Discovery Kit For IoT Node, Multi Channel Communication With STM32L4 B L475E IOT01A User Manual
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UM2153
User manual
Discovery kit for IoT node, multi-channel communication
with STM32L4
Introduction
The STM32L4 Discovery kit for the IoT node (B-L475E-IOT01A) allows users to develop
applications with direct connection to cloud servers.
The STM32L4 Discovery kit enables a wide diversity of applications by exploiting low-power
multilink communication (BLE, Sub-GHz), multiway sensing (detection, environmental
awareness) and ARM® Cortex®-M4 core-based STM32L4 Series features.
Arduino™ Uno V3 and PMOD connectivity provide unlimited expansion capabilities with a
large choice of specialized add-on boards.
The STM32L4 Discovery kit includes an ST-LINK debugger/programmer and comes with
the comprehensive STM32Cube software libraries together with packaged software
examples to seamlessly connect to cloud servers. In addition a direct access to the ARM®
mbed Enabled™ on-line resources at http://mbed.org is available.
Figure 1. B-L475E-IOT01A Discovery kit
1. Picture is not contractual.
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1
Contents
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Contents
1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2
Product marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3
System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4
Development toolchains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5
Demonstration software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6
Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7
Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.1
STM32L4 Discovery kit for IoT node layout . . . . . . . . . . . . . . . . . . . . . . . 10
7.2
STM32L4 Discovery kit for IoT node mechanical drawing . . . . . . . . . . . . 12
7.3
Embedded ST-LINK/V2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.3.1
Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.3.2
ST-LINK/V2-1 firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.4
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.5
Programming/debugging when the power supply is not from
ST-LINK (5V_ST_LINK) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.6
Clock sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.7
Reset sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.8
USB OTG FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.9
Quad-SPI NOR Flash memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.10
Virtual COM port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.11
RF modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.12
7.11.1
Bluetooth (V4.1 compliant) SPBTLE-RF module . . . . . . . . . . . . . . . . . . 20
7.11.2
Sub-GHz low-power-programmable RF module
(SPSGRF-868 or SPSGRF-915) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.11.3
Wi-Fi module Inventek ISM43362-M3G-L44 (802.11 b/g/n) . . . . . . . . . 22
7.11.4
Dynamic NFC Tag based on M24SR with its printed NFC antenna . . . . 23
STMicroelectronics sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.12.1
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Two on-board ST-MEMS microphones (MP34DT01) . . . . . . . . . . . . . . 24
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Contents
7.12.2
Capacitive digital sensor for relative humidity and
temperature (HTS221) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.12.3
High-performance 3-axis magnetometer (LIS3MDL) . . . . . . . . . . . . . . . 25
7.12.4
3D accelerometer and 3D gyroscope (LSM6DSL) . . . . . . . . . . . . . . . . 26
7.12.5
260-1260 hPa absolute digital output barometer (LPS22HB) . . . . . . . . 26
7.12.6
Time-of-Flight and gesture detection sensor (VL53L0X) . . . . . . . . . . . . 27
7.13
STSAFE-A 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.14
Buttons and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
7.15
I2C addresses of modules used on MB1297 . . . . . . . . . . . . . . . . . . . . . . 29
Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.1
Arduino Uno V3 connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.2
TAG connector CN5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.3
ST-LINK/V2-1 USB Micro-B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.4
ST-LINK debug connector CN8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.5
USB OTG FS micro-AB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.6
PMOD connector CN10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.7
Jumper JP5 for IDD measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Appendix A STM32L4 Discovery kit for IoT node I/O assignment . . . . . . . . . . . 37
Appendix B Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Appendix C Board revision history and limitations . . . . . . . . . . . . . . . . . . . . . . 53
Appendix D Federal Communications Commission (FCC)
and Industry Canada (IC) Compliance . . . . . . . . . . . . . . . . . . . . . . . 54
D.1
8.8
FCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
D.1.1
Part 15.19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
D.1.2
Part 15.105 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.7.1
Part 15.21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
IC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8.8.1
Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.8.2
Déclaration de conformité . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
8.8.3
RF exposure statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
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List of tables
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List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
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Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Button and LED control port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
I2C addresses for each module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Arduino connector pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
TAG connector pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
USB Micro-B connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
ST-LINK debug connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
USB OTG FS Micro-AB pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
USB OTG FS power management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
PMOD solder bridge configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
STM32L4 Discovery kit for IoT node I/O assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Board revision history and limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
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List of figures
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
Figure 24.
Figure 25.
Figure 26.
Figure 27.
Figure 28.
Figure 29.
Figure 30.
Figure 31.
Figure 32.
B-L475E-IOT01A Discovery kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Hardware block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
STM32L4 Discovery kit for IoT node (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
STM32L4 Discovery kit for IoT node (bottom view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
STM32L4 Discovery kit for IoT node mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . 12
USB composite device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
JP4: 5V_ST_LINK selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
JP4: 5V_ARD selection from CN6 (VIN). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
JP4: 5V_USB_FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
JP4: 5V_VBAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
JP4: 5V_USB_CHARGER selection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Power tree . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
SPBTLE-RF module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
SPSGRF module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
ISM43362-M3G-L44 module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Label for Class 1 laser products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Arduino connector (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
TAG connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
TC2050-IDC-NL cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
USB Micro-B connector CN7 (front view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
USB OTG FS Micro-AB connector CN9 (front view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
STM32L4 Discovery kit for IoT node (top) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
STM32L475VG microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
STM32L475VG microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
USB OTG FS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
RF module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
ST-MEMS sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
NFC and STSAFE part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Arduino Uno V3 connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
ST-LINK/V2-1 with support of SWD only . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
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Features
1
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Features
• Ultra-low-power STM32L4 Series MCUs based on ARM® Cortex®-M4 core with 1 Mbyte
of Flash memory and 128 Kbytes of SRAM, in LQFP100 package
• 64-Mbit Quad-SPI (Macronix) Flash memory
• Bluetooth® V4.1 module (SPBTLE-RF)
• Sub-GHz (868 or 915 MHz) low-power-programmable RF module
(SPSGRF-868 or SPSGRF-915)
• Wi-Fi® module Inventek ISM43362-M3G-L44 (802.11 b/g/n compliant)
• Dynamic NFC tag based on M24SR with its printed NFC antenna
• 2 digital omnidirectional microphones (MP34DT01)
• Capacitive digital sensor for relative humidity and temperature (HTS221)
• High-performance 3-axis magnetometer (LIS3MDL)
• 3D accelerometer and 3D gyroscope (LSM6DSL)
• 260-1260 hPa absolute digital output barometer (LPS22HB)
• Time-of-Flight and gesture-detection sensor (VL53L0X)
• 2 push-buttons (user and reset)
• USB OTG FS with Micro-AB connector
• Board expansion connectors:
– Arduino™ Uno V3
– PMOD
• Flexible power-supply options: ST-LINK USB VBUS or external sources
• On-board ST-LINK/V2-1 debugger/programmer with USB
re-enumeration capability: mass storage, virtual COM port and debug port
• Comprehensive free software including a variety of examples, as part of the STM32Cube
package, as well as a cloud connector software expansion, enabling direct access to cloud
servers
• Support of wide choice of Integrated Development Environments (IDEs) including IAR™,
Keil®, GCC-based IDEs, ARM® mbed Enabled™
• ARM® mbed Enabled™ (see http://mbed.org)
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Product marking
Product marking
Evaluation tools marked as "ES" or "E" are not yet qualified and therefore they are not ready
to be used as reference design or in production. Any consequences deriving from such
usage will not be at ST charge. In no event, ST will be liable for any customer usage of these
engineering sample tools as reference design or in production.
"E" or "ES" marking examples of location:
3
4
5
•
On the targeted STM32 that is soldered on the board (for illustration of STM32 marking,
refer to the section “Package characteristics” of the STM32 datasheet at www.st.com).
•
Next to the evaluation tool ordering part number, that is stuck or silk-screen printed on
the board.
System requirements
•
Windows® OS (XP, 7, 8 and 10), Linux® or MacOS™
•
USB Type-A to Micro-B cable
Development toolchains
•
Keil® MDK-ARM(a)
•
IAR™ EWARM(a)
•
GCC-based IDEs including free SW4STM32 from AC6
•
ARM® mbed Enabled™ online
Demonstration software
The demonstration software, included in the STM32Cube package, is preloaded in the
STM32 Flash memory for easy demonstration of the device peripherals in standalone mode.
The latest versions of the demonstration source code and associated documentation can be
downloaded from the www.st.com/stm32app-discovery webpage.
a. On Windows
®
only.
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Ordering information
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Ordering information
To order the B-L475E-IOT01A Discovery kit for IoT node, depending on the frequency of the
Sub-GHz module, refer to Table 1.
Table 1. Ordering information
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Order code
Sub-GHz operating frequency
B-L475E-IOT01A1
915 MHz
B-L475E-IOT01A2
868 MHz
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Hardware layout and configuration
Hardware layout and configuration
The STM32L4 Discovery kit for IoT node is designed around the STM32L475VGT6 (100pin, LQFP package). The hardware block diagram (see Figure 2) illustrates the connection
between the STM32 and peripherals (embedded ST-LINK, Arduino Uno V3 shields, PMOD
connector, Quad-SPI Flash memory, USB OTG connectors, digital microphones, various
ST-MEMS sensors and the four RF modules (Wi-Fi, Bluetooth, Sub-GHz and NFC)).
Figure 4 and Figure 5 help users to locate these features on the STM32L4 Discovery kit.
Figure 2. Hardware block diagram
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STM32L4 Discovery kit for IoT node layout
Figure 3. STM32L4 Discovery kit for IoT node (top view)
Hardware layout and configuration
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7.1
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Figure 4. STM32L4 Discovery kit for IoT node (bottom view)
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STM32L4 Discovery kit for IoT node mechanical drawing
Figure 5. STM32L4 Discovery kit for IoT node mechanical drawing
Hardware layout and configuration
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7.3
Hardware layout and configuration
Embedded ST-LINK/V2-1
The ST-LINK/V2-1 programming and debugging tool is integrated on the STM32L4 Discovery
kit for IoT node. Compared to the ST-LINK/V2 the changes are listed below.
The new features supported on the ST-LINK/V2-1 are:
•
USB software re-enumeration
•
Virtual COM port interface on USB
•
Mass storage interface on USB
•
USB power management request for more than 100 mA power on USB
The following features are no more supported on the ST-LINK/V2-1:
•
SWIM interface
•
Application voltage lower than 3 V
For all general information concerning debugging and programming features common
between V2 and V2-1 versions, refer to ST-LINK/V2 in-circuit debugger/programmer for
STM8 and STM32 User manual (UM1075) at the www.st.com website.
7.3.1
Drivers
Before connecting STM32L475VG to a Windows® PC (XP, 7, 8 or 10) via USB, a driver for
the ST-LINK/V2-1 must be installed. It is available at the www.st.com website.
In case the STM32L4 Discovery kit for IoT node is connected to the PC before the driver is
installed, some STM32L4 Discovery kit interfaces may be declared as “unknown” in the PC
device manager. In this case the user must install the driver files, and update the driver of
the connected device from the device manager (see Figure 6).
Note:
Prefer using the “USB Composite Device” handle for a full recovery.
Figure 6. USB composite device
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7.3.2
UM2153
ST-LINK/V2-1 firmware upgrade
The ST-LINK/V2-1 embeds a firmware upgrade mechanism for in-situ upgrade through the
USB port. As the firmware may evolve during the lifetime of the ST-LINK/V2-1 product (for
example new functionalities, bug fixes, support for new microcontroller families), it is
recommended to visit the www.st.com website, before starting to use the STM32L4
Discovery kit for IoT node and periodically, to stay up-to-date with the latest firmware
version.
7.4
Power supply
The STM32L4 Discovery kit for IoT node is designed to be powered by 5 V DC power
supply. It is possible to configure the STM32L4 Discovery kit to use any of the following five
sources for the power supply: 5V_ST_LINK, 5V_ARD, 5V_USB_FS, 5V_VBAT and
5V_USB_CHARGER.
In case of external 5 V DC power adapter, the STM32L4 Discovery kit must be powered by
a power supply unit or by an auxiliary equipment complying with the standard EN-60950-1:
2006+A11/2009, and must be Safety Extra Low Voltage (SELV) with limited power
capability.
•
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5V_ST_LINK (See Figure 7) is a 5V DC power with limitation from CN7 (the USB type
Micro-B connector of ST-LINK/V2-1). In this case, jumper of JP4 should be on pins 1
and 2 to select the 5V_ST_LINK power source on silkscreen of JP4. This is the default
setting. If the USB enumeration succeeds, the 5V_ST_LINK power is enabled, by
asserting the PWR_ENn signal (from STM32F103CBT6). This pin is connected to a
power switch ST890, which powers the board. This power switch features also a
current limitation to protect the PC in case of a short-circuit on board (more than
750 mA). STM32L4 Discovery kit for IoT node can be powered from the ST-LINK USB
connector CN7, but only ST-LINK circuit has the power before USB enumeration,
because the host PC only provides 100 mA to the board at that time. During the USB
enumeration, STM32L4 Discovery kit for IoT node asks for the 500 mA power to the
host PC. If the host is able to provide the required power, the enumeration finishes by a
“SetConfiguration” command and then, the power transistor ST890 is switched ON, the
red LED LD7 is turned ON, thus the STM32L4 Discovery kit for IoT node consumes up
to 500 mA current, but no more. If the host is not able to provide the requested current,
the enumeration fails. Therefore the ST890 remains OFF and the MCU part including
the extension board is not powered. As a consequence the red LED LD7 remains
turned OFF. In this case it is mandatory to use an external power supply.
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Figure 7. JP4: 5V_ST_LINK selection
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5V_ARD (see Figure 8) is the 7 to 12 V DC power from Arduino CN2 pin 8 (named VIN
on Arduino connector silkscreen). In this case, jumper of JP4 should be on pins 3 and 4
to select the 5V_ARD power source on silkscreen of JP4. In that case, the DC power
comes from the power supply through the Arduino Uno V3 battery shield (compatible
with Adafruit PowerBoost 500 Shield).
Figure 8. JP4: 5V_ARD selection from CN6 (VIN)
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5V_USB_FS (see Figure 9) is the DC power with 500 mA limitation from CN9, the USB
OTG FS micro-AB connector. In this case, jumper of JP4 should be on pins 5 and 6 to
select the 5V_USB_FS power source on silkscreen of JP4.
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Figure 9. JP4: 5V_USB_FS
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5V_VBAT (see Figure 10) is the DC power coming from external. In this case, jumper of
JP4 should be on pins 7 and 8 to select the 5V_VBAT power source on silkscreen of
JP4.
Figure 10. JP4: 5V_VBAT
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5V_USB_CHARGER (see Figure 11) is the DC power charger connected to the USB
ST-LINK (CN7). To select the 5V_USB_CHARGER power source on silkscreen of JP4,
the jumper of JP4 should be on pins 9 and 10. In this case, if the STM32L4 Discovery kit
for IoT node is powered by an external USB charger then the debug is not available. If
the PC is connected instead of the charger, the limitation is no longer effective and the
PC could be damaged.
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Hardware layout and configuration
Figure 11. JP4: 5V_USB_CHARGER selection
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Note:
If the board is powered by a USB charger, there is no USB enumeration, so the led LD7
remains OFF permanently and the board is not powered. In this specific case only, the
resistor R30 needs to be soldered, to allow the board to be powered anyway.
Caution:
Do not connect the PC to the ST-LINK (CN7) when R30 is soldered. The PC may be damaged
or the board may not be powered correctly.
The green LED LD5 is lit when the STM32L4 Discovery kit for IoT node is powered by the 5 V
correctly.
The power tree is showed in the Figure 12.
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Figure 12. Power tree
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7.5
Hardware layout and configuration
Programming/debugging when the power supply is not from
ST-LINK (5V_ST_LINK)
It is mandatory to power the board first using CN2 (VIN) or CN9 (USB_FS_OTG), then
connecting the USB cable to the PC. Proceeding this way ensures that the enumeration
succeeds thanks to the external power source.
The following power sequence procedure must be respected:
•
Connect the jumper JP4 on (5V_ARD) or (5V_USB_FS)
•
Connect the external power source to CN2 in case of an Arduino shield or to CN9 in
case of USB FS host interface
•
Check that the red LED LD5 is turned ON
•
Connect the PC to USB connector CN7
If this sequence is not respected, the board may be powered by VBUS first from ST-LINK, and
the following risks may be encountered:
7.6
•
If more than 500 mA current is needed by the board, the PC may be damaged or
current can be limited by PC. As a consequence the board is not powered correctly.
•
500 mA is requested at the enumeration, so there is a risk that the request is rejected
and enumeration does not succeed if the PC cannot provide such current.
Clock sources
Three clock sources are described below:
7.7
•
X1 which is the 8 MHz oscillator for STM32L475VG microcontroller. This clock is not
implemented in a basis configuration.
•
X2 which is the 32.768 KHz crystal for the STM32L475VG embedded RTC
•
X3 which is the 8 MHz clock from ST-LINK MCU for the STM32L475VG microcontroller.
Reset sources
The reset signal of the STM32L4 Discovery kit is active low and the reset sources includes:
7.8
•
A reset button B1
•
An Arduino Uno V3 shield board from CN2
•
An embedded ST-LINK/V2-1
USB OTG FS
The STM32L4 Discovery kit supports USB OTG FS communication via a USB Micro-AB
connector (CN9).
To do this the following components must be added by the users:
•
8 MHz crystal (at X1 position); ref: NX3225GD-8.00M
•
8.2 pF capacitor (0402 size) at C2 position
•
8.2 pF capacitor (0402 size) at C4 position
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•
0 ohm resistor (0402 size) at R5 position
•
0 ohm resistor (0402 size) at R7 position
The STM32L4 Discovery kit can be powered by the USB connectors at 5 V DC with 500 mA
current limitation.
A USB power switch (IC19) is also connected on VBUS and provides power to CN9. The
green LED LD9 is lit when either:
•
Power switch is ON and STM32L4 Discovery kit works as an USB host
•
VBUS is powered by another USB host when STM32L4 Discovery kit works as a USB
device.
The red LED LD8 is lit when an over-current occurs.
7.9
Quad-SPI NOR Flash memory
64-Mbit Quad-SPI NOR Flash memory (N25Q128A13EF840F from MICRON) is connected
to the Quad-SPI interface of the STM32L475VGT6.
7.10
Virtual COM port
The serial interface USART6 is directly available as a virtual COM port of the PC connected
to the ST-LINK/V2-1 USB connector CN7. The virtual COM port settings are configured as:
115200 b/s, 8 bits data, no parity, 1 stop bit, no flow control.
7.11
RF modules
Four RF interfaces are available on the STM32L4 Discovery kit for IoT node board:
7.11.1
•
Bluetooth (V4.1 compliant) SPBTLE-RF module
•
Sub-GHz (868 or 915 MHz) low-power-programmable RF module (SPSGRF-868 or
SPSGRF-915),
•
Wi-Fi module Inventek ISM43362-M3G-L44 (802.11 b/g/n compliant)
•
Dynamic NFC tag based on M24SR with its printed NFC antenna (double layer
inductive antenna etched on the PCB).
Bluetooth (V4.1 compliant) SPBTLE-RF module
The ST SPBTLE-RF module (M1) is implemented on top side of the STM32L4 Discovery kit
for IoT node board.
The SPBTLE-RF is an easy to use Bluetooth smart master/slave network processor module,
compliant with Bluetooth V4.1. The SPBTLE-RF B-Smart module supports multiple roles
simultaneously, and it can act at the same time as Bluetooth Smart sensor and hub device.
The entire Bluetooth Smart stack and protocol are embedded into the SPBTLE-RF B-Smart
module. The external host application processor, where the application resides, is
connected to the SPBTLE-RF B-Smart module through a standard SPI interface (SPI3 of
STM32L475VGT6).
The SPBTLE-RF B-Smart module provides a complete RF platform in a tiny form factor (foot
print of this module is 13.5 mm x 11.5 mm). Radio, antenna, high frequency and LPO
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Hardware layout and configuration
oscillators are integrated to offer a certified solution to optimize the time to market of the
final applications.
Figure 13. SPBTLE-RF module
The main features of the ST SPBTLE-RF module are listed below.
7.11.2
•
Bluetooth V4.1 compliant (supports master and slave modes, multiple roles supported
simultaneously
•
Embedded Bluetooth low-energy protocol stack (GAP, GATT, SM, L2CAP, LL, RFPHY)
•
Bluetooth low-energy profiles provided separately
•
Bluetooth radio performance:
•
Embedded ST BlueNRG-MS
•
Tx power: + 4 dBm
•
Host interface: SPI, IRQ, and RESET. On-field stack upgrading available via SPI.
•
Certification: CE qualified, FCC, IC modular approval certified, BQE qualified
•
On-board chip antenna
Sub-GHz low-power-programmable RF module
(SPSGRF-868 or SPSGRF-915)
Two modules are available depending on the frequency of the Sub-GHz module (M3). The
SPSGRF-868 and SPSGRF-195 are easy-to-use, low-power Sub-GHz modules based on
the SPIRIT1 RF transceiver, operating respectively in the 868 MHz SRD and 915 MHz ISM
bands.
The modules provide a complete RF platform in a tiny form factor (foot print of this module is
13.5 mm x 11.5 mm). The SPSGRF-915 is an FCC certified module (FCC ID: S9NSPSGRF)
and IC certified (IC 8976CSPSGRF), while the SPSGRF-868 is certified CE0051.
The modules include four programmable I/O pins and an SPI serial interface (SPI3 of
STM32L475VG).
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Figure 14. SPSGRF module
The main features of the ST SPSGRF module are listed below.
•
7.11.3
Programmable radio features:
–
Based on Sub-1GHz SPIRIT1 transceiver and integrated Balun (BALF-SPI-01D3)
–
Modulation schemes: 2-FSK, GFSK, MSK, GMSK, OOk and ASK
–
Air data rate from 1 to 500 kbps
–
On-board antenna
•
Programmable RF output power up to +11.6 dBm
•
Host interface: SPI
•
General I/O (up to 32 programmable I/O functions on 4 GPIO programmable module
pins
•
Two typical carrier frequency versions:
–
SPSGRF-868 with 868 MHz tuned antenna
–
SPSGRF-195 with 915 MHz tuned antenna
Wi-Fi module Inventek ISM43362-M3G-L44 (802.11 b/g/n)
The Inventek ISM43362-M3G-L44 module (M2) is implemented on top side of the STM32L4
Discovery kit for IoT node board. This module is an embedded (eS-WiFi) wireless Internet
Connectivity device. The Wi-Fi module hardware consists of an ARM® Cortex® -M3 STM32
host processor, an integrated antenna (or optional external antenna) and a Broadcom Wi-Fi
device. The module uses either a UART (UART3 of STM32L475VG) or an SPI (SPI3 of
STM32L475VG) interface. As default, an SPI interface is used, as the corresponding
firmware (for SPI capability) is downloaded on the Wi-Fi ISM43362-M3G-L44 module. The
Wi-Fi module requires no operating system and has a completely integrated TCP/IP stack
that only requires AT commands to establish connectivity for wireless product. The foot print
of this module is 14.5 mm x 30 mm.
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Figure 15. ISM43362-M3G-L44 module
The main features of the Inventek ISM43362-M3G-L44 module are:
•
Based on the Broadcom BCM43362 MAC/Baseband/Radio device
•
Supports Broadcom WICED SDK
•
CPU ARM® Cortex®-M3 32-bit RISC core from ST Microelectronics
•
IEEE 802.11n D7.0 -OFDM-72.2 Mbps -single stream w/20 MHz, Short GI
•
IEEE 802.11g (OFDM 54 Mbps)
•
IEEE 802.11b (DSSS 11 Mbps)
•
IEEE 802.11i (Security)
–
WPA (Wi-Fi Protected Access) –PSK/TKIP
–
WPA2 (Wi-Fi Protected Access 2)- AES/CCMP/802.1x Authentication
•
GPIO, 5 ADC (SPI interface utilizes ADC pins)
•
Power-saving mode allows the design of low-power applications
•
Lead Free Design which is compliant with ROHS requirements
•
EMI/EMC Metal Shield for best RF performance in noisy environments and to
accommodate for lower RF emissions/signature for easier FCC compliance.
•
FCC/CE compliance certification
On both MB1297 rev C and MB1297 rev D, the firmware revision inside the Wi-Fi module
must be: C3.5.2.3.BETA9. The Wi-Fi module maximum output power is limited to 9 dBm to
fulfill FCC/IC/CE requirements. A Wi-Fi output power higher than 9 dBm at the Wi-Fi
antenna is not allowed.
Note:
Since Wi-Fi and BLE modules are using the same frequency ISM band (2.4 to 2.485 GHz),
the simultaneous activity of both modules may affect the RF performances of Wi-Fi and/or
BLE (in term of range or throughput).
7.11.4
Dynamic NFC Tag based on M24SR with its printed NFC antenna
M24SR64-Y belongs to the ST25 family which includes all STMicroelectronics NFC/RFID
Tag and reader products. The M24SR64-Y device is a dynamic NFC/RFID Tag IC with a
dual interface. It embeds an EEPROM memory. It can be operated from an I2C interface or
by a 13.56 MHz RFID reader or by an NFC phone. The I2C interface uses a two-wire serial
interface, consisting of a bidirectional data line and a clock line. It behaves as a slave in the
I2C protocol.
The RF protocol is compatible with ISO/IEC 14443 Type A and NFC Forum Type 4 Tag.
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The main features of the M24SR64-Y are:
•
I2C interface (I2C2 of STM32L475VGT6). The two-wire I2C serial interface supports
1 MHz protocol.
•
Contactless interface:
•
–
NFC Forum Type 4 Tag
–
ISO/IEC 14443 Type A
–
106 Kbps data rate
–
Internal tuning capacitance: 25 pF
Memory:
–
8-Kbyte (64-kbit) EEPROM
–
Support of NDEF data structure
–
Data retention: 200 years
–
Write cycle endurance:
1 million Write cycles at 25 °C
600 K Write cycles at 85 °C
500 K Write cycles at 105 °C
7.12
•
Read up to 246 Bytes in a single command
•
Write up to 246 Bytes in a single command
•
7-Byte unique identifier (UID)
•
128-bit password protection
STMicroelectronics sensors
Several STMicroelectronics sensors are available on the STM32L4 Discovery kit for IoT
node board, they are listed below:
7.12.1
•
2 on-board ST-MEMS audio sensor omnidirectional digital microphones (MP34DT01)
•
Capacitive digital sensor for relative humidity and temperature (HTS221)
•
High-performance 3-axis magnetometer (LIS3MDL)
•
3D accelerometer and 3D gyroscope (LSM6DSL)
•
260-1260 hPa absolute digital output barometer (LPS22HB)
•
Time-of-Flight and gesture detection sensor (VL53L0X)
Two on-board ST-MEMS microphones (MP34DT01)
The MP34DT01 is an ultra-compact, low-power, omnidirectional, digital ST-MEMS
microphone built with a capacitive sensing element and an IC interface.
The sensing element, capable of detecting acoustic waves, is manufactured using a
specialized silicon micromachining process dedicated to produce audio sensors.
The IC interface is manufactured using a CMOS process that allows designing a dedicated
circuit able to provide a digital signal externally in PDM format.
The MP34DT01 has an acoustic overload point of 120 dBSPL with a 63 dB signal-to-noise
ratio and –26 dBFS sensitivity.
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On the STM32L4 Discovery kit for IoT node, there are two MP34DT01 microphones: one
with LR pulled to VDD and the second with LR pulled low. DFSDM1_CKOUT and
DFSDM1_DATIN2 are connected for both. In addition, both microphones are spaced at
21 mm apart for the beamforming algorithm to work. Indeed, several algorithm
configurations are available for the user to find the best trade off between audio output
quality and resource consumption. For more details refer to STEVAL-IHM038V1: 3-phase
BLDC/PMSM motor drive up to 50 W, suitable for fan controllers User manual (UM1697) on
the www.st.com website.
The MP34DT01 is available in a package HCLGA (3x4 x1 mm) 4LD, in a top-port design,
SMD-compliant, EMI-shielded package and it is guaranteed to operate over an extended
temperature range from -40°C to +85°C.
7.12.2
Capacitive digital sensor for relative humidity and
temperature (HTS221)
The HTS221 is an ultra-compact sensor for relative humidity and temperature. It includes a
sensing element and a mixed signal ASIC to provide the measurement information through
digital serial interfaces.
The sensing element consists of a polymer dielectric planar capacitor structure capable of
detecting relative humidity variations and it is manufactured using a dedicated ST process.
The HTS221 is available in a small top-holed cap land grid array (HLGA-6L (2 x 2 x 0.9
mm)) package guaranteed to operate over a temperature range from -40 °C to +120 °C.
The main features of the HTS221 are:
7.12.3
•
0 to 100% relative humidity range,
•
Low-power consumption: 2 μA @ 1 Hz ODR
•
Selectable ODR from 1 Hz to 12.5 Hz
•
High rH sensitivity: 0.004% rH/LSB
•
Humidity accuracy: ± 3.5% rH, 20 to +80% rH
•
Temperature accuracy: ± 0.5 °C,15 to +40 °C
•
Embedded 16-bit ADC
•
16-bit humidity and temperature output data
•
SPI and I2C interfaces. On the STM32L4 Discovery kit for IoT node, the I2C2 bus from
STM32L475VG is used.
•
Factory calibrated
•
Tiny 2 x 2 x 0.9 mm package
•
ECOPACK® compliant
High-performance 3-axis magnetometer (LIS3MDL)
The LIS3MDL is an ultra-low-power high-performance three-axis magnetic sensor.
The LIS3MDL has user-selectable full scales of ±4/ ±8/ ±12/±16 gauss.
The self-test capability allows the user to check the functionality of the sensor in the final
application.
The device may be configured to generate interrupt signals for magnetic field detection.
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The LIS3MDL includes an I2C serial bus interface, that supports standard and fast mode
(100 kHz and 400 kHz), and an SPI serial standard interface. On the STM32L4 Discovery
kit IoT node, the I2C2 bus from STM32L475VG is used.
The LIS3MDL is available in a small thin plastic land grid array package (LGA-12
(2.0x2.0x1.0 mm)) and is guaranteed to operate over an extended temperature range of -40
°C to +85 °C.
LIS3MDL is also ECOPACK®, RoHS and “Green” compliant.
7.12.4
3D accelerometer and 3D gyroscope (LSM6DSL)
The LSM6DSL is a system-in-package featuring a 3D digital accelerometer and a 3D digital
gyroscope performing at 0.65 mA in high-performance mode and enabling always-on
low-power features for an optimal motion experience for the consumer.
The event-detection interrupts enable efficient and reliable motion tracking and contextual
awareness, implementing hardware recognition of free-fall events, 6D orientation, click and
double-click sensing, activity or inactivity, and wake-up events.
The LSM6DSL supports main OS requirements, offering real, virtual and batch sensors with
4 Kbytes for dynamic data batching.
The LSM6DSL has been designed to implement features such as significant motion, tilt,
pedometer functions, step detector and step counter, time stamping and to support the data
acquisition of an external magnetometer with ironing correction (hard, soft).
The LSM6DSL has a full-scale acceleration range of ±2/±4/±8/±16 g and an angular rate
range of ±125/±245/±500/±1000/±2000 dps.
The registers embedded inside the LSM6DSL may be accessed through both the I2C and
SPI serial interfaces. On the STM32L4 Discovery kit for IoT node, the I2C2 bus from
STM32L475VGT6 is used.
The LSM6DSL is available in a plastic land grid array (LGA-14L (2.5x3x0.83mm)) package,
ECOPACK®, RoHS and “Green” compliant.
7.12.5
260-1260 hPa absolute digital output barometer (LPS22HB)
The absolute pressure-sensing device LPS22HB is an ultra-compact piezoresistive sensor
which functions as a digital output barometer.
The device comprises a sensing element and an IC interface which communicates from the
sensing element to the application through I2C or SPI. On the STM32L4 Discovery kit for
IoT node the I2C2 bus from the STM32L475VG is used.
The sensing element, which detects absolute pressure, consists of a suspended membrane
manufactured using a dedicated process developed by ST.
The LPS22HB is available in a full-mold, holed LGA package (HLGA). It is guaranteed to
operate over a temperature range extending from -40 °C to +85 °C. The package is holed to
allow external pressure to reach the sensing element.
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The main features of the LPS22HB are:
7.12.6
•
260 to 1260 hPa absolute pressure range
•
Current consumption down to 3 μA
•
High overpressure capability: 20x full-scale
•
Embedded temperature compensation
•
24-bit pressure data output
•
16-bit temperature data output
•
ODR from 1 Hz to 75 Hz
•
SPI and I²C interfaces
•
Embedded FIFO
•
Interrupt functions: Data Ready, FIFO flags, pressure thresholds
•
Supply voltage: 1.7 to 3.6 V
•
High shock survivability: 22,000 g
•
Small and thin package
•
ECOPACK® lead-free compliant
Time-of-Flight and gesture detection sensor (VL53L0X)
The VL53L0X is a new generation Time-of-Flight (ToF) laser-ranging module housed in a
small package, providing accurate distance measurement whatever the target reflectance
unlike conventional technologies. It can measure absolute distances up to 2 m, setting a
new benchmark in ranging performance levels, opening the door to various new
applications.
The VL53L0X integrates a leading-edge SPAD array (Single Photon Avalanche Diodes) and
embeds an ST second generation FlightSense™ patented technology.
The VL53L0X 940 nm VCSEL emitter (Vertical Cavity Surface-Emitting Laser), is totally
invisible to the human eye, coupled with internal physical infrared filters, it enables longer
ranging distance, higher immunity to ambient light and better robustness to cover-glass
optical cross-talk.
The main features of the VL53L0X are listed below.
•
•
•
Fully integrated miniature module:
–
940 nm Laser VCSEL
–
VCSEL driver
–
Ranging sensor with advanced embedded micro controller
–
4.4 x 2.4 x 1.0 mm size
Fast, accurate distance ranging:
–
Measures absolute range up to 2 m
–
Reported range is independent of the target reflectance
–
Operates in high infrared ambient light levels
–
Advanced embedded optical cross-talk compensation to simplify cover glass
selection
Eye safe:
–
Class 1 laser device compliant with the latest standard IEC 60825-1:2014 - 3rd
edition. The laser output will remain within Class 1 limits as long as the
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Hardware layout and configuration
UM2153
STMicroelectronics recommended device settings are used and the operating
conditions, specified in the STM32L4 datasheets, are respected. The laser output
power must not be increased by any means and no optics should be used with the
intention of focusing the laser beam. Figure 16 shows the warning label for
Class 1 laser products.
•
Easy integration:
–
No additional optics
–
Single power supply
–
I2C interface for device control and data transfer: I2C2 from STM32L475VGT6 is
used
–
Xshutdown (Reset) and interrupt GPIO
–
Programmable I2C address
Figure 16. Label for Class 1 laser products
7.13
STSAFE-A 100
The STSAFE-A100 is a highly secure solution that acts as a secure element, providing
authentication and data management services to a local or remote host. It consists of a full
turnkey solution with a secure operating system running on the latest generation of secure
microcontrollers. The STSAFE-A100 can be integrated in IoT (Internet of things) devices,
smart-home, smart-city and industrial applications, consumer electronics devices,
consumables and accessories. The STSAFE-A100 can be mounted on:
•
A device that authenticates to a remote host (IoT device case), the local host being
used as a pass-through to the remote server.
•
A peripheral that authenticates to a local host, for example games, mobile accessories
or consumables.
The STSAFE-A100 is not implemented on the MB1297 Rev C board.
7.14
Buttons and LEDs
The black button B1 located on top side is the reset of the microcontroller
STM32L475VGT6. Refer to the Figure 3: STM32L4 Discovery kit for IoT node (top view).
The blue button B1 located top side is available to be used as a digital input or as alternate
wake-up function.
When the button is depressed the logic state is “0”, otherwise the logic state is “1”.
Two green LEDs (LD1 and LD2), located on the top side are available for the user. To light a
LED a high logic state “1” should be written in the corresponding GPIO.
Table 2 gives the assignment of the control ports to the LED indicators.
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Hardware layout and configuration
Table 2. Button and LED control port
7.15
Reference
Color
Name
Comment
B1
black
Reset
-
B2
blue
Wake-up
LD1
green
LED1
PA5 (alternate with ARD.D13)
LD2
green
LED2
PB14
LD3
yellow
LED3 (Wi-Fi)
PC9, Wi-Fi activity
LD4
blue
LED4 (BLE)
PC9, Bluetooth activity
LD5
green
5V Power
LD6
Bicolor (red and green)
ST-LINK COM
green when communication
LD7
red
Fault Power
Current upper than 750 mA
LD8
red
VBUS OCRCR
LD9
green
VBUSOK
Alternate function Wake-up
5 V available
PE3
5 V USB available
I2C addresses of modules used on MB1297
The Table 3 displays the I2C addresses (read and write) for the modules that are connected
to the I2C2 bus.
Table 3. I2C addresses for each module
Modules
Description
SAD[6:0] + R/W
I2C write
address
I2C read
address
HTS221
Capacitive digital sensor for
relative humidity and temperature
1011111x
0xBE
0xBF
LIS3MDL
3-axis magnetometer
0011110x
0x3C
0x3D
LPS22HB
MEMS nano pressure sensor
1011101x
0xBA
0xBB
LSM6DSL
3D accelerometer and 3D
gyroscope
1101010x
0xD4
0xD5
VL53L0X
Time-of-Flight ranging and gesture
detection sensor
0101001x
0x52
0x53
M24SR64-Y
Dynamic NFC/RFID tag IC
1010110x
0xAC
0xAD
STSAFE-A100
-
0100000x
0x40
0x41
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Connectors
8
UM2153
Connectors
Nine connectors are implemented on the STM32L4 Discovery kit for IoT node:
•
CN1, CN2, CN3 and CN4 for Arduino Uno V3 connector
•
CN5: Tag connector
•
CN7: ST-LINK USB connector,
•
CN8: ST-LINK debug connector,
•
CN9: USB_OTG_FS connector,
•
CN10: PMOD connector.
In addition, one jumper JP5 is used for IDD measurements.
8.1
Arduino Uno V3 connectors
CN1, CN2, CN3 and CN4 are female connectors (SMD component devices) compatible with
Arduino Uno V3. Most shields designed for Arduino can fit to the STM32L4 Discovery kit for
IoT node.
Example connector references (see Figure 17):
•
CN4: Header 6X1_Female_SMD
•
CN3: Header 8X1_Female_SMD
•
CN2: Header 8X1_Female_SMD
•
CN1: Header 10X1_Female_SMD
Figure 17. Arduino connector (front view)
&1
&1
&1
&1
06Y9
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Connectors
Table 4. Arduino connector pinout
Connector
CN2
CN4
CN1
CN3
Pin
number
Pin name
Signal name
STM32
pin
Function
1
NC
-
-
-
2
IOREF
-
-
3.3 V reference
3
NRST
STM_NRST
NRST
Reset
4
3.3 V
-
-
3.3 V input/output
5
5V
-
-
5V
6
GND
-
-
GND
7
GND
-
-
GND
8
VIN
-
-
Power input
1
A0
ARD.A0-ADC
PC5
ADC
2
A1
ARD.A1-ADC
PC4
ADC
3
A2
ARD.A2-ADC
PC3
ADC
4
A3
ARD.A3-ADC
PC2
ADC
5
A4
ARD.A4-ADC
PC1
ADC / I2C3_SDA
6
A5
ARD.A5-ADC
PC0
ADC / I2C3_SCL
10
SCL/D15
ARD.D15-I2C1_SCL
PB8
I2C1_SCL
9
SDA/D14
ARD.D14-I2C1_SDA
PB9
I2C1_SDA
8
AVDD
VDDA
-
VDDA
7
GND
GND
-
Ground
6
SCK/D13
ARD.D13SPI1_SCK/LED1
PA5
SPI1_SCK / LED1
5
MISO/D12
ARD.D12-SPI1_MISO
PA6
SPI1_MISO
4
PWM/MOSI/
D11
ARD.D11SPI1_MISO/PWM
PA7
SPI1_MOSI /
TIMxx
3
PWM/CS/D1
0
ARD.D10SPI_SSN/PWM
PA2
SPI1_NSS /
TIM2_CH3
2
PWM/D9
ARD.D9-PWM
PA15
TIM2_CH1
1
D8
ARD.D8
PB2
GPIO
8
D7
ARD.D7
PA4
GPIO
7
PWM/D6
ARD.D6-PWM
PB1
TIM3_CH4
6
PWM/D5
ARD.D5-PWM
PB4
TIM3_CH1
5
D4
ARD.D4
PA3
TIMxx
4
PWM/D3
ARD.D3PWM/INT1_EXTI0
PB0
TIM3_CH3 / EXTI0
3
D2
ARD.D2-INT0_EXTI14
PD14
EXTI14
2
TX/D1
ARD.D1-UART4_TX
PA0
UART4_TX
1
RX/D0
ARD.D0-UART4_RX
PA1
UART4_RX
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Connectors
8.2
UM2153
TAG connector CN5
The TAG connector is implemented on the STM32L4 Discovery kit for IoT node. The TAG
connector is a 10-pin footprint supporting SWD mode, which is shared with the same signals
as for the ST-LINK.
The TC2050-IDC-NL cable is used to link ST-LINK and TAG connector on the STM32L4
Discovery kit for IoT node, so that the STM32L4 can be easily programmed and debugged
without any extra accessory.
Figure 18. TAG connector
Figure 19. TC2050-IDC-NL cable
Table 5. TAG connector pinout
Connector
CN5
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Pin
number
Pin name
Signal name
STM32L4
pin
1
3.3 V
3V3_ST_LINK
-
2
SWD
SYS_JTMS-SWDIO
PA13
3
GND
-
-
4
SWCLK
SYS_JTCK-SWCLK
PA14
5
GND
-
-
6
SWO
STLINK_JTDO_SWO
PB3
7
NC
-
-
-
8
NC
-
-
-
9
NC
-
-
-
10
NRST
STM_NRST
NRST
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Function
Power
Serial Wire Data
Input/Output
Ground
Serial Wire Clock
Ground
Serial Wire Output
RESET
UM2153
8.3
Connectors
ST-LINK/V2-1 USB Micro-B
The USB connector is used to connect the embedded ST-LINK/V2-1 to the PC to program
and debug the STM32L475VGT6 microcontroller.
Figure 20. USB Micro-B connector CN7 (front view)
Table 6. USB Micro-B connector
Connector
CN7
8.4
Pin
number
Pin name
Signal name
STM32L4
pin
1
VBUS
5V_USB_ST_LINK
-
5 V power and
detection
2
DM
USB_STLK_N
PA11
USB diff pair M
3
DP
USB_STLK_P
PA12
USB diff pair P
4
ID
USB_STLK_ID
-
USB Identification
5
GND
-
-
GND
Function
ST-LINK debug connector CN8
The ST-LINK debug connector is a 1x4-pin, 2.54-mm pitch male connector. It provides
access to the embedded SWJ-DP interface of the STM32F103CBT6 MCU. This SWJ-DP
interface is a combined JTAG and serial wire debug port that enables either a serial wire
debug or a JTAG probe, to be connected to the target.
Table 7. ST-LINK debug connector
Connector
CN8
Pin number
Signal name
STM32F103CBT6
Function
1
3V3_ST_LINK
VBAT, VDDA, VDD_1,
VDD_2, VDD_3
3.3 V voltage supply
2
STM_JTCK
PA14
3
GND
All GND pins
4
STM_JTMS
PA13
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TCK/SWCLK
GND
JTMS/SWDIO
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Connectors
8.5
UM2153
USB OTG FS micro-AB
Figure 21. USB OTG FS Micro-AB connector CN9 (front view)
Table 8. USB OTG FS Micro-AB pinout
Connector
CN9
Pin
number
Pin names
Signal name
STM32L4
pin
1
VBUS
USB_OTG_5V_VBUS
PA9
5 V power and
detection
2
DM
USB_OTG_FS_DM
PA11
USB diff pair M
3
DP
USB_OTG_FS_DP
PA12
USB diff pair P
4
ID
USB_OTG_FS_ID
PA10
USB identification
5
GND
-
-
Function
GND
Table 9. USB OTG FS power management
8.6
Pin number
Pin names
Signal names
STM32L4 pin
IC19-3
FAULTn
USB_OTG_FS_OVRCR_EXTI3
PE3
IC19-4
ENn
USB_OTG_FS_PWR_EN
PD12
Function
Over Current IT
USB Power enable
PMOD connector CN10
On STM32L4 Discovery kit for IoT node, the PMOD connector provides flexibility in small
form factor application. Based on PMOD Digilent standard popular in connectivity, the
PMOD connector is implemented in type 2A and 4A.
The related STM32L475VG I/Os for PMOD function are listed in Table 10. The PMOD
connector is 2x6 pins with 2.54 mm pitch and right angle female connector.
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Table 10. PMOD solder bridge configuration
Alternate configuration (UART)
Standard configuration (SPI)
DocID030118 Rev 3
STM32L4
pin
Solder bridge
configuration
Pin name
STM32L4
pin
Solder bridge
configuration
Pin name
PMOD pin
number
Pin
name
STM32L4 pin
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
PD3
SB14 open;
SB19 close
PMOD-UART2_
CTS/SPI2_MISO
PD5
SB14 close;
SB19 open
PMOD-UART2_
Tx/SPI2_CSN
1
7
PMOD-IRQ_EXTI2
PD2
PD5
SB15 open;
SB12 close
PMOD-UART2_
Tx/SPI2_CSN
PD4
SB15 close;
SB12 open
PMOD-UART2_
RTS/SPI2_MOSI
2
8
PMOD-RESET
PD0
PD6
SB18 open;
SB20 close
PMODUART2_RX
PD3
SB18 close;
SB20 open
PMOD-UART2_
CTS/SPI2_MISO
3
9
NC
NC
PD4
SB21 open;
SB16 close
PMOD-UART2_
RTS/SPI2_MOSI
PD1
SB21 close;
SB16 open
PMODSPI2_SCK
4
10
NC
NC
-
-
-
-
-
GND
5
11
GND
-
-
-
-
-
-
3.3 V
6
12
3.3 V
-
Connectors
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8.7
UM2153
Jumper JP5 for IDD measurements
The STM32 current measurement can be done on JP5. By default a jumper is placed on
JP5.
For current measurement configuration, the jumper on JP5 should be removed and
an amp-meters should be placed on JP5.
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STM32L4 Discovery kit for IoT node I/O assignment
Appendix A
STM32L4 Discovery kit for IoT node I/O
assignment
Table 11. STM32L4 Discovery kit for IoT node I/O assignment
Pin
No.
Pin Name
Feature / Comment
Signal or Label
1
PE2
GPIO_Output
M24SR64-Y-RF_DISABLE
2
PE3
GPIO_EXTI3
USB_OTG_OVRCR_EXTI3
3
PE4
GPIO_EXTI4
M24SR64-Y-GPO
4
PE5
GPIO_EXTI5
SPSGRF-915-GPIO3_EXTI5
5
PE6
GPIO_EXTI6
SPBTLE-RF-IRQ_EXTI6
6
VBAT
Voltage supply
VBAT
7
PC13
GPIO_EXTI13
BUTTON_EXTI13
8
PC14/OSC32_IN
RTC CLK
RCC_OSC32_IN
9
PC15/OSC32_OUT
RTC CLK
RCC_OSC32_OUT
10
VSS
GND
GND
11
VDD
3.3 V
VDD_MCU
12
PH0/OSC_IN
8MHz CLK
RCC_OSC_IN
13
PH1/OSC_OUT
8MHz CLK
RCC_OSC_OUT
14
NRST
reset
STM_NRST
15
PC0
ADC1_IN1
ARD.A5-ADC
16
PC1
ADC1_IN2
ARD.A4-ADC
17
PC2
ADC1_IN3
ARD.A3-ADC
18
PC3
ADC1_IN4
ARD.A2-ADC
19
VSSA
GND
GND
20
VREF-
GND
GND
21
VREF+
3.3 V
VDDA
22
VDDA
3.3 V
VDDA
23
PA0
UART4_TX
ARD.D1-UART4_TX
24
PA1
UART4_RX
ARD.D0-UART4_RX
25
PA2
TIM2_CH3
ARD.D10-SPI_SSN/PWM
26
PA3
GPIO_Output
ARD.D4
27
VSS
GND
VSS
28
VDD
3.3 V
VDD_MCU
29
PA4
GPIO_Output
ARD.D7
30
PA5
SPI1_SCK
ARD.D13-SPI1_SCK/LED1
31
PA6
SPI1_MISO
ARD.D12-SPI1_MISO
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Table 11. STM32L4 Discovery kit for IoT node I/O assignment (continued)
38/57
Pin
No.
Pin Name
Feature / Comment
Signal or Label
32
PA7
SPI1_MOSI
ARD.D11-SPI1_MOSI/PWM
33
PC4
ADC1_IN13
ARD.A1-ADC
34
PC5
ADC1_IN14
ARD.A0-ADC
35
PB0
TIM3_CH3
ARD.D3-PWM/INT1_EXTI0
36
PB1
TIM3_CH4
ARD.D6-PWM
37
PB2
GPIO_Output
ARD.D8
38
PE7
MEMS microphone
DFSDM1_DATIN2
39
PE8
GPIO_Output
ISM43362-RST
40
PE9
MEMS microphone
DFSDM1_CKOUT
41
PE10
QSPI NOR Flash memory
QUADSPI_CLK
42
PE11
QSPI NOR Flash memory
QUADSPI_NCS
43
PE12
QSPI NOR Flash memory
QUADSPI_BK1_IO0
44
PE13
QSPI NOR Flash memory
QUADSPI_BK1_IO1
45
PE14
QSPI NOR Flash memory
QUADSPI_BK1_IO2
46
PE15
QSPI NOR Flash memory
QUADSPI_BK1_IO3
47
PB10
I2C2_SCL
INTERNAL-I2C2_SCL
48
PB11
I2C2_SDA
INTERNAL-I2C2_SDA
49
VSS
GND
VSS
50
VDD
3.3 V
VDD_MCU
51
PB12
GPIO_Output
ISM43362-BOOT0
52
PB13
GPIO_Output
ISM43362-WAKEUP
53
PB14
GPIO_Output
LED2
54
PB15
GPIO_Output
SPSGRF-915-SDN
55
PD8
USART3_TX
INTERNAL-UART3_TX
56
PD9
USART3_RX
INTERNAL-UART3_RX
57
PD10
GPIO_EXTI10
LPS22HB_INT_DRDY_EXTI10
58
PD11
GPIO_EXTI11
LSM6DSL_INT1_EXTI11
59
PD12
GPIO_EXTI12
USB_OTG_FS_PWR_EN
60
PD13
GPIO_Output
SPBTLE-RF-SPI3_CSN
61
PD14
GPIO_EXTI14
ARD.D2-INT0_EXTI14
62
PD15
GPIO_EXTI15
HTS221_DRDY_EXTI15
63
PC6
GPIO_Output
VL53L0X_XSHUT
64
PC7
GPIO_EXTI7
VL53L0X_GPIO1_EXTI7
65
PC8
GPIO_EXTI8
LIS3MDL_DRDY_EXTI8
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STM32L4 Discovery kit for IoT node I/O assignment
Table 11. STM32L4 Discovery kit for IoT node I/O assignment (continued)
Pin
No.
Pin Name
Feature / Comment
Signal or Label
66
PC9
GPIO_EXTI9
LED3 (WIFI) & LED4 (BLE)
67
PA8
GPIO_Output
SPBTLE-RF-RST
68
PA9
USB_OTG
USB_OTG_FS_VBUS
69
PA10
USB_OTG
USB_OTG_FS_ID
70
PA11
USB_OTG
USB_OTG_FS_DM
71
PA12
USB_OTG
USB_OTG_FS_DP
72
PA13
ST-LINK
SYS_JTMS-SWDIO
73
VDDUSB
3.3 V
VDD_MCU
74
VSS
GND
GND
75
VDD
3.3 V
VDD_MCU
76
PA14
ST-LINK
SYS_JTCK-SWCLK
77
PA15
TIM2_CH1
ARD.D9-PWM
78
PC10
SPI3_SCK
INTERNAL-SPI3_SCK
79
PC11
SPI3_MISO
INTERNAL-SPI3_MISO
80
PC12
SPI3_MOSI
INTERNAL-SPI3_MOSI
81
PD0
GPIO_Output
PMOD-RESET
82
PD1
GPIO_Output
PMOD-SPI2_SCK
83
PD2
GPIO_EXTI2
PMOD-IRQ_EXTI2
84
PD3
USART2_CTS
PMOD-UART2_CTS/SPI2_MISO
85
PD4
USART2_RTS
PMOD-UART2_RTS/SPI2_MOSI
86
PD5
USART2_TX
PMOD-UART2_TX/SPI2_CSN
87
PD6
USART2_RX
PMOD-UART2_RX
88
PD7
GPIO_Output
STSAFE-A100-RESET
89
PB3
ST-LINK
SYS_JTDO-SWO
90
PB4
TIM3_CH1
ARD.D5-PWM
91
PB5
GPIO_Output
SPSGRF-915-SPI3_CSN
92
PB6
USART1_TX
ST-LINK-UART1_TX
93
PB7
USART1_RX
ST-LINK-UART1_RX
94
BOOT0
Boot
BOOT0
95
PB8
I2C1_SCL
ARD.D15-I2C1_SCL
96
PB9
I2C1_SDA
ARD.D14-I2C1_SDA
97
PE0
GPIO_Output
ISM43362-SPI3_CSN
98
PE1
GPIO_EXTI1
ISM43362-DRDY_EXTI1
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Table 11. STM32L4 Discovery kit for IoT node I/O assignment (continued)
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Pin
No.
Pin Name
Feature / Comment
Signal or Label
99
VSS
GND
GND
100
VDD
3.3 V
VDD_MCU
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Schematics
Appendix B
Schematics
This section provides the design schematics for the STM32L4 Discovery kit for IoT node:
•
Overall schematics for the B-L475E-IOT01A, see Figure 22
•
STM32L475VG MCU, see Figure 23 and Figure 24
•
USB OTG FS, see Figure 25
•
RF Module, see Figure 26
•
ST-MEMS sensors, see Figure 27
•
NFC and STSAFE Part, see Figure 28
•
Power supply, see Figure 29
•
Arduino Uno V3 connector, see Figure 30
•
Peripherals, see Figure 31
•
ST-LINK with support of SWD only, see Figure 32
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RF Modules Page 5/11
MB1297_RF_Module.SchDoc
INTERNAL-SPI3_SCK
INTERNAL-SPI3_MOSI
INTERNAL-SPI3_MISO
SPSGRF-915-SPI3_CSN
SPSGRF-915-GPIO3_EXTI5
SPSGRF-915-SDN
SPBTLE-RF-SPI3_CSN
SPBTLE-RF-RST
SPBTLE-RF-IRQ_EXTI6
ISM43362-SPI3_CSN
ISM43362-RST
ISM43362-WAKEUP
ISM43362-BOOT0
ISM43362-DRDY_EXTI1
INTERNAL-UART3_RX
INTERNAL-UART3_TX
QUADSPI_NCS
QUADSPI_CLK
QUADSPI_BK1_IO0
QUADSPI_BK1_IO1
QUADSPI_BK1_IO2
QUADSPI_BK1_IO3
Arduino Connectors Page 9/11
MB1297_Arduino.SchDoc
MCU1 Page 2/11
MB1297_MCU1.SchDoc
INTERNAL-SPI3_SCK
INTERNAL-SPI3_MOSI
INTERNAL-SPI3_MISO
SPSGRF-915-SPI3_CSN
SPSGRF-915-GPIO3_EXTI5
SPSGRF-915-SDN
SPBTLE-RF-SPI3_CSN
SPBTLE-RF-RST
SPBTLE-RF-IRQ_EXTI6
ISM43362-SPI3_CSN
ISM43362-RST
ISM43362-WAKEUP
ISM43362-BOOT0
ISM43362-DRDY_EXTI1
INTERNAL-UART3_RX
INTERNAL-UART3_TX
QUADSPI_NCS
QUADSPI_CLK
QUADSPI_BK1_IO0
QUADSPI_BK1_IO1
QUADSPI_BK1_IO2
QUADSPI_BK1_IO3
ARD.D15-I2C1_SCL
ARD.D14-I2C1_SDA
ARD.D13-SPI1_SCK/LED1
ARD.D12-SPI1_MISO
ARD.D11-SPI1_MOSI/PWM
ARD.D10-SPI_SSN/PWM
ARD.D9-PWM
ARD.D8
ARD.D7
ARD.D6-PWM
ARD.D5-PWM
ARD.D4
ARD.D3-PWM/INT1_EXTI0
ARD.D2-INT0_EXTI14
ARD.D1-UART4_TX
ARD.D0-UART4_RX
ARD.A5-ADC
ARD.A4-ADC
ARD.A3-ADC
ARD.A2-ADC
ARD.A1-ADC
ARD.A0-ADC
DocID030118 Rev 3
M24SR64-Y-GPO
M24SR64-Y-RF_DISABLE
STSAFE-A100-RESET
MEMS Part Page 6/11
MB1297_MEMS.SchDoc
INTERNAL-I2C2_SCL
INTERNAL-I2C2_SDA
LSM6DSL_INT1_EXTI11
LSM3MDL_DRDY_EXTI8
LPS22HB_INT_DRDY_EXTI10
HTS221_DRDY_EXTI15
VL53L0X_GPIO1_EXTI7
VL53L0X_XSHUT
DFSDM1_CKOUT
DFSDM1_DATIN2
ARD.A5-ADC
ARD.A4-ADC
ARD.A3-ADC
ARD.A2-ADC
ARD.A1-ADC
ARD.A0-ADC
Peripherals Page 10/11
MB1297_Peripherals.SchDoc
INTERNAL-I2C2_SCL
INTERNAL-I2C2_SDA
M24SR64-Y-GPO
LED2
M24SR64-Y-RF_DISABLE
LED3(WIFI) & LED4(BLE)
STSAFE-A100-RESET
BUTTON_EXTI13
LSM6DSL_INT1_EXTI11
PMOD-UART2_RX
LSM3MDL_DRDY_EXTI8
PMOD-UART2_TX/SPI2_CSN
LPS22HB_INT_DRDY_EXTI10 PMOD-UART2_RTS/SPI2_MOSI
HTS221_DRDY_EXTI15
PMOD-UART2_CTS/SPI2_MISO
VL53L0X_GPIO1_EXTI7
PMOD-SPI2_SCK
VL53L0X_XSHUT
PMOD-IRQ_EXTI2
PMOD-RESET
USB_OTG_FS_OVRCR_EXTI3
USB_OTG_FS_PWR_EN
USB_OTG_FS_VBUS
USB_OTG_FS_DM
USB_OTG_FS_DP
USB_OTG_FS_ID
ARD.D13-SPI1_SCK/LED1
STM_NRST
LED2
LED3(WIFI) & LED4(BLE)
BUTTON_EXTI13
PMOD-UART2_RX
PMOD-UART2_TX/SPI2_CSN
PMOD-UART2_RTS/SPI2_MOSI
PMOD-UART2_CTS/SPI2_MISO
PMOD-SPI2_SCK
PMOD-IRQ_EXTI2
PMOD-RESET
STLink V2.1 Page 11/11
MB1297_STLINK_V2-1.SCHDOC
DFSDM1_CKOUT
DFSDM1_DATIN2
SYS_JTCK-SWCLK
SYS_JTMS-SWDIO
SYS_JTDO-SWO
ST-LINK-UART1_RX
ST-LINK-UART1_TX
STM_NRST
USB_OTG_FS Page 4/11
MB1297_USB_OTG_FS.SchDoc
USB_OTG_FS_OVRCR_EXTI3
USB_OTG_FS_PWR_EN
USB_OTG_FS_VBUS
USB_OTG_FS_DM
USB_OTG_FS_DP
USB_OTG_FS_ID
ARD.D15-I2C1_SCL
ARD.D14-I2C1_SDA
ARD.D13-SPI1_SCK/LED1
ARD.D12-SPI1_MISO
ARD.D11-SPI1_MOSI/PWM
ARD.D10-SPI_SSN/PWM
ARD.D9-PWM
ARD.D8
ARD.D7
ARD.D6-PWM
ARD.D5-PWM
ARD.D4
ARD.D3-PWM/INT1_EXTI0
ARD.D2-INT0_EXTI14
ARD.D1-UART4_TX
ARD.D0-UART4_RX
STM_NRST
NFC & ST-SAFE Page 7/11
MB1297_NFC_SAFE.SchDoc
INTERNAL-I2C2_SCL
INTERNAL-I2C2_SDA
Schematics
42/57
Figure 22. STM32L4 Discovery kit for IoT node (top)
SYS_JTCK-SWCLK
SYS_JTMS-SWDIO
SYS_JTDO-SWO
ST-LINK-UART1_RX
ST-LINK-UART1_TX
STM_NRST
Power part Page 8/11
MB1297_POWER.SchDoc
MB1297_MCU2.SchDoc
MCU2 Page 3/11
Designed by DiZiC
MB1297
Title: IOT Node Discovery Kit
Project: Project
Size: A4
Reference: MB1297
Date: 29/01/2017
Revision: D
Sheet: 1 of 11
UM2153
UM2153
Figure 23. STM32L475VG microcontroller
U1A
USB_OTG_FS_DM
USB_OTG_FS_DP
USB_N
USB_P
ARD.D1-UART4_TX
ARD.D0-UART4_RX
ARD.D10-SPI_SSN/PWM
ARD.D4
ARD.D7
ARD.D13-SPI1_SCK/LED1
ARD.D12-SPI1_MISO
ARD.D11-SPI1_MOSI/PWM
SPBTLE-RF-RST
USB_OTG_FS_VBUS
USB_OTG_FS_ID
SYS_JTMS-SWDIO
SYS_JTCK-SWCLK
ARD.D9-PWM
ARD.A5-ADC
ARD.A4-ADC
ARD.A3-ADC
ARD.A2-ADC
ARD.A1-ADC
ARD.A0-ADC
VL53L0X_XSHUT
VL53L0X_GPIO1_EXTI7
23
24
25
26
29
30
31
32
67
68
69
70
71
72
76
77
15
16
17
18
33
34
63
64
PA0/WKUP1
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA12
PA13/SWDIO
PA14/SWCLK
PA15
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
35
36
37
89
90
91
92
93
95
96
47
48
51
52
53
54
PB0
PB1
PB2
PB3/SWO
PB4
PB5
PB6
PB7
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PB15
65
66
78
79
80
7
8
9
PC8
PC9
PC10
PC11
PC12
PC13/WKUP2
PC14-OSC32_IN
PC15-OSC32_OUT
ARD.D3-PWM/INT1_EXTI0
ARD.D6-PWM
ARD.D8
SYS_JTDO-SWO
ARD.D5-PWM
SPSGRF-915-SPI3_CSN
ST-LINK-UART1_TX
ST-LINK-UART1_RX
3V3
R8
2K2
R9
2K2
ARD.D15-I2C1_SCL
ARD.D14-I2C1_SDA
INTERNAL-I2C2_SCL
INTERNAL-I2C2_SDA
ISM43362-BOOT0
ISM43362-WAKEUP
LED2
SPSGRF-915-SDN
R10
2K2
R11
2K2
LSM3MDL_DRDY_EXTI8
LED3(WIFI) & LED4(BLE)
INTERNAL-SPI3_SCK
INTERNAL-SPI3_MISO
INTERNAL-SPI3_MOSI
BUTTON_EXTI13
3V3
C14
R12
GND
STM32L475VGTx
DocID030118 Rev 3
0R
5.1pF
X2
NX3215SA-32.768K
C15
GND
5.1pF
U1B
PMOD-RESET
PMOD-SPI2_SCK
PMOD-IRQ_EXTI2
PMOD-UART2_CTS/SPI2_MISO
PMOD-UART2_RTS/SPI2_MOSI
PMOD-UART2_TX/SPI2_CSN
PMOD-UART2_RX
STSAFE-A100-RESET
INTERNAL-UART3_TX
INTERNAL-UART3_RX
LPS22HB_INT_DRDY_EXTI10
LSM6DSL_INT1_EXTI11
USB_OTG_FS_PWR_EN
SPBTLE-RF-SPI3_CSN
ARD.D2-INT0_EXTI14
HTS221_DRDY_EXTI15
81
82
83
84
85
86
87
88
55
56
57
58
59
60
61
62
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PE0
PE1
PE2
PE3
PE4
PE5
PE6
PE7
PE8
PE9
PE10
PE11
PE12
PE13
PE14
PE15
97
98
1
2
3
4
5
38
39
40
41
42
43
44
45
46
ISM43362-SPI3_CSN
ISM43362-DRDY_EXTI1
M24SR64-Y-RF_DISABLE
USB_OTG_FS_OVRCR_EXTI3
M24SR64-Y-GPO
SPSGRF-915-GPIO3_EXTI5
SPBTLE-RF-IRQ_EXTI6
DFSDM1_DATIN2
ISM43362-RST
DFSDM1_CKOUT
QUADSPI_CLK
QUADSPI_NCS
QUADSPI_BK1_IO0
QUADSPI_BK1_IO1
QUADSPI_BK1_IO2
QUADSPI_BK1_IO3
STM32L475VGTx
Designed by DiZiC
Title: STM32L475 - 1/2
Project:
Size: A4
Reference: MB1297
Revision: D
Sheet: 2 of 11
43/57
Schematics
Date: 29/01/2017
Schematics
44/57
Figure 24. STM32L475VG microcontroller
STM_NRST
C3
GND
100nF
Not Fitted (8.2pF)
C2
Not Fitted (0R)
R5
1
2
GND
X1
Not Fitted (NX3225GD-8.00M)
C4
U1C
12
13
R7
GND
Not Fitted (8.2pF) Not Fitted (0R)
VDDA
DocID030118 Rev 3
VDD_MCU
L1
FCM1608KF-601T03
C5
100nF
GND
C6
1uF
GND
Close VBAT
SB17
VDD_MCU
C8
1uF
22
21
6
50
75
100
28
11
PH0/PF0-OSC_IN
PH1/PF1-OSC_OUT
VDDA
VREF+
VBAT
VDD
VDD
VDD
VDD
VDD
NRST
BOOT0
VSSA
VREFVDDUSB
VSS
VSS
VSS
VSS
VSS
14
94
SB9
Open
19
20
VDD_MCU
SB13
Close
GND
GND
73
GND
VDD_MCU
74
10
27
49
99
C7
100nF
GND
VDD_MCU STM32L475VGTx
GND
GND
VDD_MCU
C9
100nF
C10
100nF
C11
100nF
C12
100nF
C13
100nF
GND
Designed by DiZiC
Title: STM32L475 - 2/2
Project: Project
Size: A4
Reference: MB1297
Date: 29/01/2017
Revision: D
Sheet: 3 of 11
UM2153
UM2153
Figure 25. USB OTG FS
VBUS OK LED
VBUS OVRCR LED
R56
1K
R55
330R
LD8
RED
LED
3V3
3
3V3
R57
R58
47K
2
R59
100K
5V_USB_FS
3V3
Q2
BSR14
1
47K
USB_OTG_FS_OVRCR_EXTI3
LD9
GREEN
LED
GND
3V3
GND
USB_OTG_FS_PWR_EN
0603
R61
0R
U19
2
5
4
GND FAULT
IN
OUT
EN
3
1
CN9
STMPS2141STR
1
2
3
4
5
C66
4.7uF
DocID030118 Rev 3
GND
6
7
8
9
10
VBUS
DM
DP
ID
GND
Shield
Shield
Shield
Shield
EXP
USB_Micro-AB receptacle
R62
47K
GND
0603
5V
475900001
GND
USB_OTG_FS_VBUS
USB_OTG_FS_DM
USB_OTG_FS_DP
USB_OTG_FS_ID
USB_N
USB_P
U20
B3
C3
D3
A2
B2
Vbus
D+out
D-out
Dz
Pup
ID
D+in
D-in
Pd1
Pd2
GND
A3
C1
D1
B1
C2
D2
GND
EMIF02-USB03F2
ESD PROTECTION SHOULD BE CLOSE TO THE CONNECTOR
Designed by DiZiC
Title: USB_OTG_FS
Project:
Size: A4
Reference: MB1297
Revision: D
Sheet: 4 of 11
45/57
Schematics
Date: 29/01/2017
M1
11
SPBTLE-RF-RST
BT_RESET
GND
5
C43
100nF
3
GND
GND
1
6
GND
BT Module
3V3_WIFI
1
2
3
4
5
6
7
8
9
10
11
12
13
GND
GND
C75
2.2uF
1
2
3
4
SPSGRF-915-GPIO3_EXTI5
C45
100nF
TP6
GND
TP1
TP2
TP3
TP4
TP5
INTERNAL-SPI3_MOSI
INTERNAL-SPI3_MISO
INTERNAL-SPI3_SCK
ISM43362-SPI3_CSN
GPIO (3)
GPIO (2)
GPIO (1)
GPIO (0)
SDN
C44
100nF
GND
5
Vin
V
Vi
n
R26
47K
6
GND
3V3
GND
3V3_WIFI
SPSGRF
ISM43362-DRDY_EXTI1
C76
2.2uF
35
34
33
32
31
30
29
28
27
26
25
24
23
GND
GND
C47
100nF
GND
GND
GND
ISM43362-WAKEUP
U11
3V3
CS#
VCC
SCLK
SI/SIO0 GND
SO/SIO1
WP#/SIO2
RESET#/SOI3
MX25R6435F
8
4
GND
C48
100nF
GND
INTERNAL-UART3_TX
INTERNAL-UART3_RX
ISM43362-BOOT0
GND
OUT
3V3_WIFI
R64
R65
3V3_WIFI
C50
10uF
Not Fitted (10K)
3V3_WIFI
3
0603
C49
10uF
IN
2
1
GND
LT1963EST-3.3
U12
5V
Not Fitted (10K)
R66
ISM43362-RST
Not Fitted (10K)
1
6
5
2
3
7
QUADSPI_NCS
QUADSPI_CLK
QUADSPI_BK1_IO0
QUADSPI_BK1_IO1
QUADSPI_BK1_IO2
QUADSPI_BK1_IO3
0603
DocID030118 Rev 3
11
SPSGRF-915-SDN
SPI_CLK
SPI_MISO
SPI_MOSI
SPI_CS
GND
GND
RSTN
BOOT0
RES
RES
RES
CFG1
CFG0
GPIO4
GPIO3
GPIO2
GPIO1
GPIO0
14
15
16
17
18
19
20
21
22
7
8
9
10
INTERNAL-SPI3_SCK
INTERNAL-SPI3_MISO
INTERNAL-SPI3_MOSI
SPSGRF-915-SPI3_CSN
3V3
GND
VDD
GND
TMS
TCK
TDI
TDO
TRSTN
ADC4/MOSI
ADC3/MISO
ADC2/SCK
ADC1/SSN
ADC0/DATARDY
VDD
VBAT
WKUP
GND
DP
DM
GND
RX
TX
M3
ISM43362-M3G-L44
M2
44
43
42
41
40
39
38
37
36
4
2
SPBTLE-RF-IRQ_EXTI6
3V3
SPI_SCLK
Vin
V
Vi
n
SPI_MISO
SPI_MOSI
SPI_CS
ANA_TEST 0
SPI_IRQ
GPIO2 EXT_LPCLK
GND
GND
GND
GND
GND
GND
GND
GND
GND
7
8
9
10
INTERNAL-SPI3_SCK
INTERNAL-SPI3_MISO
INTERNAL-SPI3_MOSI
SPBTLE-RF-SPI3_CSN
Schematics
46/57
Figure 26. RF module
GND
GND
GND
Designed by DiZiC
Title: RF Modules
Project:
Size: A4
Reference: MB1297
Date: 29/01/2017
Revision: D
Sheet: 5 of 11
UM2153
UM2153
Figure 27. ST-MEMS sensors
Microphone MEMS
U2
R13
U3
14
INTERNAL-I2C2_SDA
GND
3V3
1
12
4
9
LSM6DSL_INT1_EXTI11
6
SCL
VDD
SDA
VDDIO
INT1
INT2
GND
nc
nc
SCx
SDx
GND
LSM6DSL
GND Read=11010101 (D5h)
Write=11010100 (D4h)
DOUT
3V3
1
2
5
GND
Microphone MEMS
U10
10
11
3
C18
C19
C20
4.7uF 100nF 100nF
GND
GND
CLK
4
DOUT
VDD
LR
GND
GND
R67
3V3
1
2
5
GND
GND
3V3
3V3
INTERNAL-I2C2_SCL
INTERNAL-I2C2_SDA
LPS22HB_INT_DRDY_EXTI10
C23
GND
GND
CS
VDD_IO
SCL/SPC
VDD
SDA/SDI/SDO RES
SDO/SA0
GND
INT_DRDY GND
LPS22HB
Read=10111011 (BBh)
Write=10111010 (BAh)
C24
C25
GND
C26
R14
10K
R15
10K
VL53L0X
Read=01010011(53h)
Write=01010010(52h)
100nF 100nF
GND
0603
2
3
4
6
12
C21
C22
4.7uF 100nF
GND
GND
C27
C28
GND
GND
3V3
3V3
U7
6
2
4
5
7
5
7
8
VL53L0X_XSHUT
VL53L0X_GPIO1_EXTI7
100nF 1uF
LIS3MDL
Read=00111101 (3Dh)
Write=00111100 (3Ch)
3V3
3V3
1
11
AVDD_VCSEL
SCL
AVDD
SDA
AVSS_VCSEL
GND
XSHUT
GND2
GPIO1
GND3
DNC
GND4
10
9
INTERNAL-I2C2_SCL
INTERNAL-I2C2_SDA
1
10
3
8
9
3V3
U6
2
4
INTERNAL-I2C2_SCL
INTERNAL-I2C2_SDA
C29
3V3
C31
C30
100nF 4.7uF
GND
GND
HTS221_DRDY_EXTI15
100nF
GND
3V3
SCL/SPC VDD
SDA/SDI/SDO
6
1
0603
LSM3MDL_DRDY_EXTI8
SCL/SPC VDD_IO
SDA/SDI/SDOVDD
SDO/SA1
C1
CS
GND
INT
Res
DRDY
Res
6
5
4
3
2
12
0603
DocID030118 Rev 3
3V3
10uF
GND
GND
U5
INTERNAL-I2C2_SCL
INTERNAL-I2C2_SDA
C46
3
2
7
U4
1
11
9
10
7
8
3V3
C74
MP34DT01-M
10uF
GND
10K
100nF
GND
C16
C17
MP34DT01-M
5
SDO/SA0
CS
4
0R
VDD
LR
GND
8
0603
13
INTERNAL-I2C2_SCL
0R
CLK
0603
DFSDM1_DATIN2
3V3
R6
0603
3V3
3
100nF
DFSDM1_CKOUT
CS
3
DRDY
GND
HTS221
Read=10111111 (BFh)
Write=10111110 (BEh)
5
2.2uF 100nF
GND
GND
GND
Designed by DiZiC
Title: MEMS Sensors
Project:
Size: A4
Reference: MB1297
Revision: D
Sheet: 6 of 11
47/57
Schematics
Date: 29/01/2017
Schematics
48/57
Figure 28. NFC and STSAFE part
3V3
742792042
C67
100pF
U8
6
5
INTERNAL-I2C2_SCL
INTERNAL-I2C2_SDA
7
1
M24SR64-Y-GPO
M24SR64-Y-RF_DISABLE
R1
30K
R4
20K
SCL
SDA
VCC
VSS
GPO
RFDIS
AC0
AC1
8
4
GND
GND
2
3
GND
10pF
M24SR64-Y
Read=10101101(ADh)
Write=10101100(ACh)
DocID030118 Rev 3
U9
STSAFE-A100-RESET
1
SCL
SDA
PCB Antenna 15x15mm
See ANT7-T-M24SR-MB1255
GND
C69
Not Fitted
C71
C72
Not Fitted
3V3
7
5
L2
GND
C53
GND
INTERNAL-I2C2_SCL
INTERNAL-I2C2_SDA
C32
100nF
GND
10pF
GND
C68
1uF
GND
ANT
C70
Not Fitted
3V3
VCC
NC
NC
NC
/RESET
GND
2
C33
100nF
3
6
8
4
GND
GND
STSAFE-A100 (Not Fitted)
Read=01000001(41h)
Write=01000000(40h)
Designed by DiZiC
Title: NFC & ST-SAFE Part
Project:
Size: A4
Reference: MB1297
Date: 12/03/2017
Revision: D
Sheet: 7 of 11
UM2153
UM2153
Figure 29. Power supply
5V PWR SELECTION FROM EXTERNAL SOURCES
5V_ST_LINK
USB_OTG_FS Page4/11
+5V
5V
5V_ARD
1
3
5
5V_VBAT 79
STLINK_V2-1 Page11/11
5V_USB_FS
JP4
R25
2
4
6
8
10
HEADER_2X5
5V
MEMS Page6/11
U13 LD1117S50TR
2
Vin
Vout
4
Tab
3
VIN
0603
From Arduino power pin
C38
10uF
GND
LDO_3V3
GND
GND
Vout
Tab
2
4
C41
10uF
C42
100nF
VDD_MCU
JP5
Jumper to measure IDD of the MCU
0603
Peripherals Page10/11
Vin
3V3
Close
SB4
HW2
Cannot
open
file
C:\Data
SHUNT_BK
IDD
1
0603
3
C40
10uF
Gnd
U14
LD1117S33TR
3V3
VDD_MCU
3V3
3V3
5V_ARD
VDDA
5V
VIN
5V
GND
MCU1&2 Page2&3/11
5V_ARD
C39
10uF
NFC_SAFE Page7/11
3V3 PWR
3V3 / 800mA
ARDUINO Page9/11
GND
JP7
HW4
Cannot
open
file
C:\Data
SHUNT_BK
0603
DocID030118 Rev 3
RF_Module Page5/11
3V3
3V3
GND
GND
5V INPUT PWR FROM ARDUINO
5V / 800mA
5V
POWER SUPPLY Page8/11
GND
JP6
HW3
Cannot
open
file
C:\Data
SHUNT_BK
Gnd
3V3
GND
1
5V_USB_FS
5V_ARD
5V_USB_CHARGER
5V_USB_ST_LINK
3V3
5V
5V_USB_FS
5V_USB_CHARGER
GND PROBE
LD5
LED
GREEN
330R
HW1
Cannot
open
file
C:\Data
SHUNT_BK
GND
GND
GND
Open solder bridge if Discovery is supplied
from +3V3 of extension connector
Designed by DiZiC
Title: POWER SUPPLY
Project:
Size: A4
Reference: MB1297
Revision: D
Sheet: 8 of 11
49/57
Schematics
Date: 29/01/2017
Schematics
50/57
Figure 30. Arduino Uno V3 connector
ARDUINO UNO connector
CN1
5V_ARD
STM_NRST
3V3
5V
GND
WARNING voltage applied to VIN <11.5V
VIN
CN2
1
2
3
4
5
6
7
8
IOREF
NRST
3V3
5V
GND
GND
VIN
POWER
R3 1k
SCL/D15 10
SDA/D14
9
8
AVDD
GND 7
SCK/D13
6
MISO/D12
5
PWM/MOSI/D11
4
PWM/CS/D10
3
PWM/D9
2
D8
1
VDDA
ARD.D15-I2C1_SCL
ARD.D14-I2C1_SDA
R2
GND
0R
ARD.D13-SPI1_SCK/LED1
ARD.D12-SPI1_MISO
ARD.D11-SPI1_MOSI/PWM
ARD.D10-SPI_SSN/PWM
ARD.D9-PWM
ARD.D8
C1
100nF
GND
Header 10X1_Female_SMD
Header 8X1_Female_SMD
ARD.A0-ADC
ARD.A1-ADC
ARD.A2-ADC
ARD.A3-ADC
ARD.A4-ADC
ARD.A5-ADC
1
2
3
4
5
6
A0
A1
A2
A3
A4
A5
AIN
DocID030118 Rev 3
CN3
CN4
Header 6X1_Female_SMD
D7
PWM/D6
PWM/D5
D4
PWM/D3
D2
TX/D1
RX/D0
8
7
6
5
4
3
2
1
ARD.D7
ARD.D6-PWM
ARD.D5-PWM
ARD.D4
ARD.D3-PWM/INT1_EXTI0
ARD.D2-INT0_EXTI14
ARD.D1-UART4_TX
ARD.D0-UART4_RX
Header 8X1_Female_SMD
Designed by DiZiC
Title: Arduino Uno connector
Project:
Size: A4
Reference: MB1297
Date: 29/01/2017
Revision: D
Sheet: 9 of 11
UM2153
UM2153
Figure 31. Peripherals
USER & WAKE-UP Button
RESET BUTTON
Close
SB2
R23
100K
Close
SB3
R19
STM_NRST
3V3
R24
BUTTON_EXTI13
1K
GND
1K
B1
C34
100nF
C35
10pF
GND
B2
C36
100nF
SW-PUSH-CMS_BLACK
GND
C37
10pF
GND
GND
SW-PUSH-CMS_BLUE
GND
100nF should be place close to the MCU
10pF and 1K should be place close to the button
100nF should be place close to the MCU
10pF and 1K should be place close to the button
The 2 LEDs are top side
PMOD
3V3
C73
GND
PMOD-UART2_TX/SPI2_CSN
100nF
10K
R38
GND
200K
4
3
2
VCC-
LD1
1K
LED
GND
GREEN
Open
Close
SB14
PMOD-UART2_CTS/SPI2_MISO
R18
1
SB12
PMOD-UART2_RTS/SPI2_MOSI
U21
VCC+
SB15
ARD.D13-SPI1_SCK/LED1
5
SB16
R16
SB19
Close
SB1
SB18
DocID030118 Rev 3
USER LED
Open
Close
Close Open
GND
TSV631AILT
R20
LED2
LD2
330R
LED
GND
GREEN
GND
SB21
Close
SB20
Open
3V3
1
2
3
4
5
6
CN10
7
8
9
10
11
12
PMOD-IRQ_EXTI2
PMOD-RESET
GND
3V3
HEADER_2X6_PMOD
WIFI
R21
LED3(WIFI) & LED4(BLE)
LD3
1K
R22
680R
LD4
LED
GND
YELLOW
PMOD-SPI2_SCK
PMOD-UART2_RX
LED
3V3
BLUE
BLE
Designed by DiZiC
Title: Peripherals
Project:
Size: A4
Reference: MB1297
Revision: D
Sheet: 10 of 11
51/57
Schematics
Date: 29/01/2017
R28
4K7
2K7
PWR_EXT
R29
GND
Board Ident: PC13=0
10K R31
GND
GND
3V3_ST_LINK
GND
4K7
R41
4K7
GND
ST-LINK-UART1_TX
CN6
Fitted: NO
0R
0R
VDD_3
VSS_3
PB9
PB8
BOOT0
PB7
PB6
PB5
PB4/JNTRST
PB3/JTDO
PA15/JTDI
JTCK/SWCLK
1
2
3V3_ST_LINK
36
35
34
33
32
31
30
29
28
27
26
25
STM_JTMS
USB_STLK_P
USB_STLK_N
T_SWO
LED_STLINK
GND
1050170001
R39
1
R45
BSR14
R46
36K
R48
10K
5V_USB_ST_LINK
C60
C61
C62
C63
100nF
100nF
100nF
100nF
GND
GND
Only footprint with Cable: TC2050-IDC-NL
D3
BAT60JFILM
D4
BAT60JFILM
D5
BAT60JFILM
U16 LD3985M33R
SB10
1
Close
Vin
3
INH
GND
BYPASS
C56
C57
1uF
100nF GND
GND
5
Vout
GND
C58
C59
10nF
1uF
GND
GND
C55
100nF
GND
GND
STLINK_LED
ST LINK USB Power switch 5V / 1.2A
100R
Red
USB_RENUMn
GND
1
2
4
3
R44
5V_USB_ST_LINK
SB11
330R
5V_USB_ST_LINK
3V3_ST_LINK
_Green
5V_USB_CHARGER
R47
C64
R51
R52
330R
1uF
LD7
ST-LINK DEBUG
SWCLK
U18
GND
D2
Vbus
D+out
D-out
Dz
Pup
B3
C3
D3
A2
B2
3
SWDIO
OUT
OUT
FAULT
SET
ON
GND
6
7
5
4
R53
2K2
C65
100nF
ST890CDR
GND
STM_JTMS
GND
GND
3V3_ST_LINK
R54
100K
Designed by DiZiC
GND
CN8 Header 4 pins
Fitted: NO
EMIF02-USB03F2
ESD PROTECTION SHOULD BE CLOSE TO THE CONNECTOR
GND
STM_JTCK
LED
RED
IN
IN
Open
1
2
3
4
ID
D+in
D-in
Pd1
Pd2
1
2
GND
PWR_ENn
A3
C1
D1
B1
C2
Ilim = 625mA
1.2Ilim = 750mA < Isc
1.5Ilim = 938mA > Isc
U17
R49
8
USB_STLK_N
USB_STLK_P
USB_STLK_ID
6
7
8
9
10
11
5V_ST_LINK
LED_STLINK
GND
LD_BICOLOR_CMS
1
2
3
4
5
GND
10
9
8
7
6
3V3_ST_LINK
5V_USB_FS
GND
CN5
1
2
3
4
5
100R
3V3_ST_LINK
GND
3V3_ST_LINK
R35
22R
LD6
CN7
Shield
Shield
Shield
Shield
EXP
EXP
GND
R34
22R
Fitted: NO TC2050-IDC-NL
SWD INTERFACE
ST-LINK POWER 3V3 / 150mA
5V_ARD
3V3_ST_LINK
ST-LINK USB CONNECTOR
R50
1K5
VBUS
DM
DP
ID
GND
STM_NRST
R33
22R
GND
PWR_ENn
T_JTMS
T_JTCK
T_SWDIO_IN
3
2
Q1
SYS_JTDO-SWO
3V3_ST_LINK
13
14
15
16
17
18
19
20
21
22
23
24
R43
Close
U15
STM32F103CBT6
VDD_2
VSS_2
JTMS/SWDIO
PA12
PA11
PA10
PA9
PA8
PB15
PB14
PB13
PB12
T_JTCK
R42
USB_Micro-B receptacle
DocID030118 Rev 3
GND
ST-LINK-UART1_RX
T_NRST SB8
SYS_JTCK-SWCLK
100K
JP8 GND
AIN_1
Close
1K
R40
SB7
10K
C54
100nF
VBAT
PC13
PC14
PC15
OSCIN
OSCOUT
NRST
VSSA
VDDA
PA0
PA1
PA2
T_NRST
OSC_IN
OSC_OUT
STM_RST
T_SWO
SYS_JTMS-SWDIO
R32
22R
48
47
46
45
44
43
42
41
40
39
38
37
NX3225GD-8.00M
1
2
3
4
5
6
7
8
9
10
11
12
PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2/BOOT1
PB10
PB11
VSS_1
VDD_1
2
Close
TAG_SWO
X3
3V3_ST_LINK
SB6
TAG_NRST
10pF
1
Not Fitted (0R)
Close
T_JTCK
TAG_SWDIO
C52
10pF
R30
T_JTMS SB5
USB_RENUMn
STM_JTCK
GND
C51
5V
TAG_SWCLK
GND
100K
3V3_ST_LINK
R36
Not Fitted (10K)
GND
D2
BAT60JFILM
4
R27
GND
2
ST-LINK MCU
Schematics
52/57
Figure 32. ST-LINK/V2-1 with support of SWD only
GND
Must be on a border or the PCB.
Title: ST-LINK/V2-1 with support of SWD only
Project:
Size: A4
Reference: MB1297
Date: 12/03/2017
Revision: D
Sheet: 11 of 11
UM2153
UM2153
Board revision history and limitations
Appendix C
Board revision history and limitations
Table 12. Board revision history and limitations
Board
Version
MB1297
A
Not available; engineering samples
only
MB1297
B
Not available; engineering samples
only
MB1297
MB1297
C-01
D-01
Revision details
Known limitations
First official IoT Discovery kit
version with following changes
compared to MB1297C
schematics:
– Capacitor value for NFC
matching changed (C53 = 10 pF
instead of 47 pF and C71 =
10 pF instead of 47 pF)
– STSAFE-A100 (U9 component)
not fitted on MB1297C
– Firmware revision inside the
Wi-Fi module must be:
C3.5.2.3.BETA9. The Wi-Fi
module maximum output power
is limited to 9 dBm to fulfill
FCC/IC/CE requirements.
– A limitation is present on the
MB1297C-01 board. The reset
connexion between STM32L4
and the ST-LINK MCU
(STM32F103) is not present
even if schematics are correct.
The software reset is available
so that the hardware missing
reset may not be necessary. If
the hardware reset is needed, a
simple workaround is available
by soldering an external wire
between the SB2 and SB8.
– Firmware revision inside the
Wi-Fi module must be:
C3.5.2.3.BETA9. The Wi-Fi
module maximum output power
is limited to 9 dBm to fulfill
FCC/IC/CE requirements.
Second official IoT Discovery kit.
No BOM changes compared to the
MB1297 C-01 BOM, that is C53 =
10pF, C71 = 10pF and STSAFEA100 (U9 component) not fitted.
Two pcb changes compared to the
MB1297 C-01 pcb:
– The reset connexion between
STM32L4 and the ST-LINK MCU
(STM32F103) is implemented of
the MB1297 rev D
– The pcb below the Wi-Fi antenna
has been removed to have more
Wi-Fi radiated output power
Firmware revision inside the Wi-Fi
module must be: C3.5.2.3.BETA9.
The Wi-Fi module maximum
output power is then limited to 9
dBm to fulfill FCC/IC/CE
requirements.
DocID030118 Rev 3
53/57
56
Federal Communications Commission (FCC) and Industry Canada (IC) Compliance
Appendix D
UM2153
Federal Communications Commission (FCC)
and Industry Canada (IC) Compliance
Applicable for IoT node Discovery kit products with order code B-L475E-IOT01A1
(containing SPSGRF-915 module).
D.1
FCC Compliance Statement
Contains FCC ID: O7P-362
Contains FCC ID: S9NSPBTLERF
Contains FCC ID: S9NSPSGRF
D.1.1
Part 15.19
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired
operation.
D.1.2
Part 15.105
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures:
8.7.1
•
Reorient or relocate the receiving antenna.
•
Increase the separation between the equipment and the receiver.
•
Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
•
Consult the dealer or an experienced radio/TV technician for help.
Part 15.21
Any changes or modifications to this equipment not expressly approved by
STMicroelectronics may cause harmful interference and void the user’s authority to operate
this equipment.
8.8
IC Compliance Statement
Contains/Contient IC: 10147A-362
Contains/Contient IC: 8976C-SPBTLERF
54/57
DocID030118 Rev 3
UM2153
Federal Communications Commission (FCC) and Industry Canada (IC) Compliance
Contains/Contient IC: 8976C-SPSGRF
8.8.1
Compliance Statement
Industry Canada ICES-003 Compliance Label: CAN ICES-3 (B)/NMB-3(B)
This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to
the following two conditions:
8.8.2
1.
This device may not cause interference; and
2.
This device must accept any interference, including interference that may cause
undesired operation of the device.
Déclaration de conformité
Étiquette de conformité à la NMB-003 d’Industrie Canada: CAN ICES-3 (B)/NMB-3(B)
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils
radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes:
8.8.3
1.
L’appareil ne doit pas produire de brouillage;
2.
L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d’en compromettre le fonctionnement.
RF exposure statement
To satisfy FCC and IC RF Exposure requirements for mobile devices, a separation distance
of 20 cm or more should be maintained between the antenna of this device and persons
during operation. To ensure compliance, operation at closer than this distance is not
recommended. This transmitter must not be co-located or operating in conjunction with any
other antenna or transmitter.
Pour satisfaire aux exigences FCC et IC concernant l'exposition aux champs RF pour les
appareils mobiles, une distance de séparation de 20 cm ou plus doit être maintenu entre
l'antenne de ce dispositif et les personnes pendant le fonctionnement. Pour assurer la
conformité, il est déconseillé d'utiliser cet équipement à une distance inférieure. Cet
émetteur ne doit pas être co-situé ou fonctionner conjointement avec une autre antenne ou
un autre émetteur.
DocID030118 Rev 3
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56
Revision history
UM2153
Revision history
Table 13. Document revision history
56/57
Date
Revision
Changes
31-Mar-2017
1
Initial version.
14-Apr-2017
2
Updated Section 7.12.6: Time-of-Flight and gesture detection
sensor (VL53L0X) to add Class 1 laser information.
28-Jun-2017
3
Updated: Section 7.11.3: Wi-Fi module Inventek ISM43362-M3GL44 (802.11 b/g/n) and Section Appendix B: Schematics to reflect
MB1297 rev D updates.
DocID030118 Rev 3
UM2153
IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and
improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on
ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order
acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or
the design of Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2017 STMicroelectronics – All rights reserved
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Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.3 Linearized : No Tagged PDF : Yes Page Layout : SinglePage Page Mode : UseNone Page Count : 57 Producer : Acrobat Elements 10.0.0 (Windows); modified using iText 2.1.7 by 1T3XT Keywords : Technical Literature, 030118, Product Development, Specification, User manual, B-L475E-IOT01A Subject : - Modify Date : 2017:06:29 19:28:12+02:00 Creator : C2 v4.2.0220 build 670 - c2_rendition_config : Techlit_Active Title : Discovery kit for IoT node, multi-channel communication with STM32L4 Revision : 3 Classification : Unclassified Alternate Name : UM2153 Alternate ID : 030118 Document Type : User manual Author : STMICROELECTRONICS Create Date : 2017:06:29 15:30:16ZEXIF Metadata provided by EXIF.tools