ST Microelectronics S R L WESU1 Evaluation Board User Manual ST Platform name

ST Microelectronics S.R.L. Evaluation Board ST Platform name

User Manual

UMxxxx USER MANUALEvaluation Board STEVAL-WESU1 July 2015 Rev 0.1 STMicroelectronics Confidential 1/22 Introduction The STEVAL-WESU1 is a System Evaluation Board designed to provide a cost effective solution for precise motion sensing in wearable applications. The system is featuring a low power ARM Cortex-M3 microcontroller unit (STM32L151), an iNEMO inertial module (LSM6DS3), a high performance magnetometer (LIS3MDL), a barometric pressure sensor (LPS25HB), a Bluetooth® low energy wireless network processor (BLUENRG-MS) and power management circuitry that allows fast charging and precise energy estimation (STNS01 and STC3115). The connectivity granted by the best in class BLUENRG-MS and supported by the integrated balun (BALF-NRG-01D3) permit to maximize the RF performances with low area occupancy and design effort and pass the RF Test for FCC certification (FCC ID: S9NWESU1) and IC certification (IC ID: 8976C-WESU1). An Android and iOS APP, available on Google Play and Apple Store, can be used for displaying information sent by the STEVAL-WESU1 through BLE connectivity as well as for setting operative modes. Figure 1. STEVAL-WESU1 evaluation board
2/22 Version 0.1 STMicroelectronics Confidential Table of Contents 1 Board Description and Getting started ................................................................................... 4 1.1 Getting started ........................................................................................................................ 5 2 Hardware description ............................................................................................................... 8 2.1 Microcontroller ........................................................................................................................ 8 2.2 Sensors .................................................................................................................................. 8 2.2.1 LSM6DS3 ............................................................................................................................... 8 2.2.2 LISM3DL ................................................................................................................................ 8 2.2.3 LPS25HB ................................................................................................................................ 9 2.3 BLUENRG-MS and BALF-NRG-01D3 ................................................................................... 9 2.4 Power management ............................................................................................................... 9 2.4.1 STNS01 and STLQ015 .......................................................................................................... 9 2.4.2 STC3115 .............................................................................................................................. 10 2.5 Connectors ........................................................................................................................... 10 2.5.1 Battery connector ................................................................................................................. 10 2.5.2 SWD Connector and external peripherals............................................................................ 11 2.5.3 USB Connector .................................................................................................................... 12 2.5.4 Exposed pad connector ....................................................................................................... 12 2.5.5 uFL connector ...................................................................................................................... 12 2.6 Buttons and LEDs ................................................................................................................ 12 3 Formal notices required by the U.S. Federal Communications Commission ("FCC") ....... 13 4 Formal notices required by the Industry Canada ("IC") ....................................................... 14 5 Board schematic and bill of material ..................................................................................... 15 5.1 Bill of material ....................................................................................................................... 15 5.2 Schematic ............................................................................................................................. 19 6 Revision history ...................................................................................................................... 20
Error! No text of specified style in document. ST application note template STMicroelectronics Confidential Rev 0.1 4/22 DRAFT 1 Board Description and Getting started The STEVAL-WESU1 is a System Evaluation Board designed and optimized in order to be a reference design for users would made their own wearable electronic devices. In fact, the system architecture is made up of hardware, firmware and software solutions to accelerate the overall development of all applications: from embedded end-customer devices to mobile software development. The design choices have been taken to address accurate motion tracking suitable for training in every kind of activity or sport. Main Components: - STM32L151VEY6, ultra-low-power ARM Cortex-M3 MCU with 512 Kbytes FLASH, 48kBytes of RAM in WLCSP100 package - BLUENRG-MS, Bluetooth Low Energy (BLE) single-mode network processor, compliant with Bluetooth specification core 4.0 - BALF-NRG-01D3, 50 Ω balun for BLUENRG-MS transceiver with integrated harmonic filter - LSM6DS3, iNEMO inertial module 3D accelerometer (±2/4/8g) + 3D gyroscope (±245/500/2000dps) - LIS3MDL, MEMS 3D magnetometer (±4/8/12/16 gauss) - LPS25HB, MEMS pressure sensor, 260-1260 hPa absolute digital output barometer - STC3115, Gas gauge IC with alarm output - STNS01, Li-Ion linear battery charger - STLQ015XG30R, linear voltage regulator The Figure 2 shows a function block diagram of the board where the sensors and the BLUENRG-MS are connected to microcontroller through two separate SPI peripherals, meanwhile the power management is driven by I2C peripheral. The system can be powered with USB connected to PC or through specific battery. The USB is also used for battery recharge. Figure 3 shows the block diagram of the RFIC BLUENRG-MS. Figure 2. Functional Block Diagram
ST application note template Error! No text of specified style in document. STMicroelectronics Confidential Rev 0.1 5/22 DRAFT Figure 3. Block Diagram of RFIC: BlueNRG-MS 1.1 Getting started The system is delivered fully assembled and connected with battery and with LDO off (shipment mode, with 2uA power consumption). It can be simply switched ON with USB-powered cable insertion (micro B male plug). The USB port connector can be used for battery charging. The system takes up to 160mA (@5V) to recharge the battery; for this reason you can use both USB wall adapter and PC port with this capability. Two LEDs (LED1 and LED2, see Figure 3) describes the Application Status and the Battery Charging Status. The Charging LED (LED 2) could be: - Light ON, the USB plug is correctly connected and the board is charging; - Light OFF, the board is not charging (use USB cable reconnection to force re-start); - Blinking (approximately at 1Hz), charging failure (e.g. over-temperature, three wires battery not connected); It is important to avoid deep discharge (< 30%) to maintain battery integrity and to prevent long-term malfunctioning. The User Button (see Figure 4) can be pressed to enter and exit the Stop MODE. At power on the Application LED (LED1) starts with one smooth blink and in normal operation it blinks at 2s interval; after BLUENRG-MS connection the blinking interval becomes 1s and STEVAL-WESU1 system reads sensors data and sends it to a Bluetooth Smart Ready device; the data is displayed using a dedicated App.
Error! No text of specified style in document. ST application note template 6/22 Version 0.1 STMicroelectronics Confidential DRAFT A custom (1.27 mm pitch) SWD connector is used to have a compact solution, since to program the on-board STM32L151 it has been included in the package a specific adapter useful to be connected to a programmer tool (e.g. ST-LINK/v2). Figure 4. Board Layout – top layer Figure 5. Board Layout – Bottom layer
ST application note template Error! No text of specified style in document. STMicroelectronics Confidential Rev 0.1 7/22 DRAFT Once it has been verified the battery is enough charged, the board is ready to be used. To visualize the information sent through the Bluetooth Low Energy connectivity is fundamental to install one of the App available for the Smartphone and Tablet: - ST WESU Android App, available on Google Play; - ST WESU iOS App available on Apple Store. To use this App is need a Smartphone or Tablet supporting the BLE connectivity, i.e. iPhone 4S and subsequent or, an Android based device with Android OS 4.3 or higher.
Error! No text of specified style in document. ST application note template 8/22 Version 0.1 STMicroelectronics Confidential DRAFT 2 Hardware description This section describes the main components present on the board and described in Figure 3 and 4. 2.1 Microcontroller STM32L151VEY6 is an ultra-low-power microcontroller unit based on ARM Cortex M3. It features a great range of low power modes and an efficient voltage scaling that allows power saving. 2.2 Sensors Thanks to their overall integration level the embedded sensors offer great flexibility in terms of accuracy of the system and in terms of power consumption. The integrated sensors perfectly fit the needs of an accurate AHRS algorithm (e.g. embedded iNEMO-Engine running on the STM32L151VEY6), height estimation and everything needed for wearable motion tracking: from extreme low power activity tracker to more advanced motion reconstruction. 2.2.1 LSM6DS3 The LSM6DS3 is a system-in-package featuring a 3D digital accelerometer and a 3D digital gyroscope performing at 1.25 mA (up to 1.6 kHz ODR) in high performance mode and enabling always-on low-power features for an optimal motion experience for the consumer. Up to 8 Kbyte of FIFO with dynamic allocation of significant data (i.e. external sensors, time stamp, etc) allows the overall power saving of the system.. ST’s family of MEMS sensor modules leverages the robust and mature manufacturing processes already used for the production of micro machined accelerometers and gyroscopes. The various sensing elements are manufactured using specialized micromachining processes, while the IC interfaces are developed using CMOS technology that allows the design of a dedicated circuit which is trimmed to better match the characteristics of the sensing element. The LSM6DS3 has a full-scale acceleration range of ±2/±4/±8/±16 g and an angular rate range of ±125/±245/±500/±1000/±2000 dps. High robustness to mechanical shock makes the LSM6DS3 the preferred choice of system designers for the creation and manufacturing of reliable products. The LSM6DS3 is available in a plastic land grid array (LGA) package. 2.2.2 LISM3DL 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 functioning of the sensor in the final application. The device may be configured to generate interrupt signals for magnetic field detection. The LIS3MDL includes an I2C serial bus interface that supports standard and fast mode (100 kHz and 400 kHz) and SPI serial standard interface. The LIS3MDL is available in a small thin plastic land grid array package (LGA) and is guaranteed to operate over an extended temperature range of -40 °C to +85 °C.
ST application note template Error! No text of specified style in document. STMicroelectronics Confidential Rev 0.1 9/22 DRAFT 2.2.3 LPS25HB The LPS25HB is an ultra-compact absolute piezo-resistive pressure sensor. It includes a monolithic sensing element and an IC interface able to take the information from the sensing element and to provide a digital signal to the external world. Thanks to its great accuracy (1 Pa RMS, 24bit ADC resolution), its bandwidth (1 Hz – 25 Hz) and to its very low power consumption (4uA low power mode, 25uA high performance mode) the integration of this sensor is suitable for height estimation (e.g. VRU Vertical Reference Unit) and to enhance standard IMU performances with high frequency altitude reference. 2.3 BLUENRG-MS and BALF-NRG-01D3 The BLUENRG-MS is a very low power Bluetooth low energy (BLE) single-mode network processor, compliant with Bluetooth specification v4.1. The BLUENRG-MS can act as master or slave. The entire Bluetooth low energy stack runs on the embedded Cortex M0 core. The non-volatile Flash memory allows on-field stack upgrading. The BLUENRG-MS allows applications to meet the tight advisable peak current requirements imposed with the use of standard coin cell batteries. The maximum peak current is only 8.2 mA at 0 dBm of output power. Ultra low-power sleep modes and very short transition times between operating modes allow very low average current consumption, resulting in longer battery life. The BLUENRG-MS offers the option of interfacing with external microcontrollers using SPI transport layer. BALF-NRG-01D3 is a 50Ω conjugate match to BLUENRG-MS (QFN32 package) that integrates balun transformer and harmonics filtering. It features high RF performances with a very small footprint and a RF BOM reduction. It has been chosen as the best trade-off for costs, area occupation and high radio performances. The layout has been optimized to match 4 layers design and a chip antenna. 2.4 Power management The power management block includes the STNS01, the STLQ015 and the STC3115 2.4.1 STNS01 and STLQ015 The STNS01 is a linear charger for single-cell Li-Ion batteries. In STEVAL-WESU1 system it is configured as battery charger and as power path selected between USB power source and battery power source. The STNS01's battery charger is designed to charge single cell Li-Ion batteries up to 4.2 V using a CC-CV charging algorithm (see STNS01 datasheet for more details). When a valid input voltage is detected, the STNS01 starts the charge cycle and the CHG pin switches from high impedance to low level. The CHG pin is connected to LED2 to monitor the charger. The charging status LED (LED 2) can be: - solid ON: the USB plug is correctly connected and the board is charging; - solid OFF: the board is not charging (use USB cable reconnection to force re-start); - blinking (approx. 1Hz): charging failure (e.g. over-temperature, three wires battery not connected);
Error! No text of specified style in document. ST application note template 10/22 Version 0.1 STMicroelectronics Confidential DRAFT The SYS pin is the voltage output of STNS01 selected power path. That SYS pin is connected to the linear voltage regulator STLQ015XG30R that provide a 3V (VDD) to all other devices. The STM32L151 is also connected to its SHDN pin to disconnect the power delivery to most of the devices and enable the shipment mode. 2.4.2 STC3115 The STC3115 includes the hardware functions required to implement a low-cost gas gauge for battery monitoring. The STC3115 uses current sensing, Coulomb counting and accurate measurements of the battery voltage to estimate the state-of-charge (SOC) of the battery. An internal temperature sensor simplifies implementation of temperature compensation. An alarm output signals a low SOC condition and can also indicate low battery voltage. The alarm threshold levels are programmable. The STC3115 offers advanced features to ensure high performance gas gauging in all application conditions. 2.5 Connectors The following sub-sections describe the connectors of STEVAL-WESU1 board (see Figure 4 as reference). The STEVAL-WESU1 has “L” form factor (see Figure 4), suitable to host the battery (i.e. 12xd25mm @ 85 mAh) in plane with the PCB and optimize the final design. Figure 5 Photo of STEVAL-WESU1 with Battery 2.5.1 Battery connector Battery connector is placed on the shrink side of the board (see Figure 2). Its hardware connection is shown in Figure 6 Figure 6 Battery connector Schematic
ST application note template Error! No text of specified style in document. STMicroelectronics Confidential Rev 0.1 11/22 DRAFT 2.5.2 SWD Connector and external peripherals A custom 10 pin (1.27 mm pitch) connector is soldered. It can be used: - to program on-board microcontroller through a dedicated adapter connected to programmer tool (like ST-Link) (Figure 7) - as an expansion connector to allow user to access to other board features as described in Table1 Figure 7: SWD Connector Table1 Expansion Connector GPIO Description Expansion Connector GPIO Description Exp. Pin J500 Port/Pin Default func. Expansion PIN PWM USART ADC 8 A2 Push Button 1 TIM2CH3 USART2_TX ADC_CH2 3 B0 User LED 2 TIM3CH3 ADC_CH8 6 A3 - 3 TIM2CH4 USART2_RX ADC_CH3 TP512 B12 - 4 TIM10CH1 ADC_CH18
Error! No text of specified style in document. ST application note template 12/22 Version 0.1 STMicroelectronics Confidential DRAFT 2.5.3 USB Connector The USB connector accepts a micro USB type B and it is used to charge the battery or to power the board if battery is not present. 2.5.4 Exposed pad connector STEVAL-WESU1 gives the possibility to reduce form factor by cutting PCB area hosting USB connector and expansion connector (see cutting line in 8). USB feature will be accessible by exposed pads on the bottom of the PCB (8). Firmware upgrade will be possible only over the air or via USB DFU. Figure 8: STEVAL-WESU1 Exposed Pads 1: USB DP 2: USB 5V 3: GND 4: USB DM 5: TP512 – Expansion PIN 4 test point 2.5.5 uFL connector The uFL connector U201 (not mounted) is connected to BLUENRG-MS RF path through C206 (not mounted). By soldering a 51pF capacitor and desoldering L204, the uFL connector RF path can be activated, useful for debug purposes. 2.6 Buttons and LEDs The STEVAL-WESU1 board has 2 LEDs and only one button for user operations.
ST application note template Error! No text of specified style in document. STMicroelectronics Confidential Rev 0.1 13/22 DRAFT 3 Formal notices required by the U.S. Federal Communications Commission ("FCC") Model: STEVAL-WESU1 FCC ID: S9NWESU1 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. 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. For Class A Digital Devices This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. For Class B Digital Devices 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's by one or more of the following measures:  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.
Error! No text of specified style in document. ST application note template 14/22 Version 0.1 STMicroelectronics Confidential DRAFT 4 Formal notices required by the Industry Canada ("IC") Model: STEVAL-WESU1 IC: 8976C-WESU1 English: This Class A or B digital apparatus complies with Canadian CS-03. Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. This device complies with Industry Canada licence-exempt RSS standard(s). Operation is subject to the following two conditions: (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. French: Cet appareil numérique de la classe A ou B est conforme à la norme CS-03 du Canada. Les changements ou les modifications pas expressément approuvés par la partie responsable de la conformité ont pu vider l’autorité de l'utilisateur pour actionner l'équipement. Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio exempts de licence. 'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement.
Error! No text of specified style in document. ST application note template STMicroelectronics Confidential Rev 0.1 15/22 DRAFT 5 Board schematic and bill of material This section contains the bill of material and layout of the STEVAL-WESU1 5.1 Bill of material BOM STEVAL-WESU1 Item Q.ty Reference Part/Value Voltage /Ampere /Ohm Type / Additional Notes Tolerance Package Manufacturer Manufacturer Code More Info 1 1 ANT1 2.4 GHz Chip Antenna SMD Pulse W3008C 2 1 CN500 Micro_USB_AB Molex 47590-0001 3 5 C110,C200,C216,C401,C411 1uF 6.3V Ceramic X5R ±10% SMD 0402 Murata GRM155R60J105KE19D 4 23 C111,C112,C113,C114,C115, C116,C201,C219,C222,C225, C228,C302,C304,C305,C306, C307,C308,C309,C406,C407, C412,C504,C505 100nF 16V Ceramic X5R ±10% SMD 0201 Murata GRM033R61C104KE84D 5 4 C117,C303,C400,C404 10uF 6.3V Ceramic X5R ±20% SMD 0402 TDK C1005X5R0J106M050BC 6 2 C118,C119 10pF 25V Ceramic C0G, NP0 ±0.5pF SMD 0201 TDK C0603C0G1E100D030BA
Error! No text of specified style in document. ST application note template 16/22 Version 0.1 STMicroelectronics Confidential DRAFT 7 1 C206 51pF NOT MOUNT 50V Ceramic C0G ±10% SMD 0402 Murata GRM1555C1H510GA01D Mandatory Use Manuf.Code Marked 8 2 C212,C213 12p 50V CH ±0.1pF SMD 0201 Murata GRM0335C1H120GA01 Mandatory Use Manuf.Code Marked 9 2 C214,C221 100p 16V Ceramic X7R ±10% SMD 0201 Murata GRM033R71C101KD01D Mandatory Use Manuf.Code Marked 10 2 C223,C224 Not Mount Not Mount Not Mount Not Mount SMD 0402 Murata Not Mount 11 2 C226,C227, C22,C23 15p 25V C0G ±0.1pF SMD 0201 Murata GJM0336C1E150FB01D Mandatory Use Manuf.Code Marked 12 1 C229 150n 6.3V Ceramic X5R ±10% SMD 0402 Murata GRM155R60J154KE01D Mandatory Use Manuf.Code Marked 13 2 C402,C403 2.2uF 6.3V Ceramic X5R(EIA) ±20% SMD0402 Murata GRM155R60J225ME95D 14 3 C405,C408,C409 10nF 10V Ceramic X7R ±10% SMD 0201 Murata GRM033R71A103KA01D 15 1 C410 220nF 16V Ceramic X7R ±10% SMD 0402 Murata GRM155R71C224KA12D 16 1 C500 4.7nF 50V Ceramic X7R ±10% SMD 0402 Murata GRM155R71H472KA01D 17 1 C501 47uF 10V Ceramic X5R ±20% SMD 0805 TDK C2012X5R1A476M125AC 18 1 D401 RED LED VISHAY VLMS1500-GS08 19 1 D500 WHITE LED VISHAY VLMW1500-GS08 20 1 D501 ESDALC6V1-1U2 ST0201 ST ESDALC6V1-1U2 ST-SUPPLY 21 1 D502 ESDA7P60-1U1M QFN ST ESDA&P60-1U1M ST-SUPPLY 22 1 J500 SWD/JTAG THR 1.27 mm 2x5 SAMTEC FTSH-105-01-F-D-K 23 1 J501 CON3 SMT 3W 1.2 Molex 78171-0003
ST application note template Error! No text of specified style in document. STMicroelectronics Confidential Rev 0.1 17/22 DRAFT mm pitch 24 1 L203 10uH 20% SMD 0805 Murata LQM21FN100M70L Mandatory Use Manuf.Code Marked 25 1 L204 0R OHM ±0,1nH SMD 0402 Murata TBD 26 1 L205,L206 3.9nH ±0,3nH SMD 0201 Murata LQG15HN3N9SO2D Mandatory Use Manuf.Code Marked 27 3 L401,L402,L403 1.5 Ohm 215 mA SMD 0201 Murata BLM03BD471SN1D 28 4 R113,R309,R405,R506 0 ±1% SMD 0201 ANY ANY 29 10 R116,R117,R119,R120,R121, R122,R123,R200,R201,R501 10k ±1% SMD 0201 ANY ANY 30 5 R301,R302,R303,R307,R308 0 ±1% SMD 0201 ANY ANY 31 5 R114,R118,R304,R305,R306 0-NOT MOUNT ±1% SMD 0201 ANY ANY 32 1 R400 2K ±1% SMD 0201 ANY ANY 33 1 R401 1R ±1% SMD 0201 ANY ANY 34 1 R402 60 - 0.05W ±1% SMD 0201 ANY ANY 35 2 R403-R408 1K ±1% SMD 0201 ANY ANY 36 1 R404 10K NTC -NOT MOUNT ±1% SMD 0402 Vishay NTCS0402E3103FLT 37 1 R412 1M ±1% SMD 0201 ANY ANY 38 1 R413 33K ±1% SMD 0201 ANY ANY 39 1 R500 1M ±1% SMD 0201 ANY ANY 40 2 R502,R503 100K ±1% SMD 0201 ANY ANY 41 1 R504 100 ±1% SMD 0201 ANY ANY 42 1 R505 0.05 ±1% SMD 0402 WELWYN LRCS0402-0R05FT5 43 1 SW500 SW Omron B3U-3000P
Error! No text of specified style in document. ST application note template 18/22 Version 0.1 STMicroelectronics Confidential DRAFT PUSHBUTTON-DPST 44 1 U201 U.FL connector - NOT MOUNT 50 Ohm - 6 Ghz SMD Coaxial Connector SMT Hirose U.FL-R-SMT-1(10) 45 1 U100 STM32L151VEY6 WLCSP104 ST STM32L151VEY6 ST-SUPPLY 46 1 U200 BLUENRG-MS VFQPN32 5x5 mm ST BLUENRG-MSQTR ST-SUPPLY 47 1 U202 BALF-NRG-01D3 FLIP CHIP 4 ball ST BALF-NRG-01D3 ST-SUPPLY 48 1 U301 LPS25HB HLGA-10L (2.5 x 2.5x 0.76 mm) ST LPS25HB ST-SUPPLY 49 1 U302 LSM6DS3 LGA-14L (2.5x3x0.83 mm) ST LSM6DS3 ST-SUPPLY 50 1 U303 LIS3MDL VFLGA-12 (2.0x2.0x1.0 mm) ST LIS3MDL ST-SUPPLY 51 1 U400 STNS01 DFN12L (3x3 mm) ST STNS01 ST-SUPPLY 52 1 U401 STC3115 CSP (1.4 x 2.0 mm) ST STC3115 ST-SUPPLY 53 1 U402 STLQ015XG30R SOT666 ST STLQ015XG30R ST-SUPPLY 54 1 U502 USBULC6-2M6 uQFN ST USBULC6-2M6(uQFN) ST-SUPPLY 55 2 Y2, Y201 NX2012SA 32k EXS00A-MU00389 NDK 56 1 Y101 NX2016SA 24MHZ EXS00A-CS05544 NDK 57 1 Y202 NX2016SA 32MHz EXS00A-CS06644 NDK
ST application note template Error! No text of specified style in document. STMicroelectronics Confidential Rev 0.1 19/22 DRAFT 5.2 Schematic
Error! No text of specified style in document. ST application note template 20/22 Version 0.1 STMicroelectronics Confidential DRAFT 6 Revision history Table 1: Table Title Revision Date of modification Description of modification 0.2 July 15 Initial draft 0.3 July 15 Modified version 0.4 July 15 Changed name in STEVAL-WESU1
ST application note template Error! No text of specified style in document. STMicroelectronics Confidential Rev 0.1 21/22 DRAFT
Error! No text of specified style in document. ST application note template 22/22 Version 0.1 STMicroelectronics Confidential DRAFT Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZE REPRESENTATIVE OF ST, ST PRODUCTS ARE NOT DESIGNED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS, WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com

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