S9NWESU1Evaluation Board

UMxxxx USER MANUAL Evaluation 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 f…

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address: via Olivetti, 2 Agrate Brianza Tel: +39 0396037530 Date: 23/10/2015 Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 SUBJECT: FCC Application for FCC ID: S9NWESU1 To Whom It May Concern: We, ST Microelectronics S.R.L., hereby attest to the fact that we will apply the Declaration of Conformity procedure to the class B computer peripheral portion of this composite filing. Sincerely yours, Contact Person: Paolo Evangelista Company: ST Microelectronics S.R.L. E-mail: [email protected]

Annex C Date (25/11/2015) BABT FCB Forsyth House, Churchfield Road, Walton-on-Thames, Surrey, KT12 2TD Dear Sir or Madam, We, STMicroelectronics srl, hereby authorize Compliance Certification Services Inc. / David Wang to act as our agent in all matters relating to applications for equipment authorization, including the signing of all documents relating to these matters. This authorization expires on 20/05/2016 Sincerely, Company Officer: Paolo Evangelista Telephone Number: +39 0396037530 Email: [email protected]

Date (23/10/2015) BABT TCB Forsyth House, Churchfield Road, Walton-on-Thames, Surrey, KT12 2TD Confidentiality Request FCC ID: S9NWESU1 Pursuant to Sections 0.457(d)(1)(ii) and 0.459 of the Commission’s Rules, ST Microelectronics S.R.L. hereby requests permanent confidential treatment of information accompanying this application as outlined below: [Common exhibits for which confidentiality is requested are: Schematics Bill of Materials/Parts List Block Diagrams Theory of Operation] ST Microelectronics S.R.L. also hereby requests short-term confidential treatment of information accompanying this application as outlined below for a period of 20/04/2016: [Common exhibits for which short-term confidentiality is requested are: Internal Photos External Photos User Manual Test Set-up Photographs The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457(d)(1)(ii), disclosure of this Application and all accompanying materials will not be made before the date of the Grant for this Application. Yours sincerely, Company Officer: Paolo Evangelista (signed by FCC listed Grantee contact) Telephone Number: +39 0396037530 Email: [email protected]

Date (25/11/2015) TUV SUD BABT TCB Octagon House, Segensworth Road, Fareham, Hampshire, PO15 5RL Modular Approval Request FCC ID: S9NWESU1 The following attestation addresses the requirements to support modular approval: Modular approval requirement Yes (provide brief statement) No * (a) The radio elements must have the radio frequency circuitry shielded. Physical components and tuning capacitor(s) may be located external to the shield, but must be on the module assembly The STEVAL-WESU1 does not embed any shield for the radio element, because it is a stand-alone solution that could be placed in a plastic box. (b) The module must have buffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal The STEVAL-WESU1 has buffer on BLUENRG-MS radio element. (c) The module must contain power supply regulation on the module The STEVAL-WESU1 has its own power supply regulation on board. (d) The module must contain a permanently attached antenna, or contain a unique antenna connector, and be marketed and operated only with specific antenna(s), per Sections 15.203, 15.204(b), 15.204(c), 15.212(a), 2.929(b) The STEVAL-WESU1 embeds a soldered chip antenna (e) The module must demonstrate compliance in a stand-alone configuration The STEVAL-WESU1 has been tested in stand-alone configuration (f) The module must be labelled with its permanently affixed FCC ID label, or use an electronic display (See KDB Publication 784748 about labelling requirements) The FCC ID label will be displayed as silkscreen in the PCB (g) The module must comply with all specific rules applicable to the transmitter. The grantee must provide comprehensive instructions to explain The STEVAL-WESU1 will have an User Manual containing all the needed instructions compliance requirements Modular approval requirement Yes (provide brief statement) No * (h) The module must comply with RF exposure requirements Yes. See test results * Please provide a detailed explanation if the answer is “No.” Yours sincerely, Name: Paolo Evangelista Title: Design and Application Manager

Compliance Certification Services Inc. Report No.: T150820J01 A1 - 1 / 3 Rev. 00 APPENDIX 1 - PHOTOGRAPHS OF EUT EXTERNAL PHOTOGRAPHS OF EUT Compliance Certification Services Inc. Report No.: T150820J01 A1 - 2 Rev. 00

Label design and label location ModelSTEVAL-WESU1 To p Bottom Label for end product Contains FCC ID: ZZZ-ZZZZZZZ

Compliance Certification Services Inc. Report No.: T150820J01 A1 - 3 Rev. 00 INTERNAL PHOTOGRAPHS OF EUT RF IC Antenna

Compliance Certification Services Inc. Report No.: T150820J01 Page 1 Rev.00 This report shall not be reproduced except in full, without the written approval of Compliance Certification Services. FCC ID: S9NWESU1 According to KDB 447498 section 4.3.1, the 1-g SAR test exclusion thresholds at test separation distance ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] *·[√f(GHz)] ≤ 3.0 The tune-up power is 4 dBm +/- 2dB, therefore the highest tune-up power is 6.0 dBm(3.98 mW)@ 2408 MHz When the minimum test separation distance is < 5 mm, a distance of 5 mm according to 5) in section 4.1 is applied to determine SAR test exclusion. So, (4mW / 5mm)* (2.408GHz^0.5 )= 1.2 [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] * [√f(GHz)] = 1.2 < 3.0 Therefore, standalone SAR measurements are not required for both head and body.

Compliance Certification Services Inc. FCC ID: S9NWESU1 Report No.: T150820J01-RP Note: This report shall not be reproduced except in full, without the written approval of Compliance Certification Services Inc. This document may be altered or revised by Compliance Certification Services Inc. personnel only, and shall be noted in the revision section of the document. Page 1 / 46 Rev.00 FCC 47 CFR PART 15 SUBPART C TEST REPORT For Evaluation Board Model: STEVAL-WESU1 Trade Name: ST Issued to ST Microelectronics S.R.L. Via C. Olivetti, 2, 20864 Agrate Brianza (MB), Italy Issued by Compliance Certification Services Inc. No.11, Wugong 6th Rd., Wugu Dist., New Taipei City 24891, Taiwan. (R.O.C.) http://www.ccsrf.com [email protected] Issued Date: August 27, 2015 Compliance Certification Services Inc. FCC ID: S9NWESU1 Report No.: T150820J01-RP Page 2 Rev. 00 Revision History Rev. Issue Date Revisions Effect Page Revised By 00 August 27, 2015 Initial Issue ALL Becca Chen Compliance Certification Services Inc. FCC ID: S9NWESU1 Report No.: T150820J01-RP Page 3 Rev. 00 TABLE OF CONTENTS 1. TEST RESULT CERTIFICATION ......................................................................................... 4 2. EUT DESCRIPTION ............................................................................................................. 5 3. TEST METHODOLOGY ....................................................................................................... 6 3.1 EUT CONFIGURATION .................................................................................................. 6 3.2 EUT EXERCISE .............................................................................................................. 6 3.3 GENERAL TEST PROCEDURES ................................................................................... 6 3.4 FCC PART 15.205 RESTRICTED BANDS OF OPERATIONS ........................................ 7 3.5 DESCRIPTION OF TEST MODES .................................................................................. 8 4. INSTRUMENT CALIBRATION ............................................................................................. 9 4.1 MEASURING INSTRUMENT CALIBRATION .................................................................. 9 4.2 MEASUREMENT EQUIPMENT USED ............................................................................ 9 4.3 MEASUREMENT UNCERTAINTY ................................................................................ 10 5. FACILITIES AND ACCREDITATIONS ............................................................................... 11 5.1 FACILITIES ................................................................................................................... 11 5.2 EQUIPMENT ................................................................................................................. 11 5.3 TABLE OF ACCREDITATIONS AND LISTINGS ........................................................... 12 6. SETUP OF EQUIPMENT UNDER TEST ............................................................................ 13 6.1 SETUP CONFIGURATION OF EUT .............................................................................. 13 6.2 SUPPORT EQUIPMENT ............................................................................................... 13 7. FCC PART 15.247 REQUIREMENTS ................................................................................ 14 7.1 6DB BANDWIDTH ......................................................................................................... 14 7.2 PEAK POWER .............................................................................................................. 18 7.3 AVERAGE POWER ...................................................................................................... 19 7.4 BAND EDGES MEASUREMENT .................................................................................. 20 7.5 PEAK POWER SPECTRAL DENSITY .......................................................................... 28 7.6 SPURIOUS EMISSIONS ............................................................................................... 32 7.7 POWERLINE CONDUCTED EMISSIONS ..................................................................... 44 APPENDIX I - PHOTOGRAPHS OF TEST SETUP .................................................................. 45 APPENDIX II - PHOTOGRAPHS OF EUT Compliance Certification Services Inc. FCC ID: S9NWESU1 Report No.: T150820J01-RP Page 4 Rev. 00 1. TEST RESULT CERTIFICATION Applicant: ST Microelectronics S.R.L. Via C. Olivetti, 2, 20864 Agrate Brianza (MB), Italy Equipment Under Test: Evaluation Board Trade Name: ST Model: STEVAL-WESU1 Date of Test: August 17, 2015 APPLICABLE STANDARDS STANDARD TEST RESULT FCC 47 CFR Part 15 Subpart C No non-compliance noted Deviation from Applicable Standard N/A We hereby certify that: The above equipment was tested by Compliance Certification Services Inc. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.10: 2013 and the energy emitted by the sample EUT tested as described in this report is in compliance with the requirements of FCC Rules Part 15.207, 15.209, 15.247. The test results of this report relate only to the tested sample EUT identified in this report. Approved by: Reviewed by: Miller Lee Angel Cheng Manager Section Manager Compliance Certification Services Inc. Compliance Certification Services Inc. Compliance Certification Services Inc. FCC ID: S9NWESU1 Report No.: T150820J01-RP Page 5 Rev. 00 2. EUT DESCRIPTION Product Evaluation Board Trade Name ST Model Number STEVAL-WESU1 Model Discrepancy N/A Received Date August 20, 2015 Power Rating Powered from LiPo Battery: LP501225 Rating: 3.7V, 100mAh Frequency Range 2402MHz ～ 2480MHz Transmit Power 5.12 dBm Modulation Technique GFSK (1Mbps) Number of Channels 40 Channels Antenna Specification CHIP An…

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Compliance Certification Services Inc. FCC ID: S9NWESU1 Report No.: T150820J01-RP Page 45 Rev. 00 APPENDIX I - PHOTOGRAPHS OF TEST SETUP CONDUCTED EMISSION SETUP PHOTOS Compliance Certification Services Inc. FCC ID: S9NWESU1 Report No.: T150820J01-RP Page 46 Rev. 00 RADIATED EMISSION SETUP PHOTOS