LinkIt 2523 HDK V11 User's Guide Link It Users

LinkIt_2523_HDK_Users_Guide

LinkIt_2523_HDK_Users_Guide

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LinkIt 2523 HDK v11 User's Guide
Version:

1.1

Release date:

4 November 2016

© 2015 - 2016 MediaTek Inc.
This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s). MediaTek cannot grant you
permission for any material that is owned by third parties. You may only use or reproduce this document if you have agreed to and been
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CLAIMS RELATING TO OR ARISING OUT OF THIS DOCUMENT OR ANY USE OR INABILITY TO USE THEREOF. Specifications contained herein are
subject to change without notice.

LinkIt 2523 HDK v11 User's Guide

Document Revision History
Revision

Date

Description

1.0

2 September 2016

Initial release. This document is for LinkIt 2523 HDK v11.

1.1

4 November 2016

•

Updated introduction to include top and bottom views of the
LinkIt 2523 HDK v11.

•
•

Updated the section for Bluetooth and Bluetooth Low Energy.
Updated the schematic and the BOM list.

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LinkIt 2523 HDK v11 User's Guide

Table of contents
1.

Introduction ........................................................................................................................................ 1

2.

Get Started with the HDK .................................................................................................................... 3
2.1.
2.2.

Installing the LinkIt 2523 HDK drivers on Microsoft Windows ........................................................... 3
Downloading the project image using the LinkIt 2523 HDK as a removable storage ......................... 6

3.

Hardware Description ......................................................................................................................... 7

4.

Hardware Configuration .................................................................................................................... 10
4.1.
4.2.
4.3.
4.4.
4.5.
4.6.
4.7.
4.8.
4.9.
4.10.
4.11.
4.12.
4.13.
4.14.
4.15.
4.16.

Microcontroller unit ......................................................................................................................... 10
Power................................................................................................................................................ 10
Jumpers ............................................................................................................................................ 16
LEDs .................................................................................................................................................. 18
Buttons ............................................................................................................................................. 20
GPIO .................................................................................................................................................. 21
LCM ................................................................................................................................................... 22
Audio ................................................................................................................................................ 25
Speech .............................................................................................................................................. 25
MSDC ................................................................................................................................................ 25
Camera ............................................................................................................................................. 27
USB ................................................................................................................................................... 29
GNSS (LinkIt 2523G only) .................................................................................................................. 30
Bluetooth and Bluetooth Low Energy............................................................................................... 30
Debugging ......................................................................................................................................... 32
Connectors........................................................................................................................................ 34

5.

Schematics (V11) ............................................................................................................................... 49

6.

Layout (V11)...................................................................................................................................... 71

7.

LinkIt 2523 HDK’s BOM (V11) ............................................................................................................ 75

8.

Appendix A: Acronyms and Abbreviations ......................................................................................... 82

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LinkIt 2523 HDK v11 User's Guide

Lists of tables and figures
Table 1. Power input jumpers ............................................................................................................................... 10
Table 2. GPIO voltage level customization with jumper and pin (illustrated) settings .........................................11
Table 3. Enabling the active GPS antenna on HDK with jumper pin settings (illustrated) ....................................13
Table 4. PSRAM power source selection jumpers................................................................................................. 14
Table 5. Serial flash I/O power source selection jumper ...................................................................................... 15
Table 6. Analog I/O power source selection jumper............................................................................................. 15
Table 7. LinkIt 2523 HDK jumper index ................................................................................................................. 16
Table 8. The LED indicators ................................................................................................................................... 18
Table 9. Buttons and corresponding keypad functionality ................................................................................... 20
Table 10. LinkIt 2523 board’s eFuse jumper pin settings (illustrated) .................................................................. 22
Table 11. LinkIt 2523 board’s RTC jumper pin settings ......................................................................................... 22
Table 12. LCM backlight source selection settings (illustrated) ............................................................................ 23
Table 13. LinkIt 2523 HDK display peripheral jumper pin settings (illustrated) .................................................... 24
Table 14. Jumper settings (illustrated) for storage options .................................................................................. 25
Table 15. Jumper pin settings (illustrated) for camera and sensor daughterboards ............................................ 28
Table 16. Jumper pin settings (illustrated) for Bluetooth ..................................................................................... 31
Table 17. Resistor selections ................................................................................................................................. 33
Table 18. Battery connector CON2101 (see Figure 18) ......................................................................................... 34
Table 19. Micro-SD tray ........................................................................................................................................ 35
Table 20. OMTP Audio jack connector .................................................................................................................. 35
Table 21. LCM serial display daughterboard connector ....................................................................................... 36
Table 22. Serial camera daughterboard connector CON6201 .............................................................................. 37
Table 23. Sensor daughterboard connector CON6301 ......................................................................................... 38
Table 24.The HDK’s high speed USB 2.0 connector .............................................................................................. 39
Table 25. CMSIS-DAP USB full speed connector ................................................................................................... 40
Table 26. MK20 JTAG connector pin definition..................................................................................................... 41
Table 27. eMMC/micro SD jumpers ...................................................................................................................... 41
Table 28. JTAG connector CON9002 ..................................................................................................................... 41
Table 29. GPIO pin functionalities ......................................................................................................................... 43
Table 30. LinkIt 2523 HDK bill of materials ........................................................................................................... 75
Table 31. Acronyms and abbreviations ................................................................................................................. 82
Figure 1. Top view of the LinkIt 2523 HDK v11 ....................................................................................................... 1
Figure 2. Bottom view of the LinkIt 2523 HDK v11 ................................................................................................. 2
Figure 3. USB connectors on the LinkIt 2523 development board ......................................................................... 3
Figure 4. Device COM port for debugging on your PC ............................................................................................ 4
Figure 5. Device COM port for logging on your PC ................................................................................................. 5
Figure 6. A typical USB to UART converter.............................................................................................................. 5
Figure 7. LinkIt 2523 HDK connected as removable disk storage ........................................................................... 6
Figure 8. LinkIt 2523 HDK’s top view....................................................................................................................... 8
Figure 9. LinkIt 2523 HDK’s bottom view ................................................................................................................ 9
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LinkIt 2523 HDK v11 User's Guide
Figure 10. The positions of jumpers J1105, J1110 to J1112. J1114, resistors R4101, R1113, GPDAC test point TP1101
and micro SD cardholder ...................................................................................................................................... 12
Figure 11. The jumper positions for J5201 and J5202, J1106, J1108, J1109 ......................................................... 14
Figure 12. LED positions for LED2001, LED2003 and LED6601 ............................................................................. 19
Figure 13. LED positions for LED9201, LED9206 and LED9209 ............................................................................. 20
Figure 14. The positions of buttons, strap pin resistors, jumpers J1102 to J1104 ................................................ 21
Figure 15. LCM display module and backlight jumper locations .......................................................................... 23
Figure 16. Jumpers J1001 to J1006 for storage options........................................................................................ 27
Figure 17. Jumper pin locations of J1007 to J1012, J1015 .................................................................................... 28
Figure 18. Positions of J1101 and Bluetooth antenna path selection from J5001 to J5004, U1101, CON2101 and
resistor R5005 ....................................................................................................................................................... 31
Figure 19. The positions of UART and I2C pin header for debugging facilitation ................................................. 34
Figure 20. Micro-SD card holder CON4101 ........................................................................................................... 35
Figure 21. Serial LCM daughterboard’s connector and I2C pull-up resistors (R1002, R1003) .............................36
Figure 22. Serial camera daughterboard CON6201 .............................................................................................. 37
Figure 23. The position of the camera daughterboard pin headers ..................................................................... 37
Figure 24. High-speed USB2.0 connector ............................................................................................................. 39
Figure 25. CMSIS-DAP USB 1.1 full speed connector ............................................................................................ 39
Figure 26. MK20 JTAG connector, sensor daughterboard connector and PSRAM power switch J1113 ..............40
Figure 27. JTAG connector CON9002 pin definition ............................................................................................. 42
Figure 28. LinkIt 2523 HDK extension connectors ................................................................................................ 43
Figure 29. Block diagram ....................................................................................................................................... 50
Figure 30. I2C ID .................................................................................................................................................... 51
Figure 31. PMU_SPEC............................................................................................................................................ 52
Figure 32. BB MT2523G BB ................................................................................................................................... 53
Figure 33. BB_MT2523G_ABB ............................................................................................................................... 54
Figure 34. POWER_COMMON_LDO ...................................................................................................................... 55
Figure 35. POWER_Charging ................................................................................................................................. 56
Figure 36. MEMORY_eMMC ................................................................................................................................. 57
Figure 37. MEMORY_SD Card ............................................................................................................................... 58
Figure 38. CONNECTIVITY_BT_MT2523G.............................................................................................................. 59
Figure 39. CONNECTIVITY_GPS_MT2523G ........................................................................................................... 60
Figure 40. PERI_Audio_IO ..................................................................................................................................... 61
Figure 41. PERI_LCD_Capacitive touch panel........................................................................................................ 62
Figure 42. PERI_CAMERA ...................................................................................................................................... 63
Figure 43. PERI_SENSOR_DTB_IO ......................................................................................................................... 64
Figure 44. PERI_USB .............................................................................................................................................. 65
Figure 45. PERI_KEY .............................................................................................................................................. 66
Figure 46. PERI_SWD............................................................................................................................................. 67
Figure 47. DEBUG_IO ............................................................................................................................................ 68
Figure 48. POWER INDICATOR .............................................................................................................................. 69
Figure 49. LCM ...................................................................................................................................................... 70
Figure 50. LinkIt 2523 HDK layout (Layer 1) .......................................................................................................... 71
Figure 51. LinkIt 2523 HDK layout (Layer 2) .......................................................................................................... 72

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LinkIt 2523 HDK v11 User's Guide
Figure 52. LinkIt 2523 HDK layout (Layer 3) .......................................................................................................... 73
Figure 53. LinkIt 2523 HDK layout (Layer 4) .......................................................................................................... 74

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Page v of v

LinkIt 2523 HDK v11 User's Guide

1.

Introduction

MediaTek LinkIt™ 2523 hardware development kit (HDK) by SAC is a fully functional development platform for
RTOS for IoT and Wearable applications powered by MediaTek MT2523G, an ARM Cortex-M4 core-based
microcontroller unit (MCU). The HDK has rich connectivity features and interfaces such as SPI, I2S, PCM, UART,
ADC, PWM, JTAG and clock out generators.
The LinkIt 2523 HDK enables application development, prototyping and evaluation using sensors, Bluetooth,
Bluetooth low energy, GNSS, audio (speech, headset and speaker), MIPI, serial, camera serial interface, keypad,
battery management, micro SD and eMMC portable storage support and high speed USB 2.0. The LinkIt 2523 HDK
also has built-in antenna that is able to receive Bluetooth (compatibility with up to 4.0 and higher versions), and
GNSS (GPS, GLONASS and BeiDou) signals. In addition, the USB to serial wire debug (SWD) converter and JTAG
feature provides convenient development and debugging.
The LinkIt 2523 HDK supports OpenSDA to provide more streamlined development to debug and flash the binary
code.
This user’s guide covers MT2523G and MT2523D integrated chipsets. The functions and pin assignments from both
chipsets are identical, except the MT2523D doesn’t support GNSS communication.
The user manual guides you through the following.
•

Describing the hardware features of the LinkIt 2523 HDK.

•

Configuring the LinkIt 2523 HDK with specific pin and jumper assignments.

•

Providing the hardware schematics for more detailed configuration and reference design.

•

Listing bill of materials (BOM) for the LinkIt 2523 HDK.

Front and back views of the LinkIt 2523 HDK version 11 are presented in Figure 1 and Figure 2, respectively.

Figure 1. Top view of the LinkIt 2523 HDK v11

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LinkIt 2523 HDK v11 User's Guide

Figure 2. Bottom view of the LinkIt 2523 HDK v11

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LinkIt 2523 HDK v11 User's Guide

2.

Get Started with the HDK

This section provides details on how to configure the HDK and install the required peripheral drivers for the full
operation of the development platform.
Before commencing the application development, set the jumpers for the camera daughterboard, as shown in
Figure 3.

Jumpers for the Camera
Daughterboard

2523 USB

321

MK20 USB
System
Power

Figure 3. USB connectors on the LinkIt 2523 development board
The 2523 USB can be used for powering up the board and downloading the binary with LinkIt 2523 Flash Tool.
The MK20 USB can be used for debugging with GDB and downloading the binary using Keil IDE. To learn more
about 2523 USB COM port driver, see section 2.3, “Installing the USB driver” of MT2523 Flash Tool Users Guide.

2.1.

Installing the LinkIt 2523 HDK drivers on Microsoft Windows

Install mbed serial port driver to use the USB serial port on Windows OS for debugging:
1) Download and install the Windows serial port driver from here.
2) Connect the board to the computer through 2523 USB and the MK20 USB.
3) Open Windows Control Panel, click System and:
•

On Windows 7 and 8, click Device Manager.

•

On Windows XP, click the Hardware tab and then Device Manager.

4) In Device Manager, navigate to Ports (COM & LPT) (see Figure 4).

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LinkIt 2523 HDK v11 User's Guide
A new COM device should appear under Ports (COM & LPT), as shown in Figure 4. Note the COMx port
number of the mbed Serial Port. Use this port to send and receive data to and from the LinkIt 2523 HDK.

Figure 4. Device COM port for debugging on your PC
To install a USB to UART driver, such as prolific USB to UART converter:
1) Connect a USB to UART cable to PC, such as USB to Serial/UART Bridge Controller (Integrated crystal/OTP).
A new unknown device will be detected on Microsoft Windows system, if the device driver wasn’t setup
before.
2) Download and install the USB to UART cable driver from Prolific. After the driver is installed, unknown
device will be changed to Prolific USB-to-Serial Comm Port.
3) Open Windows Control Panel, click System.
•

On Windows 7 and 8, click Device Manager.

•

On Windows XP, click the Hardware tab and then Device Manager.

4) In Device Manager, navigate to Ports (COM & LPT) (see Figure 5). A new COM device should appear.
Note the COMx port number of the Prolific USB-to-Serial Comm Port. The COM port can now be used
to receive system logs through the UART interface on the LinkIt 2523 HDK.

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Page 4 of 82

LinkIt 2523 HDK v11 User's Guide

Figure 5. Device COM port for logging on your PC
A typical USB to UART converter is shown in Figure 6. The USB connector should be connected to the PC. The jump
wires (count of four) should be connected to the UART interface on the LinkIt 2523 HDK. Connect the black wire to
the GND, the white wire to the RX and the green wire to the TX and no need to connect the red wire. Once the
converter is connected, the system logs will display on the serial monitor tool, such as Tera Terminal. Figure 19
shows the UART port connector location.

Figure 6. A typical USB to UART converter

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LinkIt 2523 HDK v11 User's Guide
2.2.

Downloading the project image using the LinkIt 2523 HDK as a
removable storage

To update the FreeRTOS image only (example project image: iot_sdk_demo.bin) use the LinkIt 2523 HDK as a
removable disk drive according to the following steps:
1) Connect the LinkIt 2523 HDK to your PC with a micro-USB cable to the MK20 USB connector.
2) Navigate to Computer on your PC to check if a new mass storage named MT2523 is available
under Devices with Removable Storage, as shown in Figure 7.

Figure 7. LinkIt 2523 HDK connected as removable disk storage
3) Open the MT2523 removable storage, then drag and drop the project image, such as
iot_sdk_demo.bin, from the original image folder to update the image on the HDK’s flash.

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Page 6 of 82

LinkIt 2523 HDK v11 User's Guide

3.

Hardware Description

LinkIt 2523 HDK provides connections between the system on chip (SOC) and the peripherals, such as micro SD
card, eMMC, MIPI LCM, serial LCM, touch panel, serial camera, sensor daughterboard, GNSS, Bluetooth, audio
speech and high speed USB 2.0.
The top and bottom layout views (Figure 8 and Figure 9, respectively) show the positions of the peripherals on the
development board. Some of the peripheral interfaces are mutually exclusive. The eMMC and the micro SD, for
example, cannot be used at the same time, as the corresponding pins can only be assigned to one function at a
time.
The LinkIt 2523 HDK provides the following features for application development.

•

ARM Cortex-M4 core-based MT2523G microcontroller.

•

Internal 160kB SRAM and 4MB PSRAM.

•

Internal 4MB serial flash.

•

Rich interfaces.

•

Three I2Cs.

•

Four master SPIs and a slave SPI.

•

One master I2S and one slave I2S.

•

One PCM interface that supports master.

•

Four sets of UARTs. The first set of UART is directly configured through pin headers, the other three sets
are software configurable.

•

Five 12-bit ADCs.

•

Six PWMs by alternative voltage level.

•

Two SDMMCs.

•

JTAG debugging support.

•

Five sets of clock outputs.

•

Peripherals.

•

One serial camera interface supporting up to 3-bit mode image capture.

•

Two display modes supporting serial interface and MIPI with the resolution of up to 320*320 pixels.

•

Keypad supported to simulate buttons, such as volume up or down, backward and enter.

•

Onboard speaker, onboard analog microphone and audio jack appliance.

•

User-friendly customization.

•

Supports Bluetooth (2.4GHz) and GNSS onboard antenna connectivity and an SMA connector for
dedicated antenna connectivity.

•

Supports 2-wire SWD interface for debugging purposes.

•

Headers for convenient and accurate current measurement.

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Page 7 of 82

LinkIt 2523 HDK v11 User's Guide
BT SMA
(SMA 5002)

R9023

Analog
Microphone
(MIC6001)

Analog Jack

GNSS/BT SMA
(SMA 5001)

Figure 8. LinkIt 2523 HDK’s top view

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Page 8 of 82

LinkIt 2523 HDK v11 User's Guide

R9017 to R9021

GNSS RTC
Battery

2523 JTAG (CON9002)
Connector

Speaker with
Housing

R4005

Figure 9. LinkIt 2523 HDK’s bottom view
For more details on the HDK schematics see chapter 5, “Schematics”.

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Page 9 of 82

LinkIt 2523 HDK v11 User's Guide

4.

Hardware Configuration

4.1.

Microcontroller unit

The LinkIt 2523 HDK is powered by MediaTek MT2523G SOC, designed for IoT applications and equipped with
flexible pin assignments for custom applications.
MT2523G SOC is an ARM Cortex-M4 core-based architecture with built-in Bluetooth and Bluetooth Low Energy
connectivity support, GNSS, audio interface, internal PSRAM and flash storage. The LinkIt 2523 HDK provides
peripheral support for the I2C, SPI, UART, ADC, PWM, clock generator, audio and SDMMC interfaces.
LinkIt 2523 platform featured applications include but are not limited to industrial applications and automation,
medical signal processing applications, such as sports physiological signal recording, long term medical data
recording, home automation applications, tracking and safety applications using GNSS.

4.2.

Power

This section describes the power source options for the LinkIt 2523 HDK. The HDK can operate powered by USB or
a battery. To charge the battery, the USB cable has to be connected. The board can enter to sleep mode using the
PSRAM memory. The sleep mode can be enabled or disabled by the software.
The LinkIt 2523 HDK also enables GPIO voltage setting configuration based on the supported components. It also
can supply power to the storage, such as micro SD or eMMC. The HDK supports an active GNSS antenna that
requires a power input, see section 4.2.4, “Powering on an active GPS antenna”.

4.2.1.

Powering up with the USB

Connect a micro USB cable directly to 2523 USB or MK20 USB (see Figure 3) to supply power to the HDK. Set the
jumper J2001 (system power) to pin 1 and pin 2, to charge the battery using a USB connector. To boot up the
system without a battery, apply the jumper settings, as shown in Table 1. The jumper J2001 (system power)
location is marked in Figure 3, it’s assigned for the power rail source. The main power traces through jumper J2001
to the system.
For the battery criteria of LinkIt 2523 HDK, the capacity between 30mAh to 500mAh is recommended; charging
voltage from USB connector with tolerance between 4.15V to 7V is acceptable. The LinkIt 2523 HDK also supports
powering on the battery with power key, where the system power jumper setting is the same as to charge the
battery.
Table 1. Power input jumpers
Power path switch

Set the jumper J2001 pins to assign the power source from 2523 USB connector
or MK20 USB connector, as shown below.

Set the jumper J2001 pins to get the power source from battery connector
CON2101 (see Figure 18), as shown below.

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Page 10 of 82

LinkIt 2523 HDK v11 User's Guide
4.2.2.

Power source for digital I/O

LinkIt 2523 HDK supplies power to devices with different voltage support. GPIO voltage level customization is
shown in Table 2. Jumper and resistor positions are specified in Figure 10 and Figure 11.
Table 2. GPIO voltage level customization with jumper and pin (illustrated) settings
Power rail
DVDD_VIO_A voltage

Set the jumper J1106 pins with 0Ω resistor to assign the power rail DVDD_VIO_A
to VIO28, as shown below.
1

2

3

Set the jumper J1106 pins with 0Ω resistor to assign the power rail DVDD_VIO_A
to VIO18, as shown below.
1

Power rail
DVDD_VIO_C voltage

2

3

Set the jumper J1108 pins with 0Ω resistor to assign the power rail DVDD_VIO_C
to VIO28, as shown below.
1

2

3

Set the jumper J1108 pins with 0Ω resistor to assign the power rail DVDD_VIO_C
to VIO18, as shown below.
1

Power rail
DVDD_GPO voltage

2

3

Set the jumper J1109 pins with 0Ω resistor to assign the power rail DVDD_GPO to
VIO28, as shown below.
1

2

3

Set the jumper J1109 pins with 0Ω resistor to assign the power rail DVDD_GPO to
VIO18, as shown below.

Power rail
DVDD18_VIO18
voltage selection

1

2

3

1

2

3

1

2

3

Set the jumper J1110 pins with 0Ω resistor to assign the power
rail DVDD18_VIO18 to VIO28, as shown below.

Set the jumper J1110 pins with 0Ω resistor to assign the power
rail DVDD18_VIO18 to VIO18, as shown below.

Power rail

Set the jumper J1111 pins with 0Ω resistor to assign the power rail DVDD_VMC to
VIO28, as shown below.

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Page 11 of 82

LinkIt 2523 HDK v11 User's Guide
DVDD_VMC voltage

1

2

3

Set the jumper J1111 pins with 0Ω resistor to assign the power rail DVDD_VMC to
VIO18, as shown below.
1

2

3

Remove the jumper J1111 with 0Ω resistor to select the power rail DVDD_VMC
connected with VMC while the 0Ω resistor R1113 is mounted. Mount the 0Ω
resistors R1113 and R4101, to use micro SD storage.

J1112

3
2
1
123

TP1101
123
1
2
3

R4101

Micro SD
Cardholder

J1105
J1114

J1110

J1111
R1113

Figure 10. The positions of jumpers J1105, J1110 to J1112. J1114, resistors R4101, R1113, GPDAC test point
TP1101 and micro SD cardholder
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Page 12 of 82

LinkIt 2523 HDK v11 User's Guide
4.2.3.

Powering on the eMMC or micro SD

The LinkIt 2523 HDK supports eMMC and micro SD card for storage. The HDK operates with either eMMC or micro
SD card (see Figure 10) enabled but not both at the same time.

4.2.4.

Powering on an active GPS antenna

The active GPS antenna on LinkIt 2523 HDK can be either software controlled or hardware activated. Table 3
provides details on how to determine if the antenna is activated by direct power supply or by software control.
Adjust the jumpers J5201 and J5202 to change the settings. The jumper locations are shown in Figure 10 and
Figure 11.
Table 3. Enabling the active GPS antenna on HDK with jumper pin settings (illustrated)
Low noise amplifier
activation control
(should be synchronized
with J5202)

Set the jumper J5201 pins with 0Ω resistor to enable the active GPS
antenna using the power rail, as shown below.
1

2

3

Set the jumper J5201 pins with 0Ω resistor to enable the active GPS
antenna controlled by software settings, as shown below.
1
Active antenna power
supply (should be
synchronized with J5201)

2

3

Set the jumper J5202 pins with 0Ω resistor to supply power and enable
the active GPS antenna using the power rail, as shown below.
1

2

3

Set the jumper J5202 pins with 0Ω resistor to supply power and enable
the active GPS antenna controlled by software settings, as shown below.
1

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J1109

J1108

J5201
J5202

J1106

1
2
3
3
2
1

3
2
1
1
2
3

Figure 11. The jumper positions for J5201 and J5202, J1106, J1108, J1109

4.2.5.

The LCM backlight power source ISINK

The current sink for LCM backlight is the pin named ISINK. The current and voltage settings are configurable.
If the current sink is active, LED9209 is powered on to indicate the backlight is enabled. More details can be found
in Table 8, Figure 12 and Figure 13.

4.2.6.

PSRAM power source

The PSRAM power source can be set to either always powered on or could be controlled by user-defined settings.
Table 4 provides the jumper settings for each of the methods. The jumpers J1105 (see Figure 10) and J1113 (see
Figure 26) can be adjusted for PSRAM power source.
Table 4. PSRAM power source selection jumpers
PSRAM power supply J1105
(Should be synchronized
with J1113)

Connect the jumper J1105 pins with 0Ω resistor to set the power source
from VSWXM, as shown below.
1

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LinkIt 2523 HDK v11 User's Guide
Connect the jumper J1105 pins with 0Ω resistor to set the power source
from VIO18, as shown below.
1

PSRAM power supply J1113
(Should be synchronized
with J1105)

2

3

Connect the jumper J1113 pins to set the power source from VIO18, as
shown below.
1

2

3

Connect the jumper J1113 pins to set the power source from VSWXM, as
shown below.
1

4.2.7.

2

3

Serial flash I/O power source

Table 5 provides two different settings to power up the serial flash.
Table 5. Serial flash I/O power source selection jumper
Serial flash I/O
power supply J1112

Connect the jumper J1112 (see Figure 10) pins with 0Ω resistor to set the power
source from VIO18, as shown below.
1

2

3

Connect the jumper J1112 (see Figure 10) pins with 0Ω resistor to set the power
source from VSF, as shown below.
1

4.2.8.

2

3

Analog I/O power selection

Table 6 provides two different settings to power up the analog I/O.
Table 6. Analog I/O power source selection jumper
Analog I/O power
supply J1114

Connect the jumper J1114 (see Figure 10) pins with 0Ω resistor to set the power
source from VA28, as shown below.
1

2

3

Connect the jumper J1114 pins with 0Ω resistor to set the power source from
VIO28, as shown below.
1

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LinkIt 2523 HDK v11 User's Guide
4.3.

Jumpers

The HDK offers flexible jumper settings for customization. Table 7 summarizes the functions associated with
different jumpers.
Table 7. LinkIt 2523 HDK jumper index
Jumpers
J1001
J1002
J1003
J1004
J1005
J1006
J1007
J1008
J1009
J1010
J1011
J1012
J1015
J1101

J1102
J1103

J1104

J1105

J1106

J1108

J1109

Purpose
Storage options

Features

•
•

eMMC

Daughterboard options
of camera or sensor

•
•

Sensor daughterboard

Selection of external
buck LDO by ROM
control or system boot

•
•

Enable by VIO28

MT2523 D-die eFuse
options

•
•

Enable by VIO28

32.768kHz XTAL support
(Should be synchronized
with J1104)

•

Mount the 32.768kHz XTAL
for power saving operations

•

Unmount the 32.768kHz
XTAL for cost reduction

32.768kHz XTAL support
(Should be synchronized
with J1103)

•

Mount the 32.768kHz XTAL
needed by VIO18

•

Unmount the 32.768kHz
XTAL by VA18

Power path for PSRAM
power source (SMT
type)

•

VIO18 for PSRAM power
source

•

VSWXM for PSRAM power
source

Power path selection for
DVDD_VIO_A cluster
power source

•

VIO18 for DVDD_VIO_A
cluster I/O voltage 1.8V

•

VIO28
for DVDD_VIO_A cluster
I/O voltage 2.8V

Power path selection for
DVDD_VIO_C cluster
power source

•

VIO18 for DVDD_VIO_C
cluster I/O voltage 1.8V

•

VIO28 for DVDD_VIO_C
cluster I/O voltage 2.8V

Power path selection for

•

VIO18 for DVDD_GPO cluster

Micro SD

Camera daughterboard

Enable by EXT_PWREN

Disable by GND

© 2015 - 2016 MediaTek Inc.

Type
GPIO selection, see
section 4.10, “MSDC”.

GPIO selection, see
section 4.11, “Camera”.

Power selection, see
section 4.14, “Bluetooth
and Bluetooth Low
Energy”.
GPIO selection, see
section 4.6.1, “MT2523
digital die eFuse”.
GPIO selection, see
section 4.6.2, “RTC
source ”.
GPIO selection, see
section 4.6.2, “RTC
source ”.
Power selection, see
section 4.2.6, “PSRAM
power source”.
Power selection, see
section 4.2.2, “Power
source for digital I/O”.

Power selection, see
section 4.2.2, “Power
source for digital I/O”.
Power selection, see

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LinkIt 2523 HDK v11 User's Guide
Jumpers

J1110

J1111

J1112

J1113

J1114

J2001

J5001

J5002

J5003

J5004

Purpose
DVDD_GPO cluster
power source

Features
I/O voltage 1.8V

•

VIO28 for DVDD_GPO cluster
I/O voltage 2.8V

Power path selection for
DVDD18_VIO18 cluster
power source

•

VIO18 for DVDD18_VIO18
cluster I/O voltage 1.8V

•

VIO28 for DVDD18_VIO18
cluster I/O voltage 2.8V

Power path selection for
DVDD_VMC cluster
power source

•

VIO18 for DVDD_VMC cluster
IO voltage 1.8V

•

VIO28 for DVDD_VMC cluster
IO voltage 2.8V

Power path selection for
serial flash power source

•

VSF for internal serial flash
power source

•

VIO18 for internal serial
flash power source

Power path for PSRAM
power source (Jumper
type)

•

VIO18 for PSRAM power
source

•

VSWXM for PSRAM power
source

Power path for analog
I/O power source

•

VIO28 for analog IO power
source

•

VA28 for analog IO power
source

•

VBAT for buck power supply
to system directly

•

VBAT_CONN for battery
power supply to system,
also including battery
charging

External clock 26MHz
signal input support

•
•

Enable using VIO28

Bluetooth mode or BLE
mode selection

•

VBT for Bluetooth mode
and BLE modes

•

VIO18 for BLE mode only.

RF signal path selection
by onboard antenna or
SMA connector

•

Select onboard antenna by
connecting pin 1 and pin 2.

•

Select SMA connector
antenna by connecting pin 2
and pin 3.

Bluetooth mode
selection or external
buck cost reduction

•

VBT for both of Bluetooth
mode and BLE mode

•

VIO18 for external buck
LDO cost reduction

Power path selection

Disable using GND

© 2015 - 2016 MediaTek Inc.

Type
section 4.2.2, “Power
source for digital I/O”.
Power selection, see
section 4.2.2, “Power
source for digital I/O”.
Power selection, see
section 4.2.2, “Power
source for digital I/O”.
Power selection, see
section 4.2.7, “Serial
flash I/O power source”.
Power selection, see
section 4.2.6, “PSRAM
power source selection
jumpers”.
Power selection, see
section 4.2.8, “Analog
I/O power selection”.
GPIO selection, see
section 4.2.1, “Powering
up with the USB”.

GPIO selection, see
section 4.14, “Bluetooth
and Bluetooth Low
Energy”.
Power selection, see
section 4.14, “Bluetooth
and Bluetooth Low
Energy”.
GPIO selection, see
section 4.14, “Bluetooth
and Bluetooth Low
Energy”.
Power selection, see
section 4.14, “Bluetooth
and Bluetooth Low
Energy”.

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LinkIt 2523 HDK v11 User's Guide
Jumpers

Purpose

Features

Type

J5201

Active GPS antenna
control

•

Controlled by power
rail GPS_VTCXO_SW

•

Software control by net TX2

•

Controlled by power
rail GPS_VTCXO_SW

•

Software control by
external buck LDO

Power selection, see
section 4.2.4, “Powering
on an active GPS
antenna”.
Power selection, see
section 4.2.4, “Powering
on an active GPS
antenna”.

Display output by serial
jumpers or high speed
connector

•

Select serial pin header by
connecting pin 2 and pin 3.

•

Select MIPI display LCM
connecting pin 1 and pin 2.

Switch of JTAG interface
enable/disable on
keypad and camera
clusters

•

Select JTAG interface enable
on keypad cluster if R9002
and R9007 are mounted.

•

Select JTAG interface on
camera cluster is enabled if
R9001 and R9007 are
mounted.

J5202

Active GPS antenna
power source

J6101
J6102
J6103
J6104
J6105
J6106
R9001
R9002
R9007
R9008
Disable JTAG
interface when
R9002 and R9008
are mounted

4.4.

GPIO selection, see
section 4.7, “LCM”.

Strap pin selection, see
section 4.15,
“Debugging”.

LEDs

The LED indicators (see Figure 12 and Figure 13) on the HDK are listed in Table 8.
Table 8. The LED indicators
USB power source
indicator

LED2001 indicates if the power is supplied to both LinkIt 2523 HDK and CMSISDAP using USB connectors.

Buck power
indicator
CMSIS-DAP power
indicator
eMMC/micro SD
power indicator
Core power
indicator

LED2003 indicates if the power source is from the USB cable and the buck is
enabled.

Display current sink
indicator

The only amber indicator LED9209 indicates if the backlight of the display panel is
on.

LED6601 indicates if the CMSIS-DAP power is on. This LED is not mounted on the
HDK v1.1. It can be soldered, if necessary.
LED9201 indicates if the micro SD or eMMC power rail is enabled.
LED9206 indicates if the main power rail for LinkIt 2523 HDK core operates
successfully.

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LinkIt 2523 HDK v11 User's Guide

LED2001

LED6601

LED2003

Figure 12. LED positions for LED2001, LED2003 and LED6601

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LinkIt 2523 HDK v11 User's Guide

LED9206

LED9201

LED9209

Figure 13. LED positions for LED9201, LED9206 and LED9209

4.5.

Buttons

The LinkIt 2523 HDK has four buttons that could support keypad functionality. To improve the pin usage on the
development board, the buttons could be designed with double key feature, as shown in Table 9.
The JTAG debug feature is assigned to the same set of pins as the buttons on the HDK. The pins are SW6502,
SW6503, SW6504 and SW6505 and they will be disabled when JTAG feature is enabled using one of the resistors
R9001 and R9007. The pin locations are shown in Figure 14.
To enable button or keypad functions on the HDK:

•

Remove 10kΩ resistor from R9001.

•

Mount 10kΩ resistor to R9002.

•

Set GPIO 18, GPIO 20 and GPIO 22 to keypad function using the Easy PinMux Tool (EPT).
Table 9. Buttons and corresponding keypad functionality

System reset
Power on

Volume up
Volume down
Enter

Push Reset to reset the HDK.
Push PWR key to power on the HDK with a battery. There is no need to press this
button, if the system is powered on with a USB cable as it will automatically turn
on.
SW6502 button is assigned to control the volume up function.
SW6503 button is assigned to control the volume down function.
SW6504 button is assigned to simulate ENTER key similar to the keypad.

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LinkIt 2523 HDK v11 User's Guide
Back

SW6505 button is assigned to simulate BACK key similar to the keypad.

Left to right
R9009, R9010
R9007, R9008

Left to right
SW6502, SW6503
SW6504, SW6505

Top to bottom
J6102
J6105
J6106
J6103
J6104
J6101

321

321

Left to right
R9002, R9001
R9005, R9006
Reset

J1104 J1102 J1103

Power Key

Figure 14. The positions of buttons, strap pin resistors, jumpers J1102 to J1104

4.6.

GPIO

LinkIt 2523 GPIOs provide the following internal states: digital high and digital low, input and output. The pin
configuration is stored under project\mt2523_hdk\template\ept_config folder and the Easy PinMux Tool
is under PC_tool_Win folder. To learn more about the software registers and GPIO functionality, refer to the
LinkIt 2523 API Reference Manual.
MT2523 digital die eFuse, MT2523 real-time clock (RTC) source selection and pins assigned for user applications
are GPIO features that could be customized in user-defined applications.

4.6.1.

MT2523 digital die eFuse

The MT2523 digital die eFuse function can be enabled to protect the binary image stored on the HDK, as shown
in
Table 10 and Figure 14.

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LinkIt 2523 HDK v11 User's Guide

Table 10. LinkIt 2523 board’s eFuse jumper pin settings (illustrated)
Enable or disable
eFuse

Set the jumper J1102 with 0Ω resistor to GND to disable the eFuse setting on the
HDK, as shown below.
1

2

3

Set the jumper J1102 with 0Ω resistor to power rail VIO28 to enable the eFuse
setting on the HDK, as shown below.
1

4.6.2.

2

3

RTC source

The RTC source can be provided using either an internal or an external clock. Connect the jumper J1103 pin 2 and
pin 3 to provide 32.786kHz internal clock signal for BOM cost saving setting. Connect jumper J1103 pin 1 and pin 2
to select the clock source generated by external XTAL or built-in oscillator. Jumper J1104 should be synchronized
with the jumper J1103.
Set the jumper J1104 pins 1 and pin 2 to apply power saving mode, if 32.768kHz XTAL is mounted. Connect jumper
J1104 pins 2 and pin 3 for XTAL cost reduction. Table 11 provides details on how to configure the RTC jumper
settings for the HDK. The pin, jumper and resistor locations can be found in Figure 14.
Table 11. LinkIt 2523 board’s RTC jumper pin settings
Enable or disable
32.768kHz XTAL

Set the jumpers J1103 and J1104 with 0Ω resistors to supply 32.768kHz clock by
XTAL, as shown below.

Set the jumpers J1103 and J1104 with 0Ω resistors to supply 32.768kHz internal
clock, as shown below.

4.6.3.

Pins reserved for user-defined applications

The camera and sensor daughterboard pin headers can be configured in user-defined applications. In addition,
LinkIt 2523 HDK provides two sets of two-pin header jumpers for I2C, UART, EINT and GPIO pins that are software
configurable using the EPT (see Figure 19). Pin assignment tables to implement multi-mode selections can be
found in sections 4.16.1, “UART ” and 4.16.2, “I2C ”.

4.7.

LCM

The LinkIt 2523 HDK supports two types of display topology: MIPI DSI and serial. The MIPI interface provides a
maximum resolution of display of up to 320*320 pixels and it’s a hyper RGB 1.63 inch AMOLED display. The serial

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LinkIt 2523 HDK v11 User's Guide
interface is a 240*240 pixel graphical RGB 1.6 inch thin film transistor LCD. The connector CON6102 on the HDK is
reserved for the serial display LCM.
The HDK supports only one display LCM at a time. The capacitive touch screen is enabled on both displays.
The onboard MIPI LCM or CON6102 supports touch panel connected to the I2C interface. The pin definition of the
connectors can be found in Table 13, with the path selection resistor locations shown in Figure 14. Resistors J6101
to J6106 are designed for onboard LCM and serial pin header switching. Table 13 presents jumper settings for
different use case scenarios.
For MIPI LCM display, users should connect the connectors CON501 and CON502 (located behind CON501 on the
back of the board) for touch and display functions; for serial display, the set of CON401 and CON402 should be
used.
Jumpers J401 and J402 enable the current sink, and jumpers J201, J202, J203 are reserved for external current sink
IC to power up the serial display backlight. Only one type of backlight source is needed at a time. All descriptions of
backlight source jumpers and path selections are shown in Table 12.

CON501
CON401
Left: J402
Right: J401

J201

CON402

Up: J203
Down: J202
Figure 15. LCM display module and backlight jumper locations
Table 12. LCM backlight source selection settings (illustrated)
LCM backlight boost
source

Set the jumpers J201, J202 and J203 to activate the external current sink IC for
backlight. Remove the jumpers J401 and J402.

Remove the jumpers J201, J202 and J203 to deactivate current IC and set
jumpers J401 and J402 for backlight source through the current sink path.

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LinkIt 2523 HDK v11 User's Guide

LCM current sink source

Set the jumpers J401, J402 to activate the current sink and remove jumpers
J201, J202 and J203 to disable the external current sink IC.

Remove the jumpers J401, J402 to deactivate the current sink and set jumpers
J201, J202 and J203 to activate the external current sink IC.

Table 13. LinkIt 2523 HDK display peripheral jumper pin settings (illustrated)
LCM display reset

Set the jumper J6101 with 0Ω resistor to connect the LCM reset signal to
onboard LCM, as shown below.
1

2

3

Set the jumper J6101 with 0Ω resistor to connect the LCM reset signal to serial
pin header, as shown below.
1

LCM display chip select

2

3

2

3

Set the jumper J6102 with 0Ω resistor to connect the LCM SCE signal to
onboard LCM, as shown below.
1

Set the jumper J6102 with 0Ω resistor to connect the LCM SCE signal to
serial pin header, as shown below.
1

LCM display clock

2

3

2

3

Set the jumper J6103 with 0Ω resistor to connect the LCM SCK signal to
onboard LCM, as shown below.
1

Set the jumper J6103 with 0Ω resistor to connect the LCM SCK signal to serial
pin header, as shown below.
1

LCM display tearing

2

3

Set the jumper J6104 with 0Ω resistor to connect the LCM PTE signal to
onboard LCM, as shown below.

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LinkIt 2523 HDK v11 User's Guide
1

2

3

Set the jumper J6104 with 0Ω resistor to connect the LCM PTE signal to serial
pin header, as shown below.
1

LCM display data

2

3

Set the jumper J6105 with 0Ω resistor to connect the LCM SDA signal to
onboard LCM, as shown below.
1

2

3

Set the jumper J6105 with 0Ω resistor to connect the LCM SDA signal to serial
pin header, as shown below.
1

LCM display address

2

3

2

3

Set the jumper J6106 with 0Ω resistor to connect the LCM SA0 signal to
onboard LCM, as shown below.
1

Set the jumper J6106 with 0Ω resistor to connect the LCM SA0 signal to serial
pin header, as shown below.
1

4.8.

2

3

Audio

The LinkIt 2523 HDK is equipped with a loud speaker to enable audio playback. To enable the speaker, configure
the GPIO45 as an output using the Easy PinMux Tool. The LinkIt 2523 HDK also supports full duplex to develop
audio receive and speak at the same time for real-time development. The HDK is using the I2S interface with
master and slave with a sampling rate of 48Hz and bit width of up to 16 bits for stereo.

4.9.

Speech

There is one analog microphone on the LinkIt 2523 HDK for audio recording. The audio jack also supports the
OMTP standard for recording. The locations of the microphone and audio jack are shown in Figure 8.

4.10.

MSDC

The LinkIt 2523 HDK supports any micro SD card of FAT32 format to read and write data. The micro-SD card plugin is detected at GPIO10 with various voltage levels. To power on the eMMC, the power rail should be connected
to the power rail VMC, which means DVDD33_VMC should be connected to VMC using R1113.
The eMMC feature is shared with micro SD card by configuring the pin jumper settings, see Table 14 and Figure 16.
Table 14. Jumper settings (illustrated) for storage options
Storage data line 0

Set the jumper J1001 pins to assign the storage data line 0 to micro SD, as shown

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LinkIt 2523 HDK v11 User's Guide
below.
1

2

3

Set the jumper J1001 pins to assign the storage data line 0 to eMMC, as shown
below.
1

Storage data line 1

2

3

Set the jumper J1002 pins to assign the storage data line 1 to micro SD, as shown
below.
1

2

3

Set the jumper J1002 pins to assign the storage data line 1 to eMMC, as shown
below.
1

Storage data line 2

2

3

Set the jumper J1003 pins to assign the storage data line 2 to micro SD, as shown
below.
1

2

3

Set the jumper J1003 pins to assign the storage data line 2 to eMMC, as shown
below.
1

Storage data line 3

2

3

Set the jumper J1004 pins to assign the storage data line 3 to micro SD, as shown
below.
1

2

3

Set the jumper J1004 pins to assign the storage data line 3 to eMMC, as shown
below.
1

Storage clock line

2

3

Set the jumper J1005 pins to assign the storage clock line to micro SD, as shown
below.
1

2

3

Set the jumper J1005 pins to assign the storage clock line to eMMC, as shown
below.
1

Storage command

2

3

Set the jumper J1006 pins to assign the storage command line to micro SD, as

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LinkIt 2523 HDK v11 User's Guide
line

shown below.
1

2

3

Set the jumper J1006 pins to assign the storage command line to eMMC, as shown
below.
1

2

3

Top to Bottom
J1001
J1002
J1003
J1004
J1005
J1006

123

Figure 16. Jumpers J1001 to J1006 for storage options

4.11.

Camera

Connect the camera daughterboard (see Figure 23) to the camera connector to enable the camera. The sensor
daughterboard features are shared with camera using a jumper (see Table 15 and Figure 17). The LinkIt 2523 HDK
supports serial interface cameras.

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LinkIt 2523 HDK v11 User's Guide

321

Top to Bottom
J1010
J1008
J1007
J1011
J1015
J1012
J1009

Figure 17. Jumper pin locations of J1007 to J1012, J1015
Table 15. Jumper pin settings (illustrated) for camera and sensor daughterboards
Camera power down or
sensor daughterboard chip
select

Set the jumper J1007 to connect the sensor daughterboard using SPI chip
select, as shown below.

Set the jumper J1007 to connect camera daughterboard using camera
power down, as shown below.

Camera reset or sensor
board power down

Set the jumper J1008 to connect the sensor daughterboard using the GPIO,
as shown below.

Set the jumper J1008 to connect the camera daughterboard using the
camera reset, as shown below.

Camera data line 1 or
sensor daughterboard
data output

Set the jumper J1009 to connect the sensor daughterboard using the SPI
data output, as shown below.

Set the jumper J1009 to connect the camera daughterboard using data line

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LinkIt 2523 HDK v11 User's Guide
4.12.
US

1, as shown below.

B
Camera data line 0 or
sensor daughterboard
clock

Set the jumper J1010 to connect the sensor daughterboard using the SPI
clock, as shown below.

Set the jumper J1010 to connect the camera daughterboard using data line
0, as shown below.

Camera pixel clock input
or sensor daughterboard
data input

Set the jumper J1011 to connect the sensor daughterboard using the SPI
data input, as shown below.

Set the jumper J1011 to the camera daughterboard using pixel clock input,
as shown below.

Camera pixel clock output
or sensor daughterboard
reset

Set the jumper J1012 to connect the sensor daughterboard connection
using the GPIO, as shown below.

Set the jumper J1012 to connect the camera daughterboard using the
camera pixel clock output or data line 0, as shown below.

Camera pixel clock output
/ camera data line 2

Set the jumper J1015 to connect the camera daughterboard using the
camera pixel clock output, as shown below.
1

2

3

Set the jumper J1015 to connect the camera daughterboard using the
camera data line 2, as shown below.
1

2

3

”, as shown in Figure 3. The 2523 USB connector is used to flash the board with the LinkIt 2523 Flash Tool.

LinkI
t
2523
HDK
has
two
USB
conn
ector
s, 25
23
USB
see
secti
on
4.16.
10,
“USB
2.0
high
spee
d
conn
ector”
and
MK
20
USB
see
secti
on
4.16.
11,
“CM
SISDAP
USB
1.1
full
spee
d
conn
ector

The MK20 USB is for CMSIS-DAP USB and serial port communication and setting up the board as a mass storage
device. The CMSIS-DAP is the debugging user interface for embedded devices. The mass storage is for flashing the
LinkIt 2523 using the SWD interface. The user can drag and drop the LinkIt 2523 binary file and the FreeRTOS

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Page 29 of 82

LinkIt 2523 HDK v11 User's Guide
binary file to the HDK operating as a mass storage device to flash the image directly. The serial port also supports
UART2 connectivity on the LinkIt 2523 HDK.
The maximum charging current is 1.5A at 5V DC for the LinkIt 2523 HDK’s internal charger. The USB power source
is passing through the jumper J2001 on the HDK.

4.13.

GNSS (LinkIt 2523G only)

The LinkIt 2523G HDK is equipped with multi-GNSS chip with a built-in multiband onboard antenna with an
operating range of 1.5GHz-2.4GHz. Set the jumper J5003 to receive Bluetooth, Bluetooth Low Energy and GNSS
signal by an onboard antenna or SMA connector. It’s convenient to use the onboard antenna for direct line of sight
signals, where the environment conditions are clear for satellite visibility and location estimation. It’s
recommended to use the passive onboard antenna for the satellite signals with signal-noise-ratio (SNR) greater
than 40dB. If users would like to validate the satellite performance, please connect external antenna to the
GNSS/BT SMA header shown in Figure 8.
The HDK supports GPS, GLONASS, BeiDou, Galileo, QZSS and SBAS standards with optimized power consumption
and extended battery life. Onboard antenna and SMA connector path settings are described in section 4.14,
“Bluetooth and Bluetooth Low Energy”.

4.14.

Bluetooth and Bluetooth Low Energy

The LinkIt 2523 HDK supports Bluetooth 4.2 for Bluetooth core specification updates to provide an improved speed
and reliable data transfer. The transfer speed is up to 2.5 times faster and the protocol stack size is smaller.
Bluetooth 4.2 also consumes less power. It’s backward compatible with Bluetooth 4.0 and 4.1 and has adopted
Bluetooth core versions starting from 1.1 with Bluetooth BR/EDR.
There are three options to power up the HDK with Bluetooth, Bluetooth LE and external buck power supply. The
data transfer is through an onboard antenna or an external antenna with an SMA connector. The SMA connector
SMA5002 could be connected with an external antenna cable for Bluetooth and Bluetooth LE signal strength
validation.
Some of the jumpers are designed to switch between the RF signal and Bluetooth mode. Details on switching
between the modes are presented in Table 16 with the jumpers shown in Figure 18.

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LinkIt 2523 HDK v11 User's Guide

J5001

R5005

123

BAT CON (CON2101)
Connector

1
2
3

J1101

U1101

1
2
3

321

Left: J5004
Right: J5002

J5003

Figure 18. Positions of J1101 and Bluetooth antenna path selection from J5001 to J5004, U1101, CON2101 and
resistor R5005
Table 16. Jumper pin settings (illustrated) for Bluetooth
Bluetooth external
buck activated

Connect the jumper J1101 pin 1 and pin 2 to set the external buck U1101
enabled by power rail VIO28, as shown below.
1

2

3

Connect the jumper J1101 pin 1 and pin 2 to set the external buck U1101
enabled by ROM, as shown below.
1

Bluetooth external

2

3

Connect the jumper J5001 pins with 0Ω resistor to set the Bluetooth clock to
the clock signal generated by 26MHz XTAL, as shown below.

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LinkIt 2523 HDK v11 User's Guide
clock source

1

2

3

Connect the jumper J5001 pins with 0Ω resistor to set the Bluetooth clock to
an external clock source, as shown below.
1

Bluetooth power input

2

3

Connect the jumper J5002 pins with 0Ω resistor to set the Bluetooth main
power source to VBT, as shown below.
1

2

3

Connect the jumper J5002 pins with 0Ω resistor to set the Bluetooth main
power source to VIO18, as shown below.
1

Bluetooth antenna
path

2

3

Connect the jumper J5003 pins with 0Ω resistor to select the antenna signal
uplink and downlink paths on an onboard antenna, as shown below.

Connect the jumper J5003 pins with 0Ω resistor to select the antenna signal
uplink and downlink path using SMA connector, as shown below.

Bluetooth I/O power
input

Connect the jumper J5004 pins with 0Ω resistor to set the Bluetooth I/O power
source to VBT, as shown below.
1

2

3

Connect the jumper J5004 pins with 0Ω resistor to set the Bluetooth I/O power
source to VIO18, as shown below.
1

2

3

Mount the 0Ω resistor R5005 and disconnect the jumper J5004 with 0Ω
resistor to set the Bluetooth main power source to external buck LDO for low
power consumption.

4.15.

Debugging

To enable debugging on the LinkIt 2523 HDK, activate the JTAG interface using Easy PinMux Tool. Switch from the
camera operation mode to debugging mode using JTAG interface by replacing the output pins in a range from GPIO
24 to GPIO 28 in Easy PinMux Tool from camera function to JTAG interface. The debugging log can be captured

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LinkIt 2523 HDK v11 User's Guide
through the same jumpers, if the JTAG interface is activated. To capture logs by JTAG formal pin assignment
connector, mount 0Ω resistors on footprint R9016, R9017, R9018, R9019, R9020, R9021 and R9023, then the
connector CON9002 will be ready for JTAG signal transmission.
Resistors from R9001, R9002, R9007 and R9008 are the strap pins to adjust the feature settings, such as JTAG
debug interface output cluster, as shown in Table 17. LinkIt 2523 HDK also provides the I2C and UART pin headers
to receive system log or connect to external components directly, as shown in Figure 19. Both Figure 14 and Figure
19 provide the detailed locations of the pins.
Table 17. Resistor selections
JTAG function
activated

Mount 10kΩ resistors R9002 and R9008 to deactivate the JTAG signals.
Mount 10kΩ resistors R9001 and R9007 to activate the JTAG signals through the
GPIO pins in a range from GPIO 24 to GPIO 28 to interface the camera pin
headers.
Mount 10kΩ resistors R9001 and R9008 to activate the JTAG signals through the
GPIO of keypad cluster. Apply this setting to activate the MK20 JTAG connector.

Left to Right
I2C pins – SCL0, SDA0
UART pins – UTXD0, URXD0
GND pins – GND, GND

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LinkIt 2523 HDK v11 User's Guide
Figure 19. The positions of UART and I2C pin header for debugging facilitation

4.16.

Connectors

The LinkIt 2523 HDK supports connectors to capture a signal, plug-in an external component, update an image and
more. This section provides details and pin definitions for the connectors.

4.16.1.

UART pin header

The UART pin header is reserved for user applications that can be configured for different modes, such as UART,
GPIO and EINT (see Figure 19).

4.16.2.

I2C pin header

The I2C pin header is reserved for user applications that can be configured for different modes, such as GPIO and
I2C (see Figure 19).
Note, the pull-up resistors are needed for the I2C interface to provide the sufficient driving power to the I2C clock
and data lines. The two pull-up resistors R1003 and R1002 are already installed for the I2C interface, as shown in
Figure 21.

4.16.3.

Battery connector CON2102

The pin configuration of the battery connector CON2101 is shown in Table 18.
Table 18. Battery connector CON2101 (see Figure 18)
Pin number
1
3
5

4.16.4.

Description
VBAT
NC
GND

Pin number
2
4
6

Description
VBAT
NTC
NC

Push-Push micro SD tray CON4101

The push-push micro SD tray is able to read micro SD card directly to conveniently provide data from the storage.
Connector details are shown in Table 19. The connector location is shown in Figure 10 and the schematic view is in
Figure 20.

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LinkIt 2523 HDK v11 User's Guide
Figure 20. Micro-SD card holder CON4101
Table 19. Micro-SD tray
Pin number
1
3
5
7
9
11
13
15

4.16.5.

Description
Data 2
CMD
CLK
Data 0
GND
GND
GND
Card detect

Pin number
2
4
6
8
10
12
14

Description
Data 3
VDD
GND
Data 1
GND
GND
GND

RTC battery connector BAT5201

The coin battery connector is located at the bottom of the LinkIt 2523 HDK. The RTC saves the satellite information
even when the system is powered off, see Figure 9.

4.16.6.

OMTP standard audio connector CON6001

Audio jack pin assignment follows the OMTP standard and supports audio playback and microphone features. It
enables to record speech and playback using the Audio Jack (see Figure 8), as described in Table 20.
Table 20. OMTP Audio jack connector
Pin number
1
3
5

4.16.7.

Description
GND
Headset left
Headset plug-in detection

Pin number
2
4
6

Description
MIC
Headset right
NC

Serial display connector CON6102

CON6102 connector is mounted for external serial interface LCM daughterboard, as shown in Figure 21 and
described in Table 21. You can only operate one LCM display at a time, make sure to change the signal path by
resistors J6101 to J6106.

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LinkIt 2523 HDK v11 User's Guide

LCM Display Path Selection
J6101 to J6106

Serial LCM
(CON6102)

Up: R1002
Down: R1003
Figure 21. Serial LCM daughterboard’s connector and I2C pull-up resistors (R1002, R1003)
Table 21. LCM serial display daughterboard connector
Pin number
1
3
5
7
9
11
13
15
17
19

Description
LCM backlight current sink
LCM backlight PWM
LPTE
LSDA
LSA0
LSCK
LSCE_B
LSRSTB
VBAT
VBAT

Pin number
2
4
6
8
10
12
14
16
18
20

© 2015 - 2016 MediaTek Inc.

Description
VIO18
VIO28
VIO28
I2C_SCL
I2C_SDA
GND
Touch panel EINT
Touch panel reset pin
GND
GND

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LinkIt 2523 HDK v11 User's Guide
4.16.8.

Camera daughterboard connector CON6201

Connect the camera daughterboard to connector CON6201 (see Figure 22 and Figure 23) to capture images. The
direction of camera module is to the left, which means the camera module on daughterboard should be toward
USB connectors. The pin assignments can be customized for user-defined applications (see Table 22), if no camera
daughterboard is available.

Figure 22. Serial camera daughterboard CON6201

CON6201
1

2

13

14

Figure 23. The position of the camera daughterboard pin headers
Table 22. Serial camera daughterboard connector CON6201
Pin
number

GPI
O#

1
2

24

3

Power
domai
n
VBAT
DVDD_
VIO_A
VCAMA

4

25

DVDD_
VIO_A

5
6

29

DVDD_

Descri
ption
VBAT
CMRS
T
VCAM
A
CMPD
N
GND
CMCS

Flexible
mode1

Flexible
mode2

Flexible
mode3

Flexible
mode4

Flexible
mode5

Flexible
mode6

Flexible
mode8

GPIO

LSRSTB

CLKO

EINT

GPCOU
NTER

JTDI

MC1_D
A3

GPIO

LSCK1

DAICLK

MA_SPI
2_CS

MA_SPI
3_CS

JTMS

MC1_D
A2

GPIO

LPTE

CMCSD

EINT

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Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Flexible
mode9

SLV_SPI
0_CS

Page 37 of 82

LinkIt 2523 HDK v11 User's Guide
Pin
number

GPI
O#

7

37

8

28

9

36

10

29

11
12

27

DVDD_
VIO_A

13
14

26

DVDD_
VIO_A

4.16.9.

Power
domai
n
VIO_A
DVDD_
VIO_A
DVDD_
VIO_A
DVDD_
VIO_A
DVDD_
VIO_A

Descri
ption
K
I2C_S
DA0
CMMC
LK
I2C_SC
L0
CMCS
D2
GND
CMCS
D1
GND
CMCS
D0

Flexible
mode1

Flexible
mode2

GPIO

GPIO

I2C_SDA
1
LSA0DA
1
I2C_SCL
1
LPTE

GPIO

GPIO

Flexible
mode3

Flexible
mode4

Flexible
mode5

Flexible
mode6

Flexible
mode8

Flexible
mode9

DAISYN
C

MA_SPI
2_MISO

MA_SPI
3_MISO

JTDO

MC1_D
A0

SLV_SPI
0_MISO

CMCSK

EINT

LSDA1

DAIPCM
OUT

MA_SPI
2_MOSI

MA_SPI
3_MOSI

JTRSTB

MC1_CK

SLV_SPI
0_MOSI

LSCE_B1

DAIPCM
IN

MA_SPI
2_SCK

MA_SPI
3_SCK

JTCK

MC1_C
M0

SLV_SPI
0_SCK

2

GPIO
GPIO

Sensor daughterboard connector CON6301

Connect the sensor daughterboard to CON6301. The pin assignments can be customized in user-defined
applications, if sensor daughterboard is unplugged, as described in Table 23 and Figure 26.
Table 23. Sensor daughterboard connector CON6301
Pin
number

GPI
O#

1
2
3
4
5
6
7

37

8

28

9

36

10

27

11
12

26

13

48

14

25

15

4

16
17

5

18

7

Power
domain

Descript
ion

VBAT
VA28
VIO28
VIO18

VBAT
VA28
VIO28
VIO18
GND
GND
I2C_SDA
0
MA_SPI
3_MISO
I2C_SCL
0
MA_SPI
3_MOSI
GND
MA_SPI
3_SCK
MA_SPI
3_CS1
MA_SPI
3_CS0
EINT

DVDD_
VIO_A
DVDD_
VIO_A
DVDD_
VIO_A
DVDD_
VIO_A
DVDD_
VIO_A
DVDD_
GPO
DVDD_
VIO_A
DVDD_
VIO_A
DVDD_
VIO_A
DVDD_
VIO_A

Flexibl
e
mode
1

Flexible
mode2

Flexible
mode3

Flexible
mode4

Flexible
mode5

Flexible
mode6

Flexible
mode8

Flexible
mode9

GPIO

EINT

CMMC
LK
GPIO

GPIO

CMCS
D1

GPIO

MC1_D
A3
LSA0DA
1
MC1_D
A2
LSDA1

DAISYN
C

MA_SPI
2_MISO

JTDO

MC1_D
A0

SLV_SPI
0_MISO

DAIPCM
OUT

MA_SPI
2_MOSI

JTRSTB

MC1_CK

SLV_SPI
0_MOSI

CMCS
D0
GPO

GPIO

LSCE_B1

DAIPCM
IN

MA_SPI
2_SCK

JTCK

MC1_C
M0

SLV_SPI
0_SCK

CMPD
N
GPIO

GPIO

LSCK1

DAICLK

JTMS

MC1_D
A2

SLV_SPI
0_CS

URXD1

MC1_CK

MA_SPI
0_CS

MA_SPI
2_CS
SLA_ED
IDO

GND
EINT

GPIO

UTXD1

GPIO

UTXD2

MC1_C
M0
MC1_D
A1

MA_SPI
0_SCK
MA_SPI
0_MISO

SLA_ED
IDI
SLA_ED
ICK

EINT

EINT

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LinkIt 2523 HDK v11 User's Guide
Pin
number

GPI
O#

Power
domain

Descript
ion

19

6

EINT

20

29

21

13

22

24

DVDD_
VIO_A
DVDD_
VIO_A
DVDD_
VIO_C
DVDD_
VIO_A

23
24

EINT
SEN_32
K_BB
GPIO

Flexibl
e
mode
1
GPIO

Flexible
mode2

Flexible
mode3

Flexible
mode4

Flexible
mode5

URXD2

MA_SPI
0_MOSI
CMCSD
2
MA_EDI
WS
UTXD2

SLA_ED
IWS
MC1_D
A1
MA_SPI
1_MOSI
BT_BUC
K_EN_H
W

CMCS
K
GPIO

GPIO

MC1_D
A0
LPTE

EINT

CLKO

EINT

MC1_D
A1

SLA_EDI
CK

Flexible
mode6

BT_RGPI
O2
PWM2

Flexible
mode8

Flexible
mode9

SLA_EDI
WS

MA_SPI
0_MISO

GND
GND

4.16.10. USB 2.0 high speed connector
The 2523 USB connector (see Figure 3 and Figure 24) follows USB 2.0 high-speed standard to communicate with
other compatible devices. It’s used for charging and system power supply. The 5V power rail is also connected
with MK20 USB. The connector pins are described in Table 24.

Figure 24. High-speed USB2.0 connector
Table 24.The HDK’s high speed USB 2.0 connector
Pin number
1
3
5

Description
VUSB_BB
D+
GND

Pin number
2
4
-

Description
DNC
-

4.16.11. CMSIS-DAP USB 1.1 full speed connector
Apply the MK20 USB connector (see Figure 25 and Figure 26) to update the binary on the HDK using CMSIS-DAP
without other tools. The HDK operates as a removable mass storage, if the MK20 USB is used for connecting the
device to the PC.

Figure 25. CMSIS-DAP USB 1.1 full speed connector
The connector pin details are described in Table 25.

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LinkIt 2523 HDK v11 User's Guide
Table 25. CMSIS-DAP USB full speed connector
Pin number
1
3
5

Description
VUSB_DAP
D+
GND

Pin number
2
4
-

Description
DNC
-

4.16.12. MK20 JTAG connector
MK20 JTAG connector is used to provide a factory update of the MK20 bootloader (see Figure 26 and
Table 26). No further modification can be applied.

MK20 JTAG

123

J1113
Sensor
Figure 26. MK20 JTAG connector, sensor daughterboard connector and PSRAM power switch J1113
The connector pin details are described in

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LinkIt 2523 HDK v11 User's Guide
Table 26.

Table 26. MK20 JTAG connector pin definition
Pin number
1
3
5
7
9
11
13
15
17
19

Description
VIO28
SDA_JTAG_TRST
SDA_JTAG_TDI
SDA_JTAG_TMS
SDA_JTAG_TCLK
SDA_JTAG_TDO
-

Pin number
2
4
6
8
10
12
14
16
18
20

Description
VIO28
GND
GND
GND
GND
GND
GND
GND
GND
GND

4.16.13. eMMC / micro SD holder jumpers
There are six jumpers (J1001 to J1006) (see Figure 16) dedicated for eMMC or micro SD card, as shown in Table 27.
If the assigned jumpers are idle, they can be customized for other applications. Use only the middle pin of those
jumpers. The pins are sorted from up to down starting from 1 to 6.
Table 27. eMMC/micro SD jumpers
Pin
order
from
upside
1

GPI
O#

Descr
iption

Flexible
mode0

Flexible
mode1

Flexible
mode2

Flexible
mode3

Flexible
mode4

Flexible
mode5

32

GPIO32

PWM2

DAISYNC

33

SLV_SPI0
_CS
SLV_SPI0
_SCK

EINT13

2

MCD
A0
MCD
A1

EINT14

PWM3

DAIPCMI
N

MC0_D
A0
MC0_D
A1

3

34

MCD
A2

GPIO34

SLV_SPI0
_MOSI

EINT15

PWM4

DAICLK

MC0_D
A2

4

35

MCD
A3

GPIO35

SLV_SPI0
_MISO

EINT3

PWM5

DAIPCM
OUT

MC0_D
A3

5

30

MCCK

GPIO30

SCL0

EINT11

PWM0

URXD1

6

31

MCC
M0

GPIO31

SDA0

EINT12

PWM1

UTXD1

MC0_C
K
MC0_C
M0

GPIO33

Flexible
mode6

CLKO2

Flexible
mode9

MA_SPI
3_B_CS
MA_SPI
3_B_SC
K
MA_SPI
3_B_M
OSI
MA_SPI
3_B_MI
SO
SCL2
SDA2

4.16.14. JTAG connector CON9002
The connector CON9002 provides the standard JTAG connection. CON9002 could be enabled using the resistors
R9011 to R9021 and R9023 (see Figure 9 and Figure 8).
Table 28. JTAG connector CON9002

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LinkIt 2523 HDK v11 User's Guide
Pin number
1
3
5
7
9
11
13
15
17
19

Description
DVDD_VIO_A
JTRST
JTDI
JTMS
JTCK
NC
JTDO
SYSRSTB_IN
NC
NC

Pin number
2
4
6
8
10
12
14
16
18
20

Description
DVDD_VIO_A
GND
GND
GND
GND
GND
GND
GND
GND
GND

Figure 27. JTAG connector CON9002 pin definition

4.16.15. SMA connectors
There are two SMA headers to connect to the external antennas. The GNSS/BT SMA is used to connect to
GNSS/Bluetooth antenna. The BT SMA could be connected to a Bluetooth antenna. The connectors are shown in
Figure 8. To activate the BT SMA connector, move 0Ω resistor from R5010 to R5011.

4.16.16. External component connectivity support
This section provides the detailed pin layout for sensor and daughterboard connectors and GPIO pins, see Figure
28 and Table 29.

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 42 of 82

LinkIt 2523 HDK v11 User's Guide

L1

R1

Sensor
Ref

Left

Right to Left
J1001 to J1006

Right

1

GND

GND

2

GPIO24

GPIO14

Ref

GPIO #

3

GPIO29

GPIO6

J1001

GPIO32

4

GPIO7

GPIO5

J1002

GPIO33

5

GND

GPIO4

J1003

GPIO34

6

GPIO25

GPO48

J1004

GPIO35

7

GPIO26

GND

J1005

GPIO30

8

GPIO27

GPIO36

J1006

GPIO31

9

GPIO28

GPIO37

10

GND

GND

11

VIO18

VIO28

12

VA28

VBAT

L12

CON6102
Ref

GPIO #

GPIO #

Ref

1

ISINK

VIO18

2

3

LCM_B
LPWM

VIO28

4

5

GPIO43 VIO28

6

7

GPIO41 GPIO36 8

9

GPIO42 GPIO37 10

11

GPIO40 GND

13

GPIO39 GPIO15 14

15

GPIO38 GPO47

16

17

VBAT

GND

18

19

VBAT

GND

20

R12

19

1

20

2

12

Right to Left
J1010
J1008
J1007
J1011
J1015
J1012
J1009
Ref

GPIO #

J1010

GPIO26

J1008

GPIO24

J1007

GPIO25

J1011

GPIO28

J1015

GPIO29

J1012

GPIO29

J1009

GPIO27

Figure 28. LinkIt 2523 HDK extension connectors
Table 29. GPIO pin functionalities
Pin alias

Name

Direction

Description

GPIO4

MC[1]_CK

O

MSDC clock, output

GPIO[4]

I/O

General purpose input, output

SLA_EDIDO

O

Slave I2S data output

EINT[3]

I

External interrupt

URXD[1]

I

UART receive port, input

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 43 of 82

LinkIt 2523 HDK v11 User's Guide
GPIO5

GPIO6

GPIO7

GPIO14

GPIO24

GPIO25

MA_SPI[0]_CS

O

SPI master chip select

MC[1]_CM0

O

MSDC command, output

GPIO[5]

I/O

General purpose input, output

SLA_EDIDI

I

Slave I2S data input

EINT[4]

I

External interrupt

UTXD[1]

O

UART transmit port, output

MA_SPI[0]_SCK

O

SPI master clock output

MC[1]_DA0

I/O

MSDC data input, output

GPIO[6]

I/O

General purpose input, output

SLA_EDIWS

I

Slave I2S frame clock input

EINT[5]

I

External interrupt

URXD[2]

I

UART receive port, input

MA_SPI[0]_MOSI

O

SPI master MOSI

MC[1]_DA1

I/O

MSDC data input, output

GPIO[7]

I/O

General purpose input, output

SLA_EDICK

I

Slave I2S bit clock input

EINT[6]

I

External interrupt

UTXD[2]

O

UART transmit port, output

MA_SPI[0]_MISO

I

SPI master MISO

BT_BUCK_EN_HW

O

External buck enable pin, output

EINT[12]

I

External interrupt

CLKO[4]

O

Clock output

MA_EDICK

O

Master I2S bit clock output

GPIO[14]

I/O

General purpose input, output

PWM[3]

O

Pulse width modulation in 3.3V

MA_SPI[1]_MISO

I

SPI master MISO

SLA_EDICK

I

Slave I2S bit clock output

CMRST

O

Serial camera reset, output

LSRSTB

O

Serial display reset, output

CLKO[1]

O

Clock output

GPIO[24]

I/O

General purpose input, output

EINT[9]

I

External interrupt

GPCOUNTER_0

I

General interrupt counter, input

JTDI

I

JTAG data input

MC[1]_DA3

I/O

MSDC data input, output

CMPDN

O

Serial camera power down, output

LSCK1

O

Serial display clock, output

DAICLK

O

Digital audio interface clock, output

GPIO[26]

I/O

General purpose input, output

MA_SPI[2]_CS

O

SPI master chip select

© 2015 - 2016 MediaTek Inc.

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Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 44 of 82

LinkIt 2523 HDK v11 User's Guide

GPIO26

GPIO27

GPIO28

GPIO29

GPIO30

MA_SPI[3]_CS

O

SPI master chip select

JTMS

O

JTAG mode selection, input

MC[1]_DA2

I/O

MSDC data input, output

SLV_SPI[0]_CS

I

SPI slave chip select

CMCSD0

I

Camera sensor data 0, input

LSCE_B1

O

Serial display chip select, output

DAIPCMIN

I

Digital audio interface data input

GPIO[26]

I/O

General purpose input, output

MA_SPI[2]_SCK

O

SPI master clock output

MA_SPI[3]_SCK

O

SPI master clock output

JTCK

O

JTAG clock output

MC[1]_CM0

O

MSDC command, output

SLV_SPI[0]_SCK

I

SPI slave clock input

CMCSD1

I

Camera sensor data 1, input

LSDA1

O

Serial display data, output

DAIPCMOUT

O

Digital audio interface data output

GPIO[27]

I/O

General purpose input, output

MA_SPI[2]_MOSI

O

SPI master data output

MA_SPI[3]_MOSI

O

SPI master data output

JTRSTB

O

JTAG clock reset, output

MC[1]_CK

O

MSDC clock output

SLV_SPI[0]_MOSI

I

SPI slave data input

CMMCLK

O

Camera main clock, output

LSA0DA1

O

Serial display address, output

DAISYNC

O

DAI frame synchronization output

GPIO[28]

I/O

General purpose input, output

MA_SPI[2]_MISO

I

SPI master data input

MA_SPI[3]_MISO

I

SPI master data input

JTDO

O

JTAG data output

MC[1]_DA0

I/O

MSDC data input, output

SLV_SPI[0]_MISO

O

SPI slave data output

CMCSK

I

Camera sensor clock, input

LPTE

O

Serial display tearing signal, output

CMCSD2

I

Camera sensor data 2, input

GPIO[29]

I/O

General purpose input, output

EINT[10]

I

External interrupt

MC[1]_DA1

I/O

MSDC data input, output

SCL[0]

O

I2C clock output

EINT[11]

I

External interrupt

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

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LinkIt 2523 HDK v11 User's Guide

GPIO31

GPIO32

GPIO33

GPIO34

GPIO35

URXD[1]

I

UART receive port, input

MC[0]_CK

O

MSDC clock, output

GPIO[30]

I/O

General purpose input, output

SCL[2]

O

I2C clock output

PWM[0]

O

Pulse width modulation

SDA[0]

I/O

I2C data input, output

EINT[12]

I

External interrupt

UTXD[1]

O

UART transmit port, output

MC[0]_CM0

O

MSDC command, output

GPIO[31]

I/O

General purpose input, output

SDA[2]

I/O

I2C data input, output

PWM[1]

O

Pulse width modulation

SLV_SPI[0]_CS

I

SPI slave chip select

EINT[13]

I

External interrupt

GPIO[32]

I/O

General purpose input, output

PWM[2]

O

Pulse width modulation

DAISYNC

O

DAI frame synchronization output

MC[0]_DA0

I/O

MSDC data input, output

MA_SPI[3]_CS

O

SPI master chip select

SLV_SPI0_SCK

I

SPI slave clock input

EINT[14]

I

External interrupt

GPIO[33]

I/O

General purpose input, output

PWM[3]

O

Pulse width modulation

DAIPCMIN

I

Digital audio interface data input

MC[0]_DA1

I/O

MSDC data input, output

MA_SPI[3]_SCK

O

SPI master clock output

SLV_SPI0_MOSI

I

SPI slave data input

EINT[15]

I

External interrupt

GPIO[34]

I/O

General purpose input, output

PWM[4]

O

Pulse-width-modulated output

DAICLK

O

Digital audio interface clock, output

MC[0]_DA2

I/O

MSDC data input, output

MA_SPI[3]_MOSI

O

SPI master data output

SLV_SPI0_MISO

O

SPI slave data output

EINT[3]

I

External interrupt

GPIO[35]

I/O

General purpose input, output

PWM[5]

O

Pulse-width-modulated output

DAIPCMOUT

O

Digital audio interface data output

MC[0]_DA3

I/O

MSDC data input, output

MA_SPI[3]_MISO

I

SPI master data input

© 2015 - 2016 MediaTek Inc.

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Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 46 of 82

LinkIt 2523 HDK v11 User's Guide
GPIO36

GPIO37

GPIO38

GPIO39

GPIO40

GPIO41

GPIO42

CLKO[2]

O

Clock output

SCL[0]

O

I2C clock output

GPIO[36]

I/O

General purpose input, output

SCL[1]

O

I2C clock output

SDA[0]

I/O

I2C data input, output

GPIO[37]

I/O

General purpose input, output

SDA[1]

I/O

I2C data input, output

LSRSTB

O

Serial display reset, output

CMRST

O

Serial camera reset, output

GPIO[38]

I/O

General purpose input, output

CLKO[3]

O

Clock output

SFSWP

O

Serial Flash write protect

SCL[1]

O

I2C clock output

LSCE_B0

O

Serial display chip select, output

CMCSD0

I

Camera sensor data 0, input

GPIO[39]

I/O

General purpose input, output

CLKO[4]

O

Clock output

SFSCS0

O

Serial Flash chip select 0

SCL[1]

O

I2C clock output

MA_SPI[2]_CS

O

SPI master chip select

EINT[4]

I

External interrupt

LSCK0

O

Serial display clock, output

CMPDN

O

Serial camera power down, output

GPIO[40]

I/O

General purpose input, output

SFSHOLD

O

Serial Flash data hold

MA_SPI[2]_SCK

O

SPI master clock output

LSDA0

O

Serial display data, output

CMCSD1

I

Camera sensor data 1, input

GPIO[41]

I/O

General purpose input, output

SFSCK

O

Serial Flash clock

SDA[1]

I/O

I2C data input, output

MA_SPI[2]_MOSI

O

SPI master data output

EINT[4]

I

External interrupt

LSA0DA0

O

Serial display interface address, output

LSCE1_B0

O

Serial display chip select, output

GPIO[42]

I/O

General purpose input, output

CMMCLK

O

Camera main clock, output

SFSOUT

I

Serial Flash data output

CLKO[5]

O

Clock output

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 47 of 82

LinkIt 2523 HDK v11 User's Guide
GPIO43

MA_SPI[2]_MISO

I

SPI master data input

LPTE

O

Serial display tearing signal, output

CMCSK

I

Camera sensor clock, input

GPIO[43]

I/O

General purpose input, output

CMCSD2

I

Camera sensor data 2, input

SFSIN

I

Serial Flash data input

SDA[1]

I/O

I2C data input, output

EINT[6]

I

External interrupt

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 48 of 82

LinkIt 2523 HDK v11 User's Guide

5.

Schematics (V11)
Project : MT2523
REF_SCH TOP LEVEL

MT2523G

26M_BB

XTAL

SDIO

Micro SD

UART
Connectivity ANT
SDIO

eMMC

Serial
MIPI
LCM+CTP DTB

SDIO

Display serial
interface

GPS

Bluetooth

LNA

SAW

Diplexer

BT

EINT
I2C
Camera IF

Camera DTB

CAM (Serial)

RTC

32K_BB

I2C
HSP_OUT
I2C

Sensors DTB

I2C

EINT
SPI

JTAG
Debug port

32K

UART

Audio
Speech

AU_VIN0

Class-D
SPK Amp.

SPK_OUT

Analog MIC

AU_VIN1
HP_OUT

Audio Jack

SPI

JTAG
UART
PMU

SWD

MK20DX128

UART

SWD

Charger

Reset

VBAT

Battery

BJT

VBUS
USB HS

USB HS

Micro USB

01_Block Diagram

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

MediaTek HDK MT2523G
Thursday , March 31, 2016

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Sheet

1

of

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LinkIt 2523 HDK v11 User's Guide
Figure 29. Block diagram
I2C

I2C0

Function

I2C Spec.

Rear Camera

400 Kbps

Touch IC

400 Kbps

Budgeted Timing

I2C Slave Address (7-bit mode)

Yes.

Rear camera (GC0310) I2C address: 0X21 (Write:0x42, Read:0x43)

Yes.

TP (GT9137) I2C address: 0X24 (Write:0x28, Read:0x29)

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
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02_I2C_ID_Overview

MediaTek HDK MT2523G
Thursday , March 31, 2016

Sheet

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LinkIt 2523 HDK v11 User's Guide
Figure 30. I2C ID
Vout(V)

I_max(mA)

Vcore

0.6~1.3

200

Digital LDO

Vcore

0.6~1.3

20

VBT

2.8/1.8

100

Analog LDO

VA28

2.8

150

VCAMA

2.8

150

VA18

1.8

Buck

VSF

Digital LDO

2.5
100

VIO28

2.8

150

VIO18

1.8

200

VUSB

3.3

80

VMC

1.8/2.8/3/3.3

230

VIBR

1.3/1.5/1.8/2/
2.5/2.8/3/3.3

100

VDIG18
Driver

1.86/3.0/3.3

ISINK

1.8

5
1X(96mA;48mA/0.25V)

Title
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C
Date:

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04_PMU_SPEC

MediaTek HDK MT2523G
Thursday , March 31, 2016

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LinkIt 2523 HDK v11 User's Guide
Figure 31. PMU_SPEC
Selection of CAM and sensor DTB
J1014
2

1

SDA0

MCDA0

1

2

3

Note: 10-1

[62]

CMCSK_J

[62]

CMCSD2_J

[63]

3

MCDA0_J

J1018
2

1
3

3

U303_RSTN_CONN

Note: 10-3

J1012
2

1

CMCSK

[41]

MSDC0_DAT1
MCDA1_J

3

MA_SPI3_B_MISO
[62,90]

[40]

Note 10-1:

Jumper selection for microSD or eMMC;
also flexible pin mux feature for user appliance.

Note 10-2:

R1004 should be closed to Larkspur ball out position

Note 10-3:

Jumper selection for Camera or sensor DTB;
also flexible pin mux feature for user appliance.

Note 10-4:

Dedicate pins for GPS function are fixed;
please don't change this design to other appliance.

Note 10-5:

Optional schematic for external flash

2

HEADER 2X1(W/O JMP)

[40]

[63]
2

1

CMCSK_CAM

J1001

MCDA1

UTXD0

HEADER 2X1(W/O JMP)

J1015

1

CMCSK_CAM
MSDC0_DAT0

2

URXD0 1

SCL0

HEADER 2X1(W/O JMP)

Selection of
eMMC and micro SD

Schematic design notice of "10_BB_MT2523G_BB" page.

J1013

J1011
2

1

CMMCLK_J

[41]

J1002

3

MSDC0_DAT2
MCDA2_J

[63]

[40]

3

MA_SPI3_B_SCK
[62,90]

[41]

J1010
2

1

CMCSD0_J

J1003

MCDA3

MC_RST
1

2

3

MSDC0_DAT3
MCDA3_J

[63]

[40]

[62,90]

[41]

3

MA_SPI3_B_MOSI

J1009

CMCSD1_J

KROW1
2

1

[40]
[65]

SWD_CLK_TGTMCU
KCOL0

J1004

MCCK_J

[63]

[41]

TP_EINT

R1002
R / 4.7 / K / 0402
2

N13

MCDA0

P12

MCDA1

N12

MCDA2

N11

MCDA3

N10

SYS CTL

MCCM0
MCDA0
MCDA1

SDA0

UART

D13

B10

A15

C13
GPIO_C1

GPIO_C2

GPIO_C3

GPIO_C4

D10

B13

E11
GPIO_B0

GPIO_B1

GPIO_B3

GPIO_B2

C10

GPIO_A0

MCDA2
MCDA3

GPIO_A1
GPIO_A2
GPIO_A3

[61]

LSRSTB_LCM

[61,90]

LSCK_LCM

[61]

LSDA_LCM

[61]

LSA0_LCM

R / 0 / ohm / 0402 / NC

L13
L12
L14
M15

LPTE_LCM
[61]

TCP

[61]

TCN

[61]

TDP

[61]

TDN

J5
H5
G4
F4
F3

VIO28
VSWMP

1
3

J1016

E4

2

TVRT

J4

MT2523 BB

LSRSTB
LSCK
LSDA

GPO_0

LSA0

LCM

[61]

K14

LSCE_B

GPO

LSCE_B_LCM

LPTE
TCP

TDP
TDN
AVDD28_MIPI

GPO_2
GPO_3

SYS_CTL

TVRT

USB_VRT

GND

GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND

AUXADCIN_1
AUXADCIN_2
AUXADCIN_3
AUXADCIN_4

B8

URXD0

B7

UTXD0

E14

SCL0

E13

SDA0

C18
B15
D15
D16

Note: 10-5
U305_EINT_CONN

[63,93]

U304_EINT_CONN

[63,93]

U302_EINT_CONN

[63,93]

U303_EINT_CONN

C15

MCINS

D17

EAR_EINT

L10

[60,93]

LCM_BLPWM

A6

TP_RST

B6
E3

USB_VRT

[63,93]

GPIO_A2

[63,93]

GPIO_A3

[63,93]

GPIO_A4

[41,93]

GPIO_A5

[60,93]

Note: 10-4

[90]

[61]

MA_SPI3_B_CS1

D3

[63,93]

GPIO_A1

[61,90]

GPS_HRST_B

B20

E6

[63,93]
[41,93]

GPIO_A0

USB_DM

[64]

USB_DP

[64]

[63,90]

Note: 10-2

2
R1004 1
R / 5.1 / K / 0402 / 1%

N8

UART2_RX_MK

M12

UART2_TX_MK

M8

URXD3_GPS

M11

UTXD3_GPS

L8

GPS_LDO_EN

[66]
[66]
[52]

Note: 10-4

[52]
[52]

K15
J15
H15
G15
F15
J14
H14
G14
F14
J13
H13
G13
F13
J12
H12
G12
F12
H11
G11
F11

TESTMODE

SRCLKENAI
C6

MT2523G

B2

1

R1010
R / 1.8 / K / 0402 / 1%
R0402

[60]

USB_DP

AUXADCIN_0

AVSS28_MIPI

R / 0 / ohm / 0402-3P(1-2)

2

GPO_1

USB_DM

TCN

USB

[61]

GPIO_A5

ADC

1

TP1001
NC

[61,62,63]
[61,62,63]

[11]

D14

UTXD0

GPIO_A4
K13

SCL0
SDA0

[52]

GPIO_C0

URXD0

SCL0

MCCK

I2C

MCCM0

GPIO_A

P10

GPIO_C

GPIO_B

MSDC

MCCK

E10

B16

D9

GPIO_B5

GPIO_B4

CMPDN

CAMERA

R1006

[63]
[52]

EXT_PWREN

U1000-1

SPK_AMP_PDN

R1003
R / 4.7 / K / 0402

[61]

SEN_32K_BB
GPS_32K_BB
GPS_EINT

2

A18

1

CMPDN_J

CMCSK

3

MA_SPI3_B_CS0
[62,90]

A19

[63]

[41]

J1006

J1007

B19

MCCM0_J

[40]

CMMCLK

MSDC0_CMD

B17

3

DVDD_VIO_A

Note: 10-4

[65]

2

1

CMRST_J

KCOL2

CMCSD0

2

J1008

B18

MCCM0

1

U303_PD_CONN
[62,90]

J1005

3

[66]

1

[40]

CMRST

3

MSDC0_CLK

CMCSD1

MCCK

1

2

[66]

[65,90]

SWD_DIO_TGTMCU

1

1

2

2

MCDA2

SPK_AMP_PDN

Title
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C
Date:

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This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

10_BB_MT2523G_BB

MediaTek HDK MT2523G
Thursday , March 31, 2016

Sheet

10

of

99

Page 52 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 32. BB MT2523G BB
Schematic design notice of "11_BB_MT2523G_ABB" page.
Those capacitors must be closed Larkspur ball out placement
Note 11-1:
Total capacitor value at VBAT must larger than 28.4uF for DL
without battery.
Selection of 32.768 KHz crystal mounted:
Note 11-2:
GND: 32.768 KHz crystal is existed
VRTC: 32.768 KHz crystal is not existed
This jumper could be switched for efuse function workable.
Note 11-3:
Burning eFUSE case is needed:
Pin FSOURCE_D connected to VEFUSE
No burning eFUSE case: Pin FSOURCE_D is tied to GND .
This jumper could be switched for 32.768KHz crystal mounted
Note 11-4:
VA18: 32.768KHz crystal less
VIO18: 32.768KHz crystal existed
This jumper could be switched for PSRAM power saving
Note 11-5:
VSWXM: Switch off power supply in suspend mode
VIO18: Default setting
Note 11-6: Users are able to adjust IO cluster power source by design;
Active eMMC should unmount R1113 and mount J1111.
AVSS28_ABB ball L5 and K5 connected first, then connected
Note 11-7:
to C1109 GND side by point directly which without any branch.
Note 11-8: This test point is used for DCXO calibration
C1107/C1108 mounted when 32K co-clock with GNSS function
Note 11-9: DVDD_VIO_B should be connected to 2.8V power only

VBAT IN

AU_VIN0_N

[60]

AU_VIN0_P
TP1101

C / 1 / uF / 0402 C1132
1
2

DVDD_VIO_A

D8

VIO28

M14

DVDD_VIO_C

A16

DVDD18_VSWXM

K12

DVDD_VSF

E15

DVDD33_VMC

P13

1

DVDD_VSF
DVDD33_VMC
AVDD18_DCXO

AVDD_RTC

BATSNS

L7

RESETB_OUT
PWRKEY
SY SRSTB_IN

K5

M4

L6

L5

M6
GPDAC

AVSS28_ABB

AU_HPL

AUD_VREF

AVSS28_HP

K7

N2

M2

N4

N3

K6
AU_HSP

AU_HSN

AU_HPR

AVSS28_ABB

VSF_23

VIBR

VBT_LDO

H1
E2

VMC_23

J1

VUSB33_23

F2

VBATSW

L3

VIO18_LDO

K2

VIO28_LDO

H2

VA28_LDO

K3

VA18_LDO

G1

VCAMA_LDO

K1

1

TP1104

N15
2

1

X1101

NC

2
R1139 1
R / 0 / ohm / 0402

X / 32 / KHz / SC-20S / 7pF

GND

C1108
C / 10 / pF / 0402

Note: 11-8

GND

ISINK

2
VCORE_FB R1105 1
VCORE
R / 0 / ohm / 0402 / NC
2
R1106 1
R / 0 / ohm / 0402

VDDK

L1101
2
1
PL / MBKK1608T1R0M / SMD1608
VCORE_FB
C1136
C / 2.2 / nF / 0402 / X5R

N6
P9
N9
M9

VDIG18
3
2
1
TP1105
1
R / 0 / ohm / 0402-3P(1-2)
J1102
C1130
C / 10 / uF / 0603

VIO28

3

C1110
C / 10 / uF / 0603

VIO28

1

J1111
R / 0 / ohm / 0402-3P(1-2)
2
VMC R1113 1
R / 0 / ohm / 0402 / NC

VDIG18

[61,92]

2
R1103 1
R / 0 / ohm / 0402

U6606
VTCXO / SiT1533AI-H4-D14-32768 / NC

DVDD_VIO_C
2

R / 0 / ohm / 0402-3P(1-2)
J1108
DVDD33_VMC
3
VIO18
2
1
VIO28

Note: 11-3

VIO18_LDO

C1133
C / 100 / nF / 0402 / NC

R / 0 / ohm / 0402-3P(1-2)
J1109
DVDD_VIO_A
3
2
1

VIO18

PMU LDO

2
ISINK
R1102
R / 0 / ohm / 0402

1

R / 0 / ohm / 0402-3P(1-2)
J1110
DVDD_GPO
3
2
1

VCORE

TP1103

D1

DVDD18_VIO18
2

R / 0 / ohm / 0402-3P(1-2)
J1106

VSWDP

N1

VDDK

VRTC

2
R1104 1
R / 0 / ohm / 0402
VIO18_LDO
VIO28_LDO

VIO28_LDO
VSF_23
VA28_LDO
VA18_LDO
VBT_LDO

VMC_23
VRTC

3

VIO28

VUSB33_23

J1103
R / 0 / ohm / 0402-3P(1-2)
3
2
1

1

VIO28

VIO18

VCAMA_LDO

TP1102

VIO18

VIO28

VSWMP

L2

P7

LED DRV

DVDD_IO power
source selection

VIO18

2

RTC

TP1106
1

C1107
C / 10 / pF / 0402

Note: 11-6

VSWXM

C3

VCORE

Note: 11-8

1

2

L9
M1

GND
GND
GND
GND
GND
GND
GND
GND
GND
GND

C5

C1124 1

C / 1 / uF / 0402

E1

ISENSE

XIN

PWRKEY
SY SRSTB_IN

VREF

B4

1

VDRV

K10
G9
J10
F9
H10
F8
H9
G8
G10
F10

A3

CHRLDO

AVSS_PMU
AVSS_PMU
AVSS_PMU
AVSS_PMU
AVSS_PMU
AVSS_PMU

A2

E7
E8
F7
H8
J8
J9

B1

BATSNS

BATON

RTC_XOSC32_ENB

VDRV

B5
L4

VCDT

2

Vin = 2.5V ~ 5.5V
Vout = 0.6 x (1+Ra/Rb)

P2

VDIG18

1

L1102
PL / MAKK2016T2R2M
2
1

7

AU_VIN1_P

GND_VCORE

2

THER PAD
GND

VCORE_FB

AVSS_DCXO

1.32V / 20mA (max)

U / TPS62560

VCORE_BUCK

AVSS33_USB

MT2523G

3

VCORE_LDO

MT2523 ABB

AVDD33_USB

1

FB

AU_VIN1_N

VSWDP

N16

CHRLDO

D2

2

MODE

SW

AU_VIN0_N

VSWMP

AVDD18_AUXADC
AVDD28_ABB

2

6

EN

VIO28

VA18

1

C2

2
1
C1129
C / 22 / pF / 0402
2
1
C1128
C / 10 / uF / 0603

2

Vin

VIO18

VA28

RTC_XOSC32_ENB

A4

BATON

RESETB_OUT L11

R1134
R1133
R / 360 / K / 0402 R / 430 / K / 0402
2
1
2
1

4

1

VBATSW

VCAMA

XOUT

VCDT

ISENSE

[65]

U1101
5

R1131 R / 100 / K / 0402
2
1

J1101

C1127 C / 4.7 / uF / 0603
2
1

2
R1135 1
R / 0 / ohm / 0402
3
EXT_PWREN
2
1
VIO28

P3

M5
ACCDET

DVDD_VIO_C
DVDD18_VSWXM

AVDD_BTRF_ext

VBAT

AU_VIN0_P

DVDD_VIO_B

VUSB33

FSOURCE_D

C1106
C / 1 / uF / 0402

Ext. Buck for BT AVDD13

AU_MICBIAS0

VMC

DVDD_VIO_B

P15

ISENSE

VIBR

DVDD_VIO_A

XOUT

[21]

DVDD_GPO

1

BATSNS

/ 0402
1

/ 0402
1

/ 0402
1

VDRV

[21]

C1102
C / 1 / uF
2
C1103
C / 1 / uF
2
C1134
C / 100 / nF
2
C1123
C / 1 / uF
2
C1113
C / 1 / uF
2
C1112
C / 1 / uF
2
C1125
C / 1 / uF
2

/ 0402
1

CHRLDO

[21]

VBT

System
Control

/ 0402
1

DVDD18_VSWXM

[21]

D4

DVDD18_VIO18

XIN

AVDD18_DCXO

C1135
C / 100 / nF / 0402

E9

VSF
FSOURCE_A
VSWXM

3

VBATSW

N14

VRTC

AVSS_VREF

AUDIO

VDDK

CLKOUT

BATON

C4

VBAT_VCORE

VREF
AVSS_VREF

VDDK

VRTC

VCDT

[21]

B3
M3

2

C1131
C / 1 / uF / 0402
2
1

[21]

VSWDP

C7

VBAT_BUCK_CTRL

CHARGER

VSWMP

VSWXM

AVDD18_AUXADC

VUSB33

C1109
C / 2.2 / uF / 0402
2
1

Note: 11-7

Note: 11-4

2
R1112 1
R / 0 / ohm / 0402

A8
D21

VIO28

VBAT_LDOS1

PMU LDO

DVDD_GPO

K9

VBAT_LDOS2

POWER IN

VA18
J1114
R / 0 / ohm / 0402-3P(1-2)
1
VIO28
2
3
VA28

/ 0402
1

DVDD18_VIO18

AVDD18_DCXO

J1104
R / 0 / ohm / 0402-3P(1-2)
1
VIO18
2
3
VA18

P6
H3
K11

Note: 11-9

J1112
R / 0 / ohm / 0402-3P(1-2)
1
VSF
2
3
VIO18

/ 0402
1

VDDK

Note: 11-5

J1113
CON3/SMD/P2.54/C111400/B/ACMELUX
VIO18 3
2
VSWXM 1

DVDD_VSF

VBAT_VCORE

U1000-2

2
R1118 1
R / 0 / ohm / 0402
2
R1119 1
R / 0 / ohm / 0402
2
R1120 1
R / 0 / ohm / 0402
2
R1121 1
R / 0 / ohm / 0402
2
R1122 1
R / 0 / ohm / 0402
2
R1123 1
R / 0 / ohm / 0402
2
R1124 1
R / 0 / ohm / 0402
2
R1125 1
R / 0 / ohm / 0402
1
2
R1126
R / 0 / ohm / 0402

VIO18
VIO28
VSF
VA28
VA18
VBT
VCAMA
VUSB33
VMC

Note: 11-2

VRTC

Title

4

J1105
R / 0 / ohm / 0402-3P(1-2) / NC
1
VIO18
2
3
VSWXM

L1

1

Note: 11-1

RESETB_OUT
SY SRSTB_IN R1136
R / 0 / ohm / 0402 / NC

F1

VBAT_LDOS1

VBAT_BUCK_CTRL N7

2

[66,90]

C1105 C / 2.2 / uF / 0402 / NC

2

SY SRSTB_IN

VBAT_LDOS2

VBAT IN

R1101
R / 1 / K / 0402 / NC

N5

1

ACCDET

1

[60]

[10]

Note: 11-7

VREF

1

AU_VIN1_P

[60]

2

AU_VIN1_N

[60]

C1114
C / 4.7 / uF / 0603
2
1
C1115
C / 10 / uF / 0603
2
1
C1116
C / 10 / uF / 0402
2
1
C1117
C / 2.2 / uF / 0402 / NC
2
1
C1118
C / 1 / uF / 0402
2
1
C1119
C / 2.2 / uF / 0402
2
1
C1120
C / 2.2 / uF / 0402
2
1
C1121
C / 1 / uF / 0402
2
1
C1122
C / 1 / uF / 0402
2
1

AU_HSP

[60]

C1126
2
1

VIO18

AU_HSN

[60]

C / 1 / uF / 0402

AU_MICBIAS0

AU_HPR

[60]

1

System reset button

AU_HPL

[60]

2

Note: 11-1

[60]

1

VBAT_VCORE

1

VBAT_BUCK_CTRL

2
R1117 1
R / 0 / ohm / 0402

2

VBAT_LDOS2

2
R1116 1
R / 1 / ohm / 0402

C1140
C / 2.2 / uF / 0402
2
1

VBAT_LDOS1

2
R1115 1
R / 0 / ohm / 0402

C1139
C / 2.2 / uF / 0402
2
1

2
R1114 1
R / 0 / ohm / 0402

C1137
C / 1 / uF / 0402
2
1

2 R1137
1
R / 0 / ohm / 0603

C1138
C / 1 / uF / 0402
2
1

VBAT

Size
C
Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

11_BB_MT2523_ABB

MediaTek HDK MT2523G
Friday , June 24, 2016

Sheet

11

of

99

Page 53 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 33. BB_MT2523G_ABB
Schematic design notice of "20_POWER_COMMON_LDO" page.

U2001
4

VUSB_BB

60mils

3

NC

ANODE

CATHODE
CATHODE
CATHODE
CATHODE

Note 20-1:

Users must connect CON6401 for total system power supply

Note 20-2:

External LDO are option components
Remove R1118, R1119, C1114 change to 10uF when applying external LDO

1
2
5
6
VBUS

U / SS2003M

60mils

2A FUSE

FUSE/DIP/SMD

1

F2001

R2001
R / 2.2 / K / 0402

60mils

3

ANODE

CATHODE
CATHODE
CATHODE
CATHODE

1
2
5
6

FD and Hole

1

NC

2

U2002
4

VUSB_DAP

LED2001
LED / CL190Y G

H2001

2

U / SS2003M

H2003

H2002

STAND
STAND
HOLE/PTH/R6D3.5 HOLE/PTH/R6D3.5
H2004
STAND
HOLE/PTH/R6D3.5
H2007

STAND
HOLE/PTH/R6D3.5
H2006

H2005
STAND
HOLE/PTH/R6D3.5

STAND
HOLE/PTH/R6D3.5

STAND
HOLE/PTH/R6D3.5

DC 5V supply
VBAT_CONN

U / TPD1S514-1

GND
GND
GND
GND

R2003
R / 1 / K / 0402
1
2
1

2
R2004
R / 1 / K / 0402 / NC

5
6
9

SW

PVIN
AVIN

FB

EN

PGND
MODE
AGND
THER PAD

2

AD_IN_SW 1

4

AD_IN_FB

L2001
PL / MEKK2520T1R0M
2

1
3

U / TPS62065

Vout = 0.6 x (1+Ra/Rb) = 3.96V

1

60mils

3

2

1

A4
B4
C1
C4

8
7

VBUS_SY S

2
R / 1 / K / 0603
J2001

R2018
R / 1.58 / K / 0402

1 2

EN#

A2
A3
B2

R2019

LED2003
LED / CL190Y G

2

U2004
VBUS_SY S
VBUS_SY S
VBUS_SY S

VBAT
1

AD_IN

C2005
C / 22 / uF / 0603
2
1

A1

C2002
C / 1 / uF / 0402
2
1

2
1
C2006
C / 22 / pF / 0402

2
R2002 1
R / 0 / ohm / 0402

B1

C2004
C / 10 / uF / 0603
1
2

VBUS_CON
VBUS_CON
VBUS_CON

2

C2001
C / 1 / uF / 0603 / 50V

VBUS_POWER
B3
C2
C3

C2003
C / 2.2 / uF / 0402
1
2

1

60mils

R2006
R2005
R / 91 / K / 0402 R / 510 / K / 0402
2
1
2
1

U2003

VBUS

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

20_POWER_COMMON_LDO

MediaTek HDK MT2523G
Monday , October 24, 2016

Sheet

20

of

99

Page 54 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 34. POWER_COMMON_LDO
Schematic design notice of "21_Power_Charging" page.
Note 21-1:

Note: 21-1

VCDT rating:
1.268V
VCDT

R2104
1 R / 330 / 2K / 0402 / 1%
D2101

C2101
C / 1 / uF / 0603 / 50V

[11]

R2102
1 R / 39 / K2 / 0402 / 1%

1

Note: 21-2

VBUS

1. Close to Battery Connector. (Rsense (R2103) <10mm)
2. Main path should be 40mil. (VBUS -> U2101's E,
-> U2101's C -> R2103 -> VBAT)
3. Star connection from R2103 to BAT Connector

Note 21-2:

Capacitor rating depends on Phone OVP spec.

Note 21-3:

Before you select BJT , please take power dissipation into consideration.
Refer to MT6385 design notice.

Note 21-4:

60mils from battery connector to MT2523 chip

2

D/NZ9F5V6ST5G
R2105
R / 1.5 / K / 0402
1
2

CHRLDO

[11]

Note 21-6:

E
B
D
D

1
2
3
8

60mils

Note 21-5:

Note: 21-3

VDRV

[11]

7
6
5
4

C
C
G
S

Note 21-7:
Q / PNMT6N1-LB
Q2101

4mil

1

Rsense

2
R2109 1
R / 0 / ohm / 0402
2
R2108 1
R / 0 / ohm / 0402

R2103
R / 0.1 / ohm / 0805 / 1%
R0805
2

4mil

BATTERY
CONNECTOR

Differential

ISENSE
BATSNS

L style pin header for battery sub board plug in
Based on your system level design , if better ESD performance is needed
on your system, please refer to ESD performance enhance proposal.
Please place ESD2101 closed by R1137.
Thermal protection : battery with NTC
(1) if battery NTC is 10kohm; R2106=16.9K (+/-1%)
(2) if battery NTC is 47kohm; R2106=61.9K (+/-1%)

[11]
[11]

2

VA18

Note: 21-4

R2106

1

R / 16.9 / K / 0402 / 1%

VBAT_CONN
1

1
2

R2107
NTC / NTCG103JF103FT / 0402

2

1

ESD2102
ESD / AZ5725-01F

1
2

C2102
C / 22 / uF / 0603

ESD2101
ESD / AZ5825-01F
2
1

NTC

2
R2101
R / 1 / K / 0402

BATON

[11]

Note: 21-7

Note: 21-6

BATTERY DTB
CON2101
VBAT_CONN

1
3
5

2

VBAT_CONN

4NTC
6

Note: 21-5

21_POWER_Charging

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

MediaTek HDK MT2523G
Friday , June 24, 2016

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Sheet

21

of

99

Page 55 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 35. POWER_Charging
Schematic design notice of "40_MEMORY_eMMC" page.
Note 40-1:
Note 40-2:

Please refer eMMC datasheet for the recommendation of
VCC/VCCQ/VDDI bypass capacitors values.

Note 40-3:

C4003 need to be placed near by eMMC

Note 40-4:

R4005 and R4009 must be removed when micro SD feature active
R4009 and R4010 co-layout for path selection only on one time

Note 40-5:

eMMC is an optional component

1
NC

1
NC

R4001
2
R / 10 / K / 0402 /
R4002
2
R / 10 / K / 0402 /
R4003
2
R / 10 / K / 0402 /
R4004
2
R / 10 / K / 0402 /

1
NC

VIO18

1
NC

For eMMC 5.0, connect eMMC's A6 & J5 pin to GND.
For eMMC 4.5, check eMMC's A6 & J5 is no connection (NC).

MSDC0_DAT4
MSDC0_DAT5
MSDC0_DAT6
MSDC0_DAT7

Note: 40-4

Note: 40-5

153 ball eMMC

C4003
C / 100 / nF / 0402

E7
G5
H10
K8
A6
J5

1

1

R4007
R / 0 / ohm / 0402

2

Note: 40-1

2

R4008
R / 0 / ohm / 0402

A1
A2
A8
A9
A10
A11
A12
A13
A14
B1
B7
B8
B9
B10
B11
B12
B13
B14
C1
C3
H1
H2
H3
H12
H13
H14
K1
K2
K3
K12
K13
K14
M1
M2
M3
M7
M8
M9
M10
M11
M12
M13
M14
P1
P2
P8
P9
P11
P12
P13
P14
P7
P10
K10
K7
K6
G10

2

VIO18

1
R4010 2
R / 0 / ohm / 0402

1

VIO18

C4006
C / 100 / nF / 0402

C4005
C / 4.7 / uF / 0402

Note: 40-4

2

C4002
C / 4.7 / uF / 0402

1

1
R4009 2
R / 0 / ohm / 0402 / NC

2

C4
N2
N5
P4
P6

2

Note: 40-3

1

C2

C4004
C / 100 / nF / 0402

Note: 40-2

2
1
R4006
R / 10 / K / 0402 / NC

A3
A4
A5
B2
B3
B4
B5
B6

1

1

C4001
C / 2.2 / uF / 0402

2
MSDC0_DAT4
MSDC0_DAT5
MSDC0_DAT6
MSDC0_DAT7

1

MSDC0_DAT0
MSDC0_DAT1
MSDC0_DAT2
MSDC0_DAT3

2

[10]
[10]
[10]
[10]

U4001
U / 153 eMMC / THGBMBG5D1KBAIL
E6
VCC F5
DAT0
VCC J10
DAT1
VCC K9
DAT2
VCC
DAT3
DAT4
C6
VCCQ M4
DAT5
VCCQ N4
DAT6
VCCQ P3
DAT7
VCCQ P5
VCCQ
VDDI
M5
CMD M6
VSSQ
VSSQ
CLK H5
DSL K5
VSSQ
VSSQ
RST D4
VSSQ
A1 INDEX / NC
C7
NC C8
VSS
NC C9
VSS
NC C10
VSS
NC C11
VSS
NC C12
VSS
VSS
NC C13
NC C14
NC D1
NC D2
NC D3
NC D12
NC D13
NC D14
NC E1
NC E2
NC E3
NC E12
NC
NC E13
NC
NC E14
NC
NC F1
NC
NC F2
NC
NC F3
NC
NC F12
NC
NC F13
NC
NC F14
NC
NC G1
NC
NC G2
NC
NC G12
NC
NC G13
NC
NC G14
NC
NC J1
NC
NC J2
NC
NC J3
NC
NC J12
NC
NC J13
NC
NC J14
NC
NC L1
NC
NC L2
NC
NC L3
NC
NC L12
NC
NC L13
NC
NC L14
NC
NC N1
NC
NC N3
NC
NC N6
NC
NC N7
NC
NC N8
NC
NC N9
NC
NC N10
NC
NC N11
NC
NC N12
NC
NC
NC N13
NC N14
NC
NC C5
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
A7
NC
RFU E5
RFU E8
RFU
RFU E9
RFU
RFU E10
RFU
RFU F10
RFU
RFU G3
RFU
RFU

VMC

1
R4005 2
R / 0 / ohm / 0402 / NC

MSDC0_CMD
MSDC0_CLK

MC_RST

[10]
[10]

[10]

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

40_Memory_eMMC

MediaTek HDK MT2523G
Thursday , March 31, 2016

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Page 56 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 36. MEMORY_eMMC
Schematic design notice of "41_MEMORY_SD Card" page.

VMC

2

MCCM0_J

[10]

MCCK_J

[10]

MCDA0_J

[10]

MCDA1_J

1
2
3
4

6

2

7

VCCSWP

CMD

CD

VDD

GND
GND
GND
GND
GND
GND
GND
GND

CLK
VSS
DATA0
DATA1

/ NC

/ NC

/ NC

/ NC

/ NC

K
ESD5451NKM
K
ESD5451NKM
K
ESD5451NKM
K
ESD5451NKM
K
ESD5451NKM
K
ESD5451NKM

/ NC

8

A
ESD4101
A
ESD4102
A
ESD4103
A
ESD4104
A
ESD4105
A
ESD4106

C4101
C / 1 / uF / 0402

5

SWPIO

DATA2
CD/DATA3

Note: 41-1

9
10
12

MCINS

[10,93]

11
13
14
15
16
17
18
19

K
ESD5451NKM / NC
K
ESD5451NKM / NC
K
ESD5451NKM / NC

MCDA3_J

[10]

R4101 must be removed when eMMC feature active

Note: 41-1

A
ESD4107
A
ESD4108
A
ESD4109

MCDA2_J

[10]

1

1

[10]

Note 41-2:

CON4101
CON / 12 / TA-M017-012-07-811
MICROSD/8P/SMD/TA-M017-012-07-811

Note: 41-2
R4101
R / 0 / ohm / 0402

These ESD diodes are optional for better ESD and RF de-sense performance.
(The C load of Diodes on trace should be less than 15pF)

MSDC interface

2
R4102 1
R / 10 / K / 0402 / NC
2
R4103 1
R / 10 / K / 0402 / NC
2
R4104 1
R / 10 / K / 0402 / NC

VMC

Note 41-1:

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

41_MEMORY_SD Card

MediaTek HDK MT2523G
Thursday , March 31, 2016

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

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Page 57 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 37. MEMORY_SD Card

ANT5001

ANT sprint

ANT sprint

C / NC / 0402
C5007

L5003
2
1
L / 6.8 / nH / LQG15HS6N8H02D

Note 50-1:

These capacitors should be placed near by ball out position

Note 50-2:

26MHz crystal must be placed near by Larkspur ball out position

Note 50-3:

R5002, C5003 and C5004 are reserved for BT antenna matching tuning
J5006 is set for single Bluetooth performance measurement.

C5009
C / 3.6 / pF / 0402 / GJM1555C1H3R6WB01D
SMA-1.66MM
SMA5001
1

1

R5006

50 Ohm impedence
1

R5003
R / 0 / ohm / 0402
2
1

2

3

R / 0 / ohm / 0402-3P(1-2)
J5003

2

6
5
4

1

NC
TP5001

1

NC
TP5002

C5008
C / NC / 0402

DIPX5001
GND

WiFi

ANT

GND

GND

GPS

C / 18 / pF / 0402
2
C5005 1

1

BT_ANT

50 Ohm impedence
C / 18 / pF / 0402
2
C5006 1

3

GPS_diplexer_input

50 Ohm impedence

[52]

J5001 should keep low for clock is generated by crystal;
Pull high if clock signal is injected from net XTAL1.

Note 50-5:

The impedence of traces about diplexer should be 50 ohm

Note 50-6:

R5013
R / 0 / ohm / 0402 / NC
2
1

R5012
R / 0 / ohm / 0402 / NC
2
1

2

Note 50-4:

2

DP1608-V1524CA
DIPLEXER/6P/SMD/DP1608

R / 0 / ohm / 0402
L5002
NC

2

5
4
3
2

1 2

50 Ohm impedence

1 2

Note: 50-7

Note 50-7:

J5002 connected to VBT for dual mode of Bluetooth and BLE modes
J5002 connected to VIO18 for BLE mode
J5004 connected to VBT for dual mode of Bluetooth and BLE modes
J5004 connected to VIO18 for external buck LDO cost reduction
J5005 connected to AVDD_BTRF_ext for power saving
SMA 5001 SMA5002 are optional components

26MHz crystal
X5001

Note: 50-2

1

2

Hot2

NC

GND

HOT

4

3

X / 26 / MHz / 8Q26000008

XTAL1
XTAL2

U1000-3

2
R5010 1
R / 0 / ohm / 0402
2
R5011 1
R / 0 / ohm / 0402 / NC

BT_ANT
1

2

50 Ohm impedence

SMA-1.66MM
SMA5002

1
R5002
R / 0 / ohm / 0402

2

2
3
4
5

2
R5007 1
R / 0 / ohm / 0402

1

A12

C5004
C / NC / 0402

2

AVDD13_BTRF

BT_LNA

1

AVDD_VBT

BT

A14
A13

C5003
C / NC / 0402

Note: 50-7
26M & CLK
BUFFER

XTAL2
FREF
EXT_CLK_SEL

A9

XTAL1

A10

XTAL2

C8
A11

TP5003
CLK_SEL

Note: 50-4
VIO18
J5001
R / 0 / ohm / 0402-3P(1-2)
3
2
1

DUMMY_NET

DUMMY_NET

DUMMY_NET

DUMMY_NET

DUMMY_NET

XTAL1

P5

P22

P1

A1

A22

AVSS_BT

AVSS_BT

AVSS_BT
E12

MT2523G

B12

AVSS_BT

Note: 50-6

AVSS_BT

MT2523 BT

D12

2
R5005 1
R / 0 / ohm / 0402 / NC

AVDD_VBT
AVDD13_BTRF

C12

R / 0 / ohm / 0402-3P(1-2)
J5004

AVDD_BTRF_ext

Note: 50-1

2

C11

VIO18

3

POWER IN

VBT

1

R / 0 / ohm / 0402-3P(1-2)
J5002
1
2
3

C5002
C / 100 / nF / 0402
2
1

VBT
VIO18

C5001
C / 2.2 / pF / 0402
2
1

R5009
R / 0 / ohm / 0402 / NC

1 Feed

1
Feed

1

1

1

Note: 50-5

NC
L5001

1

ANT5002

2

2

Schematic design notice of "50_CONNECTIVITY_BT_M T2523G" page.

Title

50_CONNECTIVITY_BT_MT2523G

Size
C

MediaTek HDK MT2523G

Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Thursday , March 31, 2016

Sheet

50

of

99

Page 58 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 38. CONNECTIVITY_BT_MT2523G
External buck 3.3V LDO
GNSS_VBAT
1

L21

GPS_AVDD_TCXO_SW

GPS_XTEST
GPS_EINT0
GPS_EINT1

GPS_DVSS28_IO
GPS_DVDD28_IO1
GPS_DVDD28_IO2

B22
C22

GPS_AVDD28_CLDO

GPS_DVSS28_SF

MT2523G

GPS_AVDD11_CLDO
GPS_AVSS11_CLDO

GPS_DVDD28_SF

GPS_JRCK

R5224 2

1R / 0 / ohm / 0603

2

1

1
1
TP5216
NC

N19

1

N20

1

TP5201
NC
TP5211
NC

M19

L19

GPS_SCS1_

R / 0 / ohm / 0402
2 GPS_CORE1V1
R5230 1
C5212 C / 2.2 / uF / 0402
2
1
C5213 C / 4.7 / nF / 0402
2
1

Note: 52-9

GPS_VDDIO

GPS_VTLDO_2V8
R5201
R / 0 / ohm / 0402
2
1
C5215
J21
C / 1 / uF / 0402
C / 1 / uF / 0402
2GPS_VTLDO_2V8
J20
C5216 R5232 1
1
TP5214 R / 0 / ohm / 0402
NC
1
TP5215
L17 JRCK
NC
R5203 R / 10 / K / 0402 / NC
P18 JDO
R5204 R / 10 / K / 0402 / NC
1
K16 JDI
TP5207
NC
1
G19 JCK
TP5208
NC
1
N18 JMS
TP5209
NC
1
N17 JRST
TP5210
NC

Note: 52-10

Note 52-14:Main Input Voltage Requirement and External LDOs Selection
[1] Please choose one voltage source without built-in output high-speed
discharge function and confirm the voltage drop-down curve to keep long
output voltage drop-down period.
[2] Please choose external LDOs without output high-speed discharge
function, such as Torex XC6210/XC6215/XC6221 series to keep long
output voltage drop-down period (>1ms from 2.7V to 0.5V).
The voltage drop must can't be lower than 3.1V.
Note 52-15:matching value depends on LNA selected
Note 52-16:GPS_VTCXO_SW Note for external active antenna,
GPS_VTCXO_SW is 1.8V or 2.8V base on TCXO selection.
Please ensure external active antenna is operating at this range.
Otherwise, please using external power supply.
Note 52-17:Please refer the QVL to select LNA component

Note: 52-8
R5207
R / 10 / K / 0402 / NC

R5208
R / 10 / K / 0402

Note 52-12:In order to keep good GPS clock stability,
TCXO layout please refer to MTK TCXO layout rule.
MT2523 support 16.368MHz&26MHz TCXO, please refer
the QVL to select TCXO component
Note 52-13:C5203, C5206 and L5201 are reserved for LNA matching

J17

P20

SCS1

GPS_TX2

GPS_RX2

GPS_SCK1

GPS_RX0

GPS_TX1

GPS_RX1

Note: 52-14

External buck 3.3V LDO

Note: 52-7

GNSS_VBAT

U5203
1
2

1

RTC XTAL

IO Voltage Selection
2.8V IO : R5201= 0 , R5202 = NC (IO voltage is GPS_VTLDO)
1.8V IO : R5201 = NC , R5202 = 0 (IO voltage is GPS_DCV_1V8)

Note 52-11:C5201 is close to U5201 VCC

P17

L18
1
TP5204 NC
SCK1 K17

J18

E16

G20

GPS_TX0
M16

M18

R5225
R / 0 / ohm / 0402
R5226
[10] UTXD3_GPS
R / 0 / ohm / 0402
2
1
GPS_EINT
R
/
0
/
ohm
/ 0402 R5242
[10]
1
R5209 TP5203
TP5202 NC
R / 10 / K / 0402 / NC NC
TX2
URXD3_GPS

[10]

IN1

IN2

1 R / 120 / K / 0402 / NC
X5204
1 R / 91 / K / 0402 / NC
X / FC-135 32.768KHZ 12.5pF

Note: 52-6

GPS_JRST_

G18

H20

RF clock selection
16.368MHZ TCXO : R5207 = NC , R5208 = NC
26MHZ TCXO : R5207 = NC , R5208 = 10K

Host interface selection
Note 52-10:
UART : R5203 = NC , R5204 = NC (I/F : TX0 , RX0)
SPI : R5203 = NC , R5204 = 10K
I2C : R5203 = 10K , R5204 = 10K

1

1

2

C5221
C / 22 / pF / 0402

1

GPS_JMS

2

GNSS_VBAT

GPS_XOUT

GPS_XIN
K21

1
R5210 2
R5220 2

C5222

2

GPS_32K_BB

C / 22 / pF / 0402

R / 1 / K / 0402 / NC

C5223
C / 2.2 / uF / 0402

1

TP5212
NC
TP5213
NC

2

GPS_VRTC_1V1 F21

1

C5220
C / 1 / uF / 0402

GPS_RTC_XIN

1 TP5205
NC
1 TP5206
NC

GPS_JDI
GPS_JCK

GPS_RTC_XOUT K22

GPS_AVDD43_RTC

GPS_FORCE_ON

GPS_32K_OUT

E17

D19

D20

1
2

GPS_AVDD43_DCV

A21

GPS_AVDD11_RTC

1

GPS_JDO
B21

1

M21

VTCXO voltage selection
2.8V TCXO: TLDO 2.8V : R5209 = NC
1.8V TCXO: SMPS 1.8V : R5209 = 10K

C5224
[10]

GPS_LDO_EN

C / 4.7 / uF / 0603

3

IN

OUT

5

GND
EN

VGPS_MAIN

Note 52-18:GPS HOT re-start feature
No support:
BAT5201=NC, R5211=NC, R5243=NC, R5234=0ohm
X5204=NC, C5222=NC, C5221=NC, R5210=120K, R5220=91K
Support:
BAT5201=NC, R5211=NC, R5243=0ohm, R5234=NC
X5204=NC, C5222=NC, C5221=NC, R5210=120K, R5220=91K
Support and Power optimization
BAT5201=ML621S, R5211=1K, R5243=NC, R5234=0 ohm
X5204=FC-135, C5222=22pF, C5221=22pF, R5210=NC, R5220=NC

1

D22

Note 52-9:

2

GPS_DVDD11_CORE1

Note: 52-5

VBAT

1

GPS_HRST_B

GPS_DVDD11_CORE2

GPS_AVSS43_MISC

2
R5234 1
R / 0 / ohm / 0402
2
R5243 1
R / 0 / ohm / 0402 / NC

R5211
ML621S / NC

[10]

G
G
G

Note: 52-11

GPS_AVDD28_TLDO

+
BAT5201

C / 1 / uF / 0402

J16
F17
F16
F18
G16
G17
H16
H17
C19

GPS_T1N

L22
GPS_AVDD18_CM

GPS_OSC

GPS_AVSS_RF

GPS_T1P

L20

F20

P21

N22
GPS_RFIN

GPS_VREF

Note: 52-4

Note: 52-18

Note 52-8:

C5201

BY P

C5225

4

2

1
2

GPS_AVDD43_VBAT

GPS_AVSS43_DCV
L / 1 / uH / 0806
C21
GPS_DCV
L5202
GPS_DCV
L/IND/SMD/LQM2MPN1R0NG0
GPS_DCV_FB C20
GPS_DCV_FB
R5205
R / 0 / ohm / 0402
VGPS_MAIN
R5206
MT2523G
R / 0 / ohm / 0402 / NC

GNSS_VBAT VGPS_MAIN

GPS_VTCXO_SW

C5209
C / 4.7 / nF / 0402
2
1

C / 1 / uF / 0402

1
2
VGPS_MAIN
R / 0 / ohm / 0402
C5218
R5236
C / 4.7 / uF / 0603

C5219
C / 4.7 / uF / 0603

Buck Mode : L5202 = 1uH, R5205 = 0 ohm , R5206 = NC
LDO Mode : L5202 = 0 ohm , R5205 = NC , R5206 = 0 ohm

Note 52-7:

4

1

C / 1 / uF / 0402
G21

C / 1 / uF / 0402
2
GPS_DCV_1V8 1
R / 0 / ohm / 0402 R5238
2
GPS_CORE1V1 1
R / 0 / ohm / 0402
C5217
R5237

1
2
GPS_DCV_1V8
R / 0 / ohm / 0402
R5235

Note 52-4:

Recommend to select 3V coin battery for leakage consideration.
Pin GPS_VRTC_4V3 should be provided between 2.0V to 4.3V.
GNSS_VBAT for pin GPS_VRTC_4V3 should be provided between 2.0V to 4.3V.
U5204/C5221/C5222 could be removed, R5210 = 0 ohm,
Note 52-6:
GPS_VRTC_4V3 should be kept (always alive voltage source).
Or change C5220 to 0 ohm and feed 1.1V (always alive voltage
source) into GPS_VRTC_1V1.

C5235
C / 0402 / NC

1

GPS_DCV_1V8

GPS_DVSS11_CORE
GPS_DVSS11_CORE
GPS_DVSS11_CORE
GPS_DVSS11_CORE
GPS_DVSS11_CORE
GPS_DVSS11_CORE
GPS_DVSS11_CORE
GPS_DVSS11_CORE
GPS_DVSS11_CORE

H22

1
2

C5226
2
1

2

Note: 52-3

VCC

AVSS43_DCV should be connected to C5218 GND net first,
then connect to reference GND.

2
GPS_VREF

M22

GPS_RFIN
1

C5211 C / 1 / uF / 0402
1 R5240
F22
R / 0 / ohm / 0402
1
E22
GPS_VTLDO_2V8 2
R5239
C5214
R / 0 / ohm / 0402

Note: 52-1

NC

OUT

TCXO

C5207
C / 1 / nF / 0402

C5208
C / 4.7 / nF / 0402
2
1

GPS_AVDD18_RXFE

1 R5241
R / 0 / ohm / 0402
C5210 C / 1 / uF / 0402
2
1
G22

GPS_VTCXO_SW 2

Note: 52-2

GND

TCXO / 26 / MHz

R / 0 / ohm / 0402
R5227

1
R5228 2
R / 0 / ohm / 0402

U1000-4

2

C5234
C / 0402 / NC

Note 52-3:

Note 52-5:

1 R5218 2
Carkit_input
R / 0 / ohm / 0402 / NC

TCXO5201
2
3

1

2

Note: 52-1
2

2

C / 0402 / NC

Note: 52-12

C5206
C / 1 / pF / 0402

VGPS_MAIN

R5217

2

L5201
L / 1.2 / nH / 0402

NC

C / 4.7 / uF / 0603

J5201
R / 0 / ohm / 0402-3P(1-2)
1
GPS_VTCXO_SW
2
3
TX2

1

C5203

Carkit_input

1

R / 0 / ohm / 0402 / NC
C5233

C5232
C / 0402 / NC

2

U / BGA725L6

2 GPS_DCV_1V8
1

Note: 52-13

1

GND

PON

50 Ohm

3

AO

AI

6

2
3
5

5

Note 52-2: C5214 is close to G1 ball (AVDD28_TLDO)

C5238

4

R5219
R / 0 / ohm / 0402

U5206
U / EPOCOS_B8313
1
4
IN
OUT

1

C5230
C / 0402 / NC

2

1

50 Ohm

C / 18 / pF / 0402

2
3
5

C / 18 / pF / 0402

2

G
G
G

GPS_diplexer_input

BY P

R5216
R / 0 / ohm / 0402

2

VCC

GNDRF

2

2
[50]

U5207

4

L5204
L / 5.6 / nH / 0402
1
2

EN

1

C5231
C / 1 / uF / 0402
2
1

Note: 52-15
U5208
C5236
C5229
U / EPOCOS_B8313
2
1 1
1
4 2
IN
OUT

Note 52-1: Both of pin AVDD43_VBAT and AVDD43_DCV voltage should be keeped
between 3.1V to 4.3V (VGPS_MAIN)

GPS_VANT

U / XC6210A332MR

2

1

C / 22 / pF / 0402

L5203
L / 22 / nH / 0402 / NC

GPS_VTCXO_SW

5

GND

3

TX2

C / 4.7 / uF / 0603

2

Note: 52-17

OUT

1

1
C5237

C5227
2

1

1

IN

2

2

J5202
R / 0 / ohm / 0402-3P(1-2)
1
2
3
GPS_VANT

GPS_VTCXO_SW

Schematic design notice of "52_CONNECTIVITY_GPS_M T2523G" page.

U5205

2

Note: 52-16

C / 4.7 / uF / 0603

U / XC6210A332MR

Title

52_CONNECTIVITY_GPS_MT3333

Size
C

MediaTek HDK MT2523G

Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Monday , May 30, 2016

Sheet

52

of

99

Page 59 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 39. CONNECTIVITY_GPS_MT2523G
Schematic design notice of "60_PERI_Audio_IO" page.
Note 60-1:

Note: 60-1

1

C / 100 / nF / 0402

C6005

R6016
R / 0 / ohm / 0402

C / 4.7 / uF / 0603

1

TP6001
NC

C6004
C / 33 / pF / 0402 / NC
C6003
C / 33 / pF / 0402 / NC

2

GND

GND

3

C6017 2

[11]

ACCDET

AU_VIN0_P

[11]

AU_VIN0_N

[11]

1
2

C6014
C / 33 / pF / 0402

C6015
C / 33 / pF / 0402

2

SHORT6001
SHORT / NC-MMD-L6-4MIL
R6019 1
R / 0 / ohm / 0402

1 C / 1 / uF / 0402

2
R6018 1
R / 0 / ohm / 0402 / NC

1

2
R6003 1
R / 0 / ohm / 0402 / NC

1 C / 1 / uF / 0402

1
XMIC

C / 100 / nF / 0402

C6016 2

2
R6017 1
R / 0 / ohm / 0402 / NC

C / 100 / pF / 0402
C6013

C6012
C / 100 / nF / 0402

2

C6002

AU_VIN1_P

FILTER/SMD/SPU0410HR5H-PB
MIC / SPU0410HR5H-PB
MIC6001
4
VDD
OUT

1

C6006
C / 100 / pF / 0402 / NC

2

[11]

1

R6001
R / 1.5 / K / 0402

In shielding

Speaker is an optional component

1

C6001

AU_VIN1_N

Note 60-4:

AU_MICBIAS0

R6004
R / 1 / K / 0402

2

[11]

The gain of class-D amplifier is set to 12dB (4V/V);
ESD diodes are for ehnhacement proposal; also could be cost reduction.

AMIC

AU_MICBIAS0

2JACK_GND
R6002 1
R / 0 / ohm / 0402 / NC

Note 60-2:
Note 60-3:

2

Headset microphone

The GND of headset microphone and Headset earphone
should be connected together first, then connected to main GND.

2

Headset earphone
Note: 60-4
R6024 1
R / 0 / ohm / 0402

2

R6005
C6025
C / 22 / uF / 0402

R / 100 / ohm / 0402

[11]

AU_HPR

R6025 1
R / 0 / ohm / 0402

2

R6006
C6007
C / 22 / uF / 0402

R / 100 / ohm / 0402

XMP3_L

Speaker

VBAT

1

AU_HPL

1

[11]

2

C6019
C / 4.7 / uF / 0402 / X5R

2

C6018
C / 100 / nF / 0402

XMP3_R

C6009
C / 33 / pF / 0402 / NC

Note: 60-3
K

C6011
C / 33 / pF / 0402 / NC

R6009
R / 470 / ohm /0402

2

C6021
C / 100 / nF / 0402

[10]

2

VO+
VO-

SHUNTDOWN GND
GND

B2
C3
A3
A2
B3

AU_SPKP
AU_SPKN

R6014 1
R / 0 / ohm / 0402

2

TP6003

AU_SPK_P

1
2

2

PVDD

C6023
C / 100 / pF / 0402
R6015 1
R / 0 / ohm / 0402

2

U / TPA2010D1

SPK_AMP_PDN

AU_SPK_N
C6024
C / 33 / pF / 0402

1

Note: 60-2
R6013
R / 300 / K / 0402 / NC

2
XMIC_SLT
EAR_EINT_1

2
5

BEAD6001
XMP3_L_SLT
L / BLM15AG100SN1 / 0402
XMP3_R_SLT
JACK_GND

4
3
1

1

1

2

SPEAKER/SMD/2403-260-00071/WS3330
SPK / 2403-260-00071-190-EN
SPK1

TP6004
ESD6002
ESD5451NKM / NC

Note: 60-3

CON6001
JACK_CON/5P/EJ-3699M-GP

AUDIOJACK/5P/SMD/EJ-3699M-GP

K

R6010

R / 47 / K / 0402

VDD
IN+
IN-

K

2

VIO28

1

C2

2
R6012 1
R / 75 / K / 0402

U6001

A

1

A1
C1

1

AU_HSN

B1

2
R6011 1
R / 75 / K / 0402

R6020
R / 0 / ohm / 0402

ESD6006
ESD5Z5.0T1G

default open

A

EAR_EINT

[11]

1
2
C6020
C / 100 / nF / 0402

2

2

2

K
[10,93]

R6008
R / 470 / ohm /0402

A

K
A
ESD5Z5.0T1GESD6004

Note: 60-3

K
A
ESD5Z5.0T1GESD6005

ESD5Z5.0T1GESD6003

XMP3_L

R6007
1
2
R / 470 / K / 0402

XMP3_R

AU_HSP

2

R6021 1
R / 0 / ohm / 0402
R6022 1
R / 0 / ohm / 0402
R6023 1
R / 0 / ohm / 0402

XMIC

[11]

1

Note: 60-1

C6022
C / 33 / pF / 0402

2

1

ESD6001
ESD5451NKM / NC

A

C6010
C / 33 / pF / 0402 / NC

C6008
C / 33 / pF / 0402 / NC

Note: 60-3
Title
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C
Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

60_PERI_Audio_IO

MediaTek HDK MT2523G
Thursday , March 31, 2016

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Page 60 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 40. PERI_Audio_IO
Note 61-1:

High speed connector is an optional component

CON6102
[11,61,92]

1

2

LCM_BLPWM_J3

4

LPTE_JP

5

6

LSDA_JP

7

8

LSA0_JP

9

10

LSCK_JP

11

12

LSCE_B_JP

13

14

15

16

17

18

19

20

ISINK

LSRSTB_JP
VBAT

R6102
R / 0 / ohm / 0402
R6103
R / 0 / ohm / 0402

VIO18
VIO28

SCL0

[10,61,62,63]

SDA0

[10,61,62,63]

TP_EINT
TP_RST

[10,61]
[10,61]

SCL0
SDA0
TP_EINT
LPTE_HS
LSRSTB_HS
TP_RST
ISINK

[10]

LSRSTB_LCM

2

1

LSRSTB_HS

3

LSRSTB_JP

LSCK_HS
LSDA_HS
LSA0_HS
LSCE_B_HS
LCM_BLPWM_J

R / 0 / ohm / 0402-3P(1-2)
J6101

[10]

LSCE_B_LCM

2

1

LSCE_B_HS

3

LSCE_B_JP

TP_SCL [94]
TP_SDA [94]
TP_EINT[94]
LPTE
[94]
LSRSTB [94]
TP_RST [94]
ISINK [94]
LSCK
[94]
LSDA
[94]
LSA0
[94]
LSCE_B [94]
PWM_EN[94]

R / 0 / ohm / 0402-3P(1-2)
J6104

[10,90]

LSCK_LCM

2

1

LSCK_HS

3

LSCK_JP

R / 0 / ohm / 0402-3P(1-2)
J6103

[10]

LPTE_LCM

2

1

LPTE_HS

3

LPTE_JP

R / 0 / ohm / 0402-3P(1-2)
J6102

[10]

LSDA_LCM

2

1

LSDA_HS

3

LSDA_JP

R / 0 / ohm / 0402-3P(1-2)
J6106

[10]

LSA0_LCM

2

1

LSA0_HS

3

LSA0_JP

R / 0 / ohm / 0402-3P(1-2)
J6105

[10,90]

LCM_BLPWM

LCM_BLPWM_J
R6101
R / 0 / ohm / 0402 / NC

61_PERI_LCD_CTP

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

MediaTek HDK MT2523G
Friday , June 24, 2016

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Sheet

61

of

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Page 61 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 41. PERI_LCD_Capacitive touch panel
VCAMA VBAT

[10,61,63]
[10,61,63]

SDA0
SCL0

1
3
5
7
9
11
13

CON6201
2
+ + 4
+ + 6
+ + 8
+ + 10
+ + 12
+ + 14
+ +

CMRST_J
CMPDN_J
CMCSK_J
CMMCLK_J
CMCSD2_J
CMCSD1_J
CMCSD0_J

[10,90]
[10,90]
[10]
[10,90]
[10]
[10,90]
[10,90]

HE7X2 MALE_TOP
DIP7X2/P2.54

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

62_PERI_CAMERA

MediaTek HDK MT2523G
Thursday , March 31, 2016

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Sheet

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Page 62 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 42. PERI_CAMERA
VBAT
VIO28

[10,61,62]

SDA0

[10,61,62]

SCL0

[10,90]

MA_SPI3_B_CS1

[10,93]

U305_EINT_CONN

[10,93]

U304_EINT_CONN

[10,93]
[10]

U302_EINT_CONN
SEN_32K_BB

2
R6303 1
R / 0 / ohm / 0402
2
R6301 1
R / 0 / ohm / 0402

CON6301
1
2
3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

2
R6304 1
R / 0 / ohm / 0402
2
R6302 1
R / 0 / ohm / 0402

VA28
VIO18

MA_SPI3_B_MISO
MA_SPI3_B_MOSI

[10]
[10]

MA_SPI3_B_SCK

[10]

MA_SPI3_B_CS0

[10]

U303_EINT_CONN
U303_RSTN_CONN
U303_PD_CONN

[10,93]
[10]
[10]

63_PERI_SENSOR_DTB

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

MediaTek HDK MT2523G
Friday , June 24, 2016

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Sheet

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Page 63 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 43. PERI_SENSOR_DTB_IO
Schematic design notice of "64_PERI_USB" page.
Note 64-1:

This ESD components are optional for better ESD performance.
The C load of these diodes must smaller than 3pf and close to USB jack.

USB
VUSB_BB

Note: 64-1

2
D1

D2

CON6401 11
. 10
1
. 9
2 VUSB
3 D- . 8
4 D+ . 7
5 ID . 6
GND.
ESD6402
Proconn_8791-N005-M1A0
ESD / AZ5825-01F

2

D3

ESD6401
ESD / AZ5315-02F

1

1

USB_DM
USB_DP

3

[10]
[10]

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

64_PERI_USB

MediaTek HDK MT2523G
Thursday , March 31, 2016

Sheet

64

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

of

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Page 64 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 44. PERI_USB
Schematic design notice of "65_PERI_KEY" page.

PWRKEY

R6502 1
R / 1 / K / 0402

This ESD diode D6501 must be closed by power button SW6301

SW6501
2
1

2

K

PWRKEY

1

[11]

Note 65-1:

Note: 65-1
3
ESD6501
ESD5451NKM / NC

4
KSW (DJT-1109S-2)

2

A

HEADER 2X1(W/O JMP)
J6501

KEYPAD
1

KROW1
2
ESD / ESD5311NKM /NC

1
3

SW6502
2
4

1
ESD6504

R6503
R / 20 / K / 0402

2

1
ESD6502

1

KCOL2
KCOL0

[10]

1
ESD6503
SW6503
2
1
3

4

2
ESD / AZ5325-01F /NC

R6501
R / 20 / K / 0402

2

[10]
[10,90]

2
ESD / ESD5311NKM /NC
1
3

SW6504
2
4

1
3

1
ESD6505
SW6505
2

2
ESD / AZ5325-01F /NC

4

KSW (DJT-1109S-2)

KSW (DJT-1109S-2)
KSW (DJT-1109S-2)

KSW (DJT-1109S-2)

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

65_PERI_Key

MediaTek HDK MT2523G
Thursday , March 31, 2016

Sheet

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Page 65 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 45. PERI_KEY

2

[11,90]

1

4

SW6601
3 KSW (DJT-1109S-2)

1 TP6611

SDA_SPI0_SOUT

1

NC

1 TP6608

SDA_SPI0_SCK

2

NC

1 TP6609

SDA_SPI0_RST_B

NC

1 TP6610

SDA_SPI0_CS

U6605

3
4

SO

SI

GND

SCK
RST_B
CS_B

VCC
WP_B

8

1
2
R6625
R / 0 / ohm / 0603

7
6
5

WP_B

U / ATMEL AT45DB161E-SHD2B-T / NC

VIO28_MK

VIO28

SDA_SPI0_SIN

1

NC

1

3

2

2
2

NC
TP6607

R6616
R / 0 / ohm / 0402 / NC

C6607
C / 1 / uF / 0402

C6608
C / 100 / nF / 0402 / NC

2

3

2

1

1

2

SY SRSTB_IN

Q / SSM3K15AMFV
Q6603

Q / SSM3K15AMFV
Q6602

1

RESETB_TGT2V8

Replace to bead 330ohm@100MHz 1.5A if power noise impact existed

1R6624
R / 10 / K / 0402 / NC

1

1

WP_B

2

1

R6615
R / 510 / K / 0402

2

R6609
R / 10 / K / 0402

Note 66-1:

VIO28_MK

VIO28_MK

VIO28_MK

Schematic design notice of "66_PERI_SWD" page.

SPI FLASH MEMORY

For RESETB LVS

1

VIO28_MK

R6605
R / 0 / ohm / 0402

1

7

JTAG_TCLK/SWD_CLK/EZP_CLK/TSI0_CH1/PTA0/UART0_CTS#/UART0_COL#/FTM0_CH5
JTAG_TDI/EZP_DI/TSI0_CH2/PTA1/UART0_RX/FTM0_CH6
JTAG_TDO/TRACE_SWO/EZP_DO/TSI0_CH3/PTA2/UART0_TX/FTM0_CH7
JTAG_TMS/SWD_DIO/TSI0_CH4/PTA3/UART0_RTS#/FTM0_CH0
NMI#/EZP_CS#/TSI0_CH5/PTA4/FTM0_CH1

VDD1
VDDA

VUSB_DAP

TP6604
NC

8

11

1

1

2

VBAT
EXTAL/PTA18/FTM0_FLT2/FTM_CLKIN0
XTAL/PTA19/FTM1_FLT0/FTM_CLKIN1/LPTMR0_ALT1

2

VIO28_MK

GND

GND

OUT

4

3

X / 8 / MHz / ABM3B-8.000MHZ-18-B2-T

1
ADC0_SE8/TSI0_CH0/PTB0/I2C0_SCL/FTM1_CH0/FTM1_QD_PHA
ADC0_SE9/TSI0_CH6/PTB1/I2C0_SDA/FTM1_CH1/FTM1_QD_PHB

C6602
C / 18 / pF / 0402

20
21
SDA_SWD_OE_B

10
9

EXTAL32
XTAL

R6619
R / 0 / ohm / 0402

19

ADC0_SE15/TSI0_CH14/PTC1/SPI0_PCS3/UART1_RTS#/FTM0_CH0/I2S0_TXD0
ADC0_SE4B/CMP1_IN0/TSI0_CH15/PTC2/SPI0_PCS2/UART1_CTS#/FTM0_CH1/I2S0_TX_FS
CMP1_IN1/PTC3/SPI0_PCS1/UART1_RX/FTM0_CH2/CLKOUT/I2S0_TX_BCLK
PTC4/SPI0_PCS0/UART1_TX/FTM0_CH3/CMP1_OUT
PTC5/SPI0_SCK/LPTMR0_ALT2/I2S0_RXD0/CMP0_OUT
CMP0_IN0/PTC6/SPI0_SOUT/PDB0_EXTRG/I2S0_RX_BCLK/I2S0_MCLK
CMP0_IN1/PTC7/SPI0_SIN/USB_SOF_OUT/I2S0_RX_FS

RESET#

1
1

2

2

NC
TP6612

R6604
R / 10 / K / 0402

IN

2

VREGIN
VOUT33
USB0_DM
USB0_DP

1
2

C6605
C / 2.2 / uF / 0603
1 TP6602
1 TP6603

17
18

X6601

C6601
C / 18 / pF / 0402

ESD6602
ESD / AZ5315-02F

D3

D2

D1

1

NC
NC

3

1
1
2

C6606
C / 1 / uF / 0603 / 50V

2

2

Note: 66-1

R6614
R / 0 / ohm / 0402

ESD / AZ5825-01F

1

Proconn_8791-N005-M1A0

6
5
4
3

2 R6602
2 R6603

R / 33 / ohm / 04021
R / 33 / ohm / 04021

NC
TP6601

ESD6601

1

SDA_JTAG_TCLK
SDA_JTAG_TDI
SDA_JTAG_TDO
SDA_JTAG_TMS
SDA_SWD_EN

VSSA

VBUS
11 CON6601
10 .
1
.
9 VUSB
2
8 . D- 3
7 . D+ 4
6 . ID 5
.
GND

12
13
14
15
16

2

2

C6604
C / 1 / uF / 0402

1

2

U6601
1

22
23
24
25
26
27
28

SDA_SPI0_RST_B
SDA_SPI0_CS
SDA_SPI0_SCK
SDA_SPI0_SOUT
SDA_SPI0_SIN

RESETB_TGT2V8

R6620
R6621

UART2_TX_MK
UART2_RX_MK

[10]
[10]

VSS1

SDA_JTAG_TRST

33

R / 0 / ohm / 0402
R / 0 / ohm / 0402

PTD4/SPI0_PCS1/UART0_RTS#/FTM0_CH4/EWM_IN
ADC0_SE6B/PTD5/SPI0_PCS2/UART0_CTS#/UART0_COL#/FTM0_CH5/EWM_OUT#
ADC0_SE7b/PTD6/SPI0_PCS3/UART0_RX/FTM0_CH6/FTM0_FLT0
PTD7/CMT_IRO/UART0_TX/FTM0_CH7/FTM0_FLT1

EPAD

VIO28_MK

29
30
31
32

R6608
R / 470 / ohm / 0402 / NC

VUSB_DAP

LED6601
LED / CL190Y G / NC

1

2

2

R6606
R / 5.1 / K / 0402 / NC

1

1

U / MK20DX128VFM5

2

R6607
R / 6.6 / K / 0402 / NC

Buffer for SWD input/output

MK20 JTAG connector

VIO28_MK
VIO28_MK

1

SDA_SPI0_SOUT

2

SWD_DIO_TGTMCU_R

3
4

VIO28_MK
NC

1 TP6605

5

NC

1 TP6606

6
7

U6604
1OE#
1A

VCC
4OE#

1Y

4A

2OE#

4Y

2A
2Y
GND

3OE#
3A
3Y
GND

14

1

R6611
R / 10 / K / 0402

13

SDA_SWD_EN

R6617
R / 5.1 / K / 0402

12

SDA_SPI0_SCK

2

SDA_SWD_OE_B

2

2

R6618
R / 0 / ohm / 0402

2

R6610
R / 10 / K / 0402

1

1

1

VIO28_MK

11
10

SDA_SWD_EN

9

SWD_DIO_TGTMCU_R

8

SDA_SPI0_SIN

SDA_JTAG_TRST
SDA_JTAG_TDI
SDA_JTAG_TMS
SDA_JTAG_TCLK
SDA_JTAG_TDO

R6622
R / 0 / ohm / 0402

SWD_CLK_TGTMCU

[10]

R6623
R / 0 / ohm / 0402

SWD_DIO_TGTMCU

[10]

1
3
5
7
9
11
13
15
17
19

CON6602
2
+ + 4
+ + 6
+ + 8
+ + 10
+ + 12
+ + 14
+ + 16
+ + 18
+ + 20
+ +

HE10X2 RA HOUSING

15
Title

U / NXP 74LVC125A

Size
C
Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

66_PERI_SWD

MediaTek HDK MT2523G
Thursday , March 31, 2016

Sheet

66

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Page 66 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 46. PERI_SWD
Schematic design notice of "90_Debug_IO" page.

HW trap

Note: 90-1

MCU JTAG Trapping

VIO28

R9003
R / 10 / K / 0402 / NC

Note: 90-4

[10,65]

R9005
R / 10 / K / 0402 / NC

2

2

2
LCM_BLPWM

Net KCOL0 is the trap pin of USB download.
Keep low for image download, keep high for normal boot.

KCOL0

[10,61]

Note 90-3:
Note 90-4:

LSCK_LCM

R9002
R / 10 / K / 0402 / NC

1

1

1

[10,61]

Note 90-2:
1

1

Note: 90-2

R9001
R / 10 / K / 0402

One of JTAG trap pin, selection combination with note 90-2
The sequence is (GPS_HRST_B, LCM_BLPWM)
(Low, Low): no JTAG; (Low, High): JTAG at keypad; (High, High): JTAG at CAM

DVDD18_VIO18

1

DVDD18_VIO18

Note 90-1:

R9004
R / 10 / K / 0402 / NC

This trap pin is used to adjust serial flash voltage.
Low: 1.86V, High: 3V
This trap pin is used to adjust system into system level test or not.
Low: Normal mode, High: Test mode

DVDD_GPO

1

1

DVDD_GPO

Note: 90-3

R9009
R / 10 / K / 0402 / NC

2

2

R9007
R / 10 / K / 0402 / NC

GPS_HRST_B

[10,63]

MA_SPI3_B_CS1

1

1

[10]

2

2

2

R9006
R / 10 / K / 0402 / NC

R9008
R / 10 / K / 0402

2

2

R9010
R / 10 / K / 0402 / NC

1

DVDD_VIO_A

2

R9016
R / 5.1 / K / 0402 / NC
[10,62]
[10,62]
[10,62]
[10,62]

CMCSD1_J
CMRST_J
CMPDN_J
CMCSD0_J

[10,62]
CMMCLK_J
[11,66]
SY SRSTB_IN

R9017 1
R9018 1
R9019 1
R9020 1

2
2
2
2

R / 0 / ohm / 0402 / NC
R / 0 / ohm / 0402 / NC
R / 0 / ohm / 0402 / NC
R / 0 / ohm / 0402 / NC

R9021 1
R9023 1

2
2

R / 0 / ohm / 0402 / NC
R / 0 / ohm / 0402 / NC

1
3
5
7
9
11
13
15
17
19

CON9002
2
+ + 4
+ + 6
+ + 8
+ + 10
+ + 12
+ + 14
+ + 16
+ + 18
+ + 20
+ +

HE10X2 RA HOUSING

Title
Size
C
Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

90_DEBUG_IO

MediaTek HDK MT2523G
Thursday , March 31, 2016

Sheet

90

of

99

Page 67 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 47. DEBUG_IO
Power Indicator
VBAT

VBAT

R9211
R / 0 / ohm / 0603

1

1

LED / LAL296-P1R2-Z
LED9209

VCORE

ISINK

[11,61]

2

3

LED9206
LED / CL190Y G
Q / SSM3K37MFV
Q9201

1
Q / SSM3K15AMFV
Q9206

1
2

VMC

LED9201
LED / CL190Y G

3 2

2

2

1 2

R9206
R / 1.58 / K / 0402

1 2

R9201
R / 1.58 / K / 0402

1

R9209
R / 180 / ohm / 0402

Title

92_POWER INDICATOR

Size
C

MediaTek HDK MT2523G

Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Thursday , March 31, 2016

Sheet

92

of

99

Page 68 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 48. POWER INDICATOR
Schematic design notice of "01_CONNECTOR" page.

VBAT

AMOLED

24

24

23

1

11
12
13
14
15
16
17
18
19
20

TDN_AMOLED
TDP_AMOLED

[1]
[1]

TCN_AMOLED
TCP_AMOLED

[1]
[1]

CON / 24 / AXE520127
2

LPTE
LSCE_B
LSDA
LSA0
LSRSTB
LSCK

VBAT

TP_SDA

CTRL FB
VIN GND
VOUT LX

4
5
6

2

C201
C / 470 / nF / 0402

1

2

1
LEDK

[3,4]

3
R404

R204
R / 3.3 / ohm / 0402

U / KTD2898 / TDFN22-6

C204
C / 10 / uF / 0603

J202

2

1

IM0
VIO18

0R

3
R405

VIO28

2
0R

IM1
C401
C / 100 / nF / 0402

TP410

LEDA
VBAT

1

J402

2
CON / 24 / OK-03F024-04

Note: 4-1

VIO28

1
R403
R / NC / 0402

1

1
2
3
4
5
6
7
8
9
10

1
2

ESD / PESD5V0V1BL / NC
2
1 D401

ESD / PESD5V0V1BL / NC
2
1 D402

ESD / PESD5V0V1BL / NC

1 D405
2

ESD / PESD5V0V1BL / NC
2
1 D403

TP_SCL
TP_SDA
TP_EINT
TP_RST

ESD / PESD5V0V1BL / NC
2
1 D404

[1,3,5]
[1,3,5]
[1,3,5]
[1,3,5]

C403
C / 100 / nF / 0402

LEDK
LEDK
GND
GND
FMARK
SDA
WR
RS
CS
RESET
IOVCC
IOVCC
VCC
VCC
GND
GND
NC
NC
NC
IM1
IM0
NC
LEDA
LEDA

1
1
1

2

TP407

CON401
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
IM1 20
IM0 21
22
23
24

LPTE
LSDA
LSA0
LSCK
LSCE_B
LSRSTB

VIO18

[2,3]

TP408

TP412
2

IM1=0,IM0=1 (3SPI)
IM1=1,IM0=0 (4SPI)
Rset=200/Imax

TP409

J401

1
VIO28

VIO18

1
2
3

2

1

1

LEDA

J203

1

[3,4]

TP_SCL

1

EP

PWM_EN

7

[1]

1

C503
C / 1 / uF / 0402

Goodix+Truly CTP (at TOP)

LEDK

U201

R401
R / 4.7 / K / 0402 / NC

2

R402
R / 4.7 / K / 0402 / NC

AXE510124

ISINK

[2,3]

1

[1,3,4]

1

TP_SCL

PL / 10 / uH / L-NR3012

1

2
4
6
8
10
13

L201

2

[1,3]

1

2
4
6
8
10
13

J201

2

TP IC:ITE7258

1
3
5
7
9
14

2

14

[1]

[1,3,5]

LCM Backlight LED Driver
1

2

1
3
5
7
9

VIO28

TP_RST

12

1

TP_SDA
TP_EINT

[1,3,4]

Model :Truly 1.6" Square
Driver : ST7789H2-G4
Spec : 240 X 240
Interface : Serial
Touch panel : Truly
Backlight types: 1S3P (3 LEDs)

[1,5]
[1]

[1]
[1]

2

VIO28

2

[1,3,4]
[1,3,4]

12

LPTE
LSCE_B
LSDA
LSA0
LSRSTB
LSCK

Note: 2-1
VIO28

CON502
11

TR-TFT 240 x 240 LCM

R501
MTP 1

11

JP101 only support serial LCM I/F.
R101,R102,R103,R104 is for selecting TR-TFT LCM or AMOLED.

TP402 TP403 TP404 TP405 TP406 TP401

23

R / 0 / ohm / 0402

ITE+Jinfu CTP (at Bottom)

Note 1-2:
Note 1-3:

2

2

C / 1 / uF / 0402

MTP

21

1

PL / 10 / uH / L-NR3012
C506
C / 10 / uF / 0402 / 6.3V

2

[5]

2

SWIRE

LPTE

[1,3,4]
LSRSTB
[5]
SWIRE
C501
C / 1 / uF / 0402

C502

11
12
13
14
15
16
17
18
19
20

1

[1,4]

20%

21

1
2
3
4
5
6
7
8
9
10

1

AVEE

L502

AVDD

22

1

25V

1

10
9
8
7
6

1

1
1

PVIN
AVIN
SWN
OUTN
CTRL

U / TPS65631W

2

C507
C / 10 / uF / 0402 / 6.3V

SWP
PGND
OUTP
FBS
AGND

1

U501
1
2
3
4
5

1
2
3
4
5
6
7
8
9
10

VIO18
C504
C / 100 / nF / 0402

CON501
22

VIO28

2

2

20%

11

PL / 10 / uH / L-NR3012

GND

AVDD

C / 10 / uF / 0402 / 6.3V

AVEE

C505

Model :AUO
Driver : RM69032
Spec : 320 X 320
Interface : MIPI DSI, 1-Lane
Touch panel : N/A
3D Display : N/A

1

2

R / 0 / ohm / 0402

L501

Note 1-1: 1. For MTK Internal development and verification.(EVB:WS3308)
2. CON101,CON102 can support display MIPI and Serial I/F at the same time.

1
R502

1

AMOLED Power

C402
C / 2.2 / uF / 0402
C0402

CON402
VDD
SCL
SDA
EINT
RESET
GND
GND
NC
GND
GND
CON / 10 / OK-20F010-04

TP IC:GT9137

Note: 1-3
SCL0
SDA0
TP_EINT
LPTE_HS

R101
1

TCP

2

TCP_AMOLED

[5]
LSRSTB_HS
TP_RST
ISINK

R / 0 / ohm / 0402

LSCK_HS
LSDA_HS
LSA0_HS
LSCE_B_HS

R102
1

TCN

2

TCN_AMOLED

[5]

R / 0 / ohm / 0402

TCP
TCN
TDP
TDN

[10 94]
[10 94]
[10 94]
[10 94]

LCM_BLPWM

TP_SCL [94]
TP_SDA [94]
TP_EINT[94]
LPTE
[94]
LSRSTB [94]
TP_RST [94]
ISINK [94]

GND_POWER

GND_SIGNAL

LSCK
[94]
LSDA
[94]
LSA0
[94]
LSCE_B [94]
PWM_EN[94]

R103
1

TDP

2

TDP_AMOLED

[5]

TDN_AMOLED

[5]

R / 0 / ohm / 0402

R104
TDN

1

2

R / 0 / ohm / 0402

Title
Size
D
Date:

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

94_MIPI_AMOLED_CTP

MTK Confidential

Monday , October 24, 2016

Sheet

94

of

99

Page 69 of 82

LinkIt 2523 HDK v11 User's Guide
Figure 49. LCM

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 70 of 82

LinkIt 2523 HDK v11 User's Guide

6.

Layout (V11)

Figure 50. LinkIt 2523 HDK layout (Layer 1)

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 71 of 82

LinkIt 2523 HDK v11 User's Guide

Figure 51. LinkIt 2523 HDK layout (Layer 2)

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 72 of 82

LinkIt 2523 HDK v11 User's Guide

Figure 52. LinkIt 2523 HDK layout (Layer 3)

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 73 of 82

LinkIt 2523 HDK v11 User's Guide

Figure 53. LinkIt 2523 HDK layout (Layer 4)

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 74 of 82

LinkIt 2523 HDK v11 User's Guide

7.

LinkIt 2523 HDK’s BOM (V11)

Table 30 shows the bill of material details of the HDK. Users can refer this table to understand the components
used on the HDK as well as to customize and change parts as needed.
Table 30. LinkIt 2523 HDK bill of materials
Ite
m

Quantity

Reference

Part

PCB Footprint

Manufacturer

1

2

ANT5001,ANT5002

ANT sprint

PAD/SMD/2.3X1.0

2

1

BAT5201

ML621S

3

1

BEAD6001

Murata

4

1

CON2101

L / BLM15AG100SN1 /
0402
HEAD_6P

C0.22F3.3V/SMD/
EN-RL
BEAD0402
DIP6/P2.54

PIN CHIH

5

1

CON401

CON / 24 / OK-03F02404

OCN

6

1

CON402

CON / 10 / OK-20F01004

7

1

CON4101

CON / 12 / TA-M017012-07-811

7

1

CON501

CON / 24 / AXE520127

8

1

CON502

AXE510124

9

1

CON6001

10

1

CON6101

11

1

CON6102

12

1

CON6201

JACK_CON/5P/EJ3699M-GP
QTH-060-01-FDA (120
pin)
JUMPER 10x2
DIP/P2.54
HE7X2 MALE_TOP

CON12X4/SMD/F/
OK-03F02404/WS3287
CON5X2/SMD/P0.
4/F/OK-20F01004/WS3287
MICROSD/8P/SM
D/TA-M017-01207-811
CON10X2/SMD/P
0.4/F/AXE520127
/WS3287
CON5X2/SMD/P0.
4/F/AXE510124/
WS3287
AUDIOJACK/5P/S
MD/EJ-3699M-GP
QTH-060-01-F-DA
DIP10X2/P2.54

13

1

CON6301

14

2

CON6401,CON6601

15

2

CON6602,CON9002

HE10X2 RA HOUSING

16

1

CON9001

17

1

C201

CON / 40 / AXT640124
/ NC
C / 470 / nF / 0402

C0402

18

35

C / 1 / uF / 0402

C0402

JUMPER 12x2
DIP/P2.54
Proconn_8791-N005M1A0

C501,C502,C503,C1102,
C1103,C1106,C1112,C1113,
C1118,C1121,C1122,C1123,
C1124,C1125,C1126,C1131,
C1132,C1137,C1138,C2002,

© 2015 - 2016 MediaTek Inc.

Panasonic

OCN
Smart-conn
Panasonic
Panasonic
Dian Jin
SAMTEC
PIN CHIH

DIP7X2/P2.54

PIN CHIH

DIP12X2/P2.54

PIN CHIH

MICROUSB/5P/S
MD/P0.65/R/879
1-N005-M1A0
JP10X2/P2.54/R

Proconn
PIN CHIH
Panasonic

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 75 of 82

LinkIt 2523 HDK v11 User's Guide
Ite
m

Quantity

Reference

Part

PCB Footprint

C / 2.2 / uF / 0402 / NC

C0402

19

2

C4101,C5201,C5210,C5211,
C5214,C5215,C5216,C5217,
C5220,C5226,C5231,C6016,
C6017,C6604,C6607
C1105,C1117

20

2

C1107,C1108

C / 10 / pF / 0402

C0402

21

10

C / 2.2 / uF / 0402

C0402

22

6

C / 10 / uF / 0603

C0603

23

9

C / 4.7 / uF / 0603

C0603

24

4

C402,C1109,C1119,C1120,
C1139,1140,C2003,C4001,
C5212,C5223
C204,C1110,C1115,C1128,
C1130,C2004
C1114,C1127,C5218,C5219,
C5224,C5225,C5237,C5238,
C6005
C505,C506,C507,C1116

C / 10 / uF / 0402

C0402

25

3

C1129,C2006,C5227

C / 22 / pF / 0402

C0402

26

2

C1133,C6608

C / 100 / nF / 0402 / NC

C0402

27

16

C / 100 / nF / 0402

C0402

28

1

C401,C403,C504,C1134,
C1135,C4003,C4004,C4006,
C5002,C6001,C6002,C6012,
C6018,C6020,C6021,C9001
C1136

C0402

29

3

C2001,C2101,C6606

C / 2.2 / nF / 0402 /
X5R
C / 1 / uF / 0603 / 50V

30

2

C2005,C2102

C / 22 / uF / 0603

C0603

31

2

C4002,C4005

C / 4.7 / uF / 0402

C0402

32

1

C5001

C / 2.2 / pF / 0402

C0402

C0603

33

4

C5003,C5004,C5007,C5008

C / NC / 0402

C0402

34

6

C / 18 / pF / 0402

C0402

35

1

C5005,C5006,C5229,C5236,
C6601,C6602
C5009

C0402

36

45

C / 3.6 / pF / 0402 /
GJM1555C1H3R6WB01
D
NC

37

1

C / 1 / pF / 0402

C0402

TP1001,TP1101,TP1102,
TP1103,TP1104,TP1105,
TP1106,TP5001,L5001,
TP5002,L5002,TP5003,
TP5201,TP5202,TP5203,
C5203,TP5204,TP5205,
TP5206,TP5207,TP5208,
TP5209,TP5210,TP5211,
TP5212,TP5213,TP5214,
TP5215,TP5216,TP6001,
TP6003,TP6004,TP6601,
TP6602,TP6603,TP6604,
TP6605,TP6606,TP6607,
TP6608,TP6609,TP6610,
TP6611,TP6612,TP9001
C5206

© 2015 - 2016 MediaTek Inc.

Manufacturer

Murata

TP30MIL

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 76 of 82

LinkIt 2523 HDK v11 User's Guide
Ite
m
38

Quantity

Reference

Part

PCB Footprint

1

C5207

C / 1 / nF / 0402

C0402

39

3

C5208,C5209,C5213

C / 4.7 / nF / 0402

C0402

40

2

C5221,C5222

C / 22 / pF / 0402

C0402

41

1

C5228

C / 220 / nF / 0402

C0402

42

5

C / 0402 / NC

C0402

43

6

C / 33 / pF / 0402 / NC

C0402

44

1

C5230,C5232,C5233,C5234,
C5235
C6003,C6004,C6008,C6009,
C6010,C6011
C6006

C / 100 / pF / 0402 / NC

C0402

45

2

C6007,C6025

C / 22 / uF / 0402

C0402

46

2

C6013,C6023

C / 100 / pF / 0402

C0402

47

4

C6014,C6015,C6022,C6024

C / 33 / pF / 0402

C0402

48

1

C6019

C0402

49

1

C6605

C / 4.7 / uF / 0402 /
X5R
C / 2.2 / uF / 0603

50

1

DIPX5001

DP1608-V1524CA

51

3

ESD2101,ESD6402,ESD6601

ESD / AZ5825-01F

DIPLEXER/6P/SM
D/DP1608
VR0402

52

1

ESD2102

ESD / AZ5725-01F

VR0402

53

12

ESD5451NKM / NC

SOD923/SMD/AK

54

4

ESD5Z5.0T1G

55

2

ESD4101,ESD4102,ESD4103,
ESD4104,ESD4105,ESD4106,
ESD4107,ESD4108,ESD4109,
ESD6001,ESD6002,ESD6501
ESD6003,ESD6004,ESD6005,
ESD6006
ESD6401,ESD6602

56

2

ESD6502,ESD6503

57

2

ESD6504,ESD6505

ESD / ESD5311NKM
/NC
ESD / AZ5325-01F /NC

SOD523/ESD5Z2.5
T1
ESD/SMD/AZ5315
-02F
VR0402

58

1

F2001

2A FUSE

FUSE/DIP/SMD

59

5

STAND

60

15

JMP_3P(2-3)

HOLE/PTH/R6D3.
5
DIP3/P2.54

61

7

HEADER 2X1(W/O JMP)

DIP2/P2.54

62

2

H2001,H2002,H2003,H2004,
H2005
J1001,J1002,J1003,J1004,
J1005,J1006,J1007,J1008,
J1009,J1010,J1011,J1012,
J1015,J1101,J2001
J201,J202,J203,J1013,
J1014,J1018,J6501
J401,J402

HEADER 2X1(W JMP)

DIP2/P2.54

63

23

R / 0 / ohm / 04023P(1-2)

R0402/(1-2)

R404,R405,J1016,J1102,
J1103,J1104,J1106,J1108,
J1109,J1110,J1111,J1112,
J1114,J5001,J5002,J5003,
J5004,J5201,J5202,J6101,

ESD / AZ5315-02F

© 2015 - 2016 MediaTek Inc.

Manufacturer

C0603

VR0402

Advanced
Ceramic
Amazing
Microelectronic
Amazing
Microelectronic
TY
Semiconductor
ON
Semiconductor
Amazing
Microelectronic
TY
Semiconductor
Amazing
Microelectronic
PAN HAO

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 77 of 82

LinkIt 2523 HDK v11 User's Guide
Ite
m

Quantity

Reference

Part

PCB Footprint

R / 0 / ohm / 04023P(1-2) / NC
CON3/SMD/P2.54/C11
1400/B/ACMELUX

R0402/(1-2)

Manufacturer

64

1

J6102,J6103,J6104,J6105,
J6106
J1105

65

1

J1113

66

4

LED / CL190YG

67

1

LED2001,LED2003,LED9201,
LED9206
LED6601

CON3/SMD/P2.54
/C111400/B/ACM
ELUX
LED190

LED / CL190YG / NC

LED190

68

1

LED9209

LED / LAL296-P1R2-Z

LED190

CITIZEN
ELECTRONIC
CITIZEN
ELECTRONIC
OSRAM

69

3

L201,L501,L502

PL / 10 / uH / L-NR3012

L-NR3012

Taiyo Yuden

70

1

L1101

1

L1102

72

1

L2001

PL / MEKK2520T1R0M

L/IND/SMD/MBKK
1608
L/IND/SMD/MAK
K2016
L/IND/SMD/2520

Taiyo Yuden

71

PL / MBKK1608T1R0M
/ SMD1608
PL / MAKK2016T2R2M

73

1

L5003

L0402

Murata

74

1

L5201

L / 6.8 / nH /
LQG15HS6N8H02D
L / 1.2 / nH / 0402

L0402

75

1

L5202

L / 1 / uH / 0806

L/IND/SMD/0402

1

L5203

L / 22 / nH / 0402 / NC

76

1

L5204

L / 5.6 / nH / 0402

L/IND/SMD/LQM
2MPN1R0NG0
L0402

77

1

MIC6001

78

1

Q2101

MIC / SPU0410HR5HPB
Q / PNMT6N1-LB

79

3

Q6602,Q6603,Q9206

Q / SSM3K15AMFV

80

1

Q9201

Q / SSM3K37MFV

81

1

R204

R / 3.3 / ohm / 0402

81

2

R1002,R1003

R / 4.7 / K / 0402

82

1

R1004

R / 5.1 / K / 0402 / 1%

21L1B/SMD/SSM3
K35MFV
R0402

83

32

R / 0 / ohm / 0402 / NC

R0402

84

1

R1006,R1105,R1113,R1136,
R4005,R4009,R5005,R5009,
R5011,R5012,R5013,R5206,
R5217,R5218,R5243,R6002,
R6003,R6017,R6018,R6101,
R6616,R9011,R9012,R9013,
R9014,R9015,R9017,R9018,
R9019,R9020,R9021,R9023
R1010

R / 1.8 / K / 0402 / 1%

R0402

85

2

R1101,R2004,R5211

R / 1 / K / 0402 / NC

R0402

© 2015 - 2016 MediaTek Inc.

ACMELUX

Taiyo Yuden
Taiyo Yuden

L0402

Knowles

FILTER/SMD/SPU
0410HR5H-PB
DFN6/SMD/P0.65
/PNMT6N1-LB
21L1B/SMD/SSM3
K35MFV
R0402

Prisemi
Toshiba
Toshiba

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 78 of 82

LinkIt 2523 HDK v11 User's Guide
Ite
m
86

Quantity

87

Reference

Part

PCB Footprint

R / 0 / ohm / 0402

R0402

1

R501,R502,R1102,R1103,
R1104,R1106,R1112,R1114,
R1115,R1117,R1118,R1119,
R1120,R1121,R1122,R1123,
R1124,R1125,R1126,R1135,
R1139,R2002,R2108,R2109,
R4007,R4008,R4010,R4101,
R5002,R5003,R5006,R5007,
R5010,R5201,R5205,R5216,
R5219,R5225,R5226,R5227,
R5228,R5230,R5232,R5233,
R5234,R5235,R5236,R5237,
R5238,R5239,R5240,R5241,
R5242,R6014,R6015,R6016,
R6019,R6020,R6021,R6022,
R6023,R6024,R6025,R6102,
R6103,R6301,R6302,R6303,
R6304,R6605,R6614,R6618,
R6619,R6620,R6621,R6622,
R6623
R1116

R / 1 / ohm / 0402

R0402

88

1

R1131

R / 100 / K / 0402

R0402

89

1

R1133

R / 430 / K / 0402

R0402

90

1

R1134

R / 360 / K / 0402

R0402

91

4

R1137,R5224,R6625,R9211

R / 0 / ohm / 0603

R0603

92

1

R2001

R / 2.2 / K / 0402

R0402

93

1

R2003

R / 1 / K / 0402

R0402

94

2

R2005,R6615

R / 510 / K / 0402

R0402

95

1

R2006

R / 91 / K / 0402

R0402

96

3

R2018,R9201,R9206

R / 1.58 / K / 0402

R0402

97

1

R2019

R / 1 / K / 0603

R0603

98

3

R2101,R5211,R6004,R6502

R / 1 / K / 0402

R0402

77

99

1

R2102

R / 39 / K / 0402 / 1%

R0402

100

1

R2103

R0805

101

1

R2104

R / 0.056 / ohm / 0805
/ 1%
R / 330 / K / 0402 / 1%

102

2

R2105,R6001

R / 1.5 / K / 0402

R0402

103

1

R2106

R / 16.9 / K / 0402 / 1%

R0402

104

1

R2107

R0402

105

21

NTC / NTCG103JF103FT
/ 0402
R / 10 / K / 0402 / NC

106

1

R / 120 / K / 0402 / NC

R0402

R4001,R4002,R4003,R4004,
R4006,R4102,R4103,R4104,
R5203,R5204,R5207,R5209,
R6624,R9002,R9003,R9004,
R9005,R9006,R9007,R9009,
R9010
R5210

© 2015 - 2016 MediaTek Inc.

Manufacturer

R0402

TDK

R0402

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 79 of 82

LinkIt 2523 HDK v11 User's Guide
Ite
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107

Quantity

Reference

Part

PCB Footprint

1

R5220

R / 91 / K / 0402 / NC

R0402

108

2

R6005,R6006

R / 100 / ohm / 0402

R0402

109

1

R6007

R / 470 / K / 0402

R0402

110

2

R6008,R6009

R / 470 / ohm /0402

R0402

111

1

R6010

R / 47 / K / 0402

R0402

112

2

R6011,R6012

R / 75 / K / 0402

R0402

113

1

R6013

R / 300 / K / 0402 / NC

R0402

114

2

R6501,R6503

R / 20 / K / 0402

R0402

115

2

R6602,R6603

R / 33 / ohm / 0402

R0402

116

7

R / 10 / K / 0402

R0402

117

3

R5208,R6604,R6609,R6610,
R6611,R9001,R9008
R6606,R9016,R9022

R / 5.1 / K / 0402 / NC

R0402

118

1

R6607

R / 6.6 / K / 0402 / NC

R0402

119

1

R6608

R0402

120

1

R6617

R / 470 / ohm / 0402 /
NC
R / 5.1 / K / 0402

R0402

115

1

R9209

R / 180 / ohm / 0402

R0402

116

1

SHORT6001

NC-4MIL

117

2

SMA5001,SMA5002

SHORT / NC-MMD-L64MIL
SMA-1.66MM

SMA1

PIN CHIH

118

1

SPK1

SPK / 2403-260-00071190-EN

EDOM

119

6

KSW (DJT-1109S-2)

120

1

SW6501,SW6502,SW6503,
SW6504,SW6505,SW6601
TCXO5201

121

1

U201

122

1

U501

TCXO / 26 / MHz /
7L26002009
U / KTD2898 / TDFN226
U / TPS65631W

123

1

U1000

MT2523G

124

1

U1101

U / TPS62560

125

2

U2001,U2002

U / SS2003M

126

1

U2003

U / TPD1S514-1

127

1

U2004

U / TPS62065

128

1

U4001

U / 153 eMMC /
THGBMBG5D1KBAIL

129

2

U5203,U5205

U / XC6210A332MR

SPEAKER/SMD/24
03-26000071/WS3330
SW/4P/SMD/SHO
WMAN
TCXO/SMD/2.5X2.
0/IT2205BE
TDFN22/6P/SMD/
P0.65/KTD2898
SON10/SMD/P0.5
/TPS65631W
MT2523G/TFBGA
246/P0.4/B0.25/9
.2X6.0
SON6/SMD/P0.65
/TPS62560
SOT363/6P/SMD/P0.6
5/SS2003M
DSBGA12/P0.4/B0
.225/TPD1S514
WSON8/SMD/P0.
5/TPS62060
FBGA153/P0.5/B0
.27/11.5X13/SKHY
NIX
SOT23-5

© 2015 - 2016 MediaTek Inc.

Manufacturer

DJ TECH
TXC
Kinetic
Texas
Instruments
MediaTek
Texas
Instruments
ON
Semiconductor
Texas
Instruments
Texas
Instruments
Toshiba
Torex

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 80 of 82

LinkIt 2523 HDK v11 User's Guide
Ite
m

Quantity

Reference

Part

PCB Footprint

Manufacturer
Semiconductor

130

2

U5206,U5208

U / EPOCOS_B8313

131

1

U5207

U / BGA725L6

132

1

U6001

U / TPA2010D1

133

1

U6601

U / MK20DX128VFM5

134

1

U6604

U / NXP 74LVC125A

135

1

U6605

136

1

U6606

137

1

X1101

138

1

X5001

139

1

X5204

140

1

X6601

U / ATMEL
AT45DB161E-SHD2B-T /
NC
TCXO / SiT1533AI-H4D14-32768 / NC
X / 32 / KHz / SC-20S /
7pF
X / 26 / MHz /
8Q26000008
X / FC-135 32.768KHZ
12.5pF
X / 8 / MHz / ABM3B8.000MHZ-18-B2-T

© 2015 - 2016 MediaTek Inc.

SAW/SMD/1.05X1
.35
TSLP6/SMD/P0.4/
BGA725L6/S
WCSP9/SMD/P0.5
/B0.27/TPA2010D
1
QFN32/SMD/P0.5
/98ARE10566D
DHVQFN14/SMD/
P0.5/74LVC125A
SOIC8/SMD

TDK

SIT1533AI-SMD32768
CRYSTAL/SMD/C
M8V-T1A
CRYS/SMD/D1.6X
1.2/8Q26000008
RTC/SMD/2P/3.2X
1.5
CRYS/SMD/5X3.2/
ABM3B8.000MHZ-22-B2T

Si-Time

Infineon
Technologies
Texas
Instruments
Freescale
NXP
ATMEL

Seiko
Instruments
TXC
EPSON
ABRACON

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 81 of 82

LinkIt 2523 HDK v11 User's Guide

8.

Appendix A: Acronyms and Abbreviations

The acronyms and abbreviations used in this user manual are listed in Table 31.
Table 31. Acronyms and abbreviations
Acronym
ADC
BLE
CMSISDAP
eFuse
GPIO
HDK
I2S
JTAG
MSDC
NTC
PCM
RTC
SPI
TFT
VIO18
VSF
VA18
VCAMA
VMC

Description
Analog-to-Digital Converter
Bluetooth Low Energy
Cortex® Microcontroller Software
Interface Standard Debug Access Port
Electronic Fuses
General Purpose I/O
Hardware Development Kit
Integrated Interchip Sound
Joint Test Action Group
Mass Storage Device Class
Negative Temperature Coefficient
Pulse-code modulation
Real Time Counter
Serial Peripheral Interface Bus
Thin-Film Transistor
The power rail of digital LDO output 1.8V
The power rail of digital LDO output for
the serial flash
The power rail of analog LDO output 1.8V.
The power rail of analog LDO output for
camera.
The power rail of digital LDO output for
eMMC.

Acronym
BT
CLKO
CTP

Description
Bluetooth
Clock out
Capacitive Touch Panel

EINT
GPS
I2C
ISINK
MIPI
NC
OMTP
PSRAM
SDMMC
SWD
USB
VIO28
VA28

External interrupt
Global Positioning System
Inter-Integrated Circuit
LCM backlight current sink source
Mobile Industry Processor Interface
Not connected
Open Mobile Terminal Platform
Pseudo Static Random Access Memory
Secure Digital Multimedia Card
Serial Wire Debug
Universal Serial Bus
The power rail of digital LDO output 2.8V.
The power rail of analog LDO output 2.8V.

VBT

The power rail of analog LDO output for
Bluetooth.
The power rail of digital LDO output for USB.

VUSB33
VBAT

The main power rail for battery charging and
system operating power source.

© 2015 - 2016 MediaTek Inc.

This document contains information that is proprietary to MediaTek Inc. (“MediaTek”) and/or its licensor(s).
Any unauthorized use, reproduction or disclosure of this document in whole or in part is strictly prohibited.

Page 82 of 82



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Keywords                        : MediaTek, LinkIt, development, platform, RTOS, 2523, MT2523G, open, source, HDK, board, IoT, internet, things, smart, home, office, FreeRTOS, flash, RTC, UART, ARM Cortex-M4, GNSS, BLE, Bluetooth, PWM, I2C, MIPI, camera, LCM, CMSIS-DAP, keypad
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Source Modified                 : D:20161104094829
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Tag Ad Hoc Review Cycle ID      : -523490182
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Title                           : LinkIt 2523 HDK v11 User's Guide
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Creator                         : MediaTek Inc.
Producer                        : Adobe PDF Library 10.0
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