X8WESP32M16ESP32 WROOM-32 module

ESP32M4/M16/E4/E16 WiFi Modules Draft Ver 0.10 Jan. 2020 1 ESP32M16 Series WiFi module uses Expressif ESP32 D0WD SoC. Its footprint is exactly the same as that of Expressif ESP32 WROOM-32 module. The difference: • Tighter tolerance RF components with wider operating temperature range are used to provide consistent and improved RF circuit performance from -40 o C to +105 o C. • An ISSI 4 MB flash, IS25LP032-JBLE; or 16 MB flash, IS25LP128-JBLE with operating temperature range from -40 o C to +105 o C is used . Specifications: CPU • Expressif ESP32 D0WD, Xtensa dual core 32 bit LX6 microprocessors, up to 600 MIPS. • 448KB ROM, 520KB SRAM, 4MB or 16 MB flash • 16KB SRAM in RTC • QPSI supports multiple flash/SRAM chips • Internal 8 MHz oscillator with calibration • Internal RC oscillator • Embedded 40 MHz crystal oscillator • External 32 KHz crystal oscillator • Two timer group. 2x64 bit timers and 1x main watch dog in each group WiFi Features • 802.11 b/g/n, 802.11n (2.4 GHz).up to 150 Mbps • WMM • TX/RX A-MPDU, RX A-MSDU • Immediate Block ACK • Defragmentation • Automatic Beacon monitoring (hardware TSF) • 4x virtual WiFi interfaces • 34 GPIO pins • 12 bit SAR ADC up to 18 channels • 2x8 bit DAC • 10xtouch sensors • 4xSPI, 2xI 2 S, 2xI 2 C, 3xUART • 1 host (SD/eMMC/SDIO), 1 slave (SDIO/SPI) • Ethernet MAC interface with dedicated DMA and IEEE 1588 support • CAN 2.0, IR (TX/RX), Motor PWM • LED PWM up to 16 channels • Hall sensor Security • Secure boot, flash encryption • Cryptographic hardware acceleration, AES, Hash (SHA-2), RSA, ECC 38 castellated pins. Integrated PCB trace antenna or u.FL connector Operation voltage: 3.0V to 3.6V Model Summaries module ESP32M4 ESP32F4.ESP32E4.ESP32M16ESP32F16 ESP32E16. SoC ESP32-D0WDESP32-D0WDESP32-D0WDESP32-D0WDESP-D0WD ESP32-D0WD Flash memory 4MB, IS25LP032-JBLE 4MB, IS25LP032- JBLE 4MB, IS25LP032- JBLE 16MB, IS25LP128-JBLE 16MB, IS25LP128-JBLE16MB, IS25LP128-JBLE Size 18x25.5 18x25.5 18x25.518x25.520x29.5 18x25.5 WIFI Antenna PCB trace PCB traceu.FLPCB tracePCB trace u.FL Max TX Operating temp. -40 o C to +105 o C -40 o C to +105 o C-40 o C to +105 o C-40 o C to +105 o C -40 o C to +105 o C-40 o C to +105 o C Price at 1K pcs $3.46 $4.33 $4.49 Availability Sample 03/2020 Sample 03/2020 ESP32M4/M16/E4/E16 WiFi Modules Draft Ver 0.10 Jan. 2020 2 Table Of Contents 1. Introduction .......................................................................................................................................................... 3 Module Performance Enhancement .................................................................................................................... 3 ESP32M16 ........................................................................................................................................................... 3 ESP32F16 ............................................................................................................................................................ 4 ESP32M4 ............................................................................................................................................................. 4 ESP32E16 ............................................................................................................................................................ 4 ESP32E4 .............................................................................................................................................................. 4 2. Product Descriptions ............................................................................................................................................ 5 Block Diagram of ESP32 D0WD.......................................................................................................................... 5 Mechanical Drawings ........................................................................................................................................... 6 Pin Assignments of ESP32M16 ........................................................................................................................... 7 Pin Function ......................................................................................................................................................... 8 Mounting ESP32M4 on the Host PCB ................................................................................................................. 9 3. Firmware Development ...................................................................................................................................... 10 4. ESP32M4 Evaluation Board .............................................................................................................................. 11 ESP32M4 EvaluationBoard Schematics ........................................................................................................... 12 5. Miscellaneous .................................................................................................................................................... 13 Soldering Temperature-Time Profile for Re-Flow Soldering ............................................................................. 13 Cautions, Design Notes, and Installation Notes ................................................................................................ 13 Packaging and Lot Number ............................................................................................................................... 17 FCC Label .......................................................................................................................................................... 17 Revision History ..................................................................................................................................................... 18 Contact Us ........................................................................................................................…

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Company name DATE : 2020/04/27 Equipment Autorisation Division Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: X8WESP32M16 Request for Confidentiality Pursuant to Sections 0.457 and 0.459 of the commissions rules, we hereby request that the following documents be held confidential: (List here the documents for which you are seeking confidentiality – for example ...)  Schematics  Block diagram  Operation description These materials contain trade secrets and proprietary information and are not customarily released to the public. The public disclosure of this information might be harmful to the company and provide unjustified benefits to our competitors. Signature FCC grantee contact person information. Name/Title: Paudy Tung / Engineer Company Name: Fanstel Corporation, Taipei. Address: 10F-10, No. 79, Sec. 1, Hsin Tai Wu Rd., Hsi-Chih, New Taipei City 221 Taiwan TEL: +886-2-26989328 FAX: +886-2-86983141 Email: [email protected]

Declaration of the Modular Approval Applicant / Grantee Fanstel Corporation, Taipei / X8W FCC ID: X8WESP32M16 Model: ESP32M4; ESP32E4; ESP32M16; ESP32E16; ESP32F16; ESP32F4 The single module transmitter has been evaluated then tested meeting the requirements under Part 15C Section 2.12 as below: Modular approval requirement EUT Condition Comply (a) The radio elements of the modular transmitter must have their own shielding. The physical crystal and tuning capacitors may be located external to the shielded radio elements. Yes. The modular transmitter hasits own RF shielding. Compliant (b) The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with part 15 requirements under conditions of excessive data rates or over-modulation. Yes. The module hasbuffered modulation/data inputs to ensure that the device will comply with Part 15 requirements with any type of input signal. Compliant (c) The modular transmitter must have its own power supply regulation. Yes. The module containspower supply regulation. There are LDO and DCDC Regulator in chip nRF52832. Please refer to chip spec. Compliant (d) The modular transmitter must comply with the antenna and transmission system requirements of Sections 15.203, 15.204(b) and 15.204(c). The antenna must either be permanently attached or employ a “unique” antenna coupler (at all connections between the module and the antenna, including the cable). The “professional installation” provision of Section 15.203 is not applicable to modules but can apply to limited modular approvals under paragraph (b) of this section. Yes. The module contains a unique antenna connector, per Sections 15.203, 5.204(c) Compliant (e) The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing for compliance with part 15 requirements. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in Section 15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will be marketed with the module (see Section 15.27(a)). The length of these lines shall be the length typical of actual use or, if that length is unknown, at least 10 centimeters to insure that there is no coupling between the case of the module and supporting equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified and commercially available (see Section 15.31(i)) must not be inside another device during testing. Yes. The demonstratescompliance in a stand‐alone configuration Compliant (f) The modular transmitter must be equipped with either a permanently affixed label or must be capable of electronically displaying its FCC identification number. Yes. The module islabelled with its permanently affixed FCC ID label. Compliant (g) The modular transmitter must comply with any specific rules or operating requirements that ordinarily apply to a complete transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment authorization requirements, which are Yes. The module complies with all specific rules applicable to the transmitter including all the conditions provided in the integration instructions by the grantee. Compliant based on the intended use/configurations. (h) The modular transmitter must comply with any applicable RF exposure requirements in its final configuration. Yes. The module complies with RF exposure requirements. Compliant Dated 2020/04/27 By: _Pandy Tung Signature Printed Title: Engineer On behalf of : Fanstel Corporation, Taipei Telephone: +886‐2‐26989328

FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS APPENDIX 2 PHOTOGRAPHS OF EUT FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS EUT 1 ESP32 EUT 2 ESP32 FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS EUT 3 ESP32 EUT 4 ESP32E FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS EUT 5 ESP32E EUT 6 ESP32E FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS EUT 7 ESP32F EUT 8 ESP32F FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS EUT 9 ESP32F EUT 10 FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS EUT 11 EUT 12 FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS EUT 13 EUT 14

FCC ID & IC LABEL FORMAT AND LOCATION Applicant: Fanstel Corporation, Taipei FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 Back side

FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-19LR087FCDTS APPENDIX 2 PHOTOGRAPHS OF EUT FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-19LR087FCDTS EUT 1 ESP32 EUT 2 ESP32 FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-19LR087FCDTS EUT 3 ESP32 EUT 4 ESP32 FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-19LR087FCDTS EUT 5 ESP32E EUT 6 ESP32E FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-19LR087FCDTS EUT 7 ESP32E EUT 8 ESP32E FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-19LR087FCDTS EUT 9 ESP32F EUT 10 ESP32F FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-19LR087FCDTS EUT 11 ESP32F EUT 12 ESP32F

FCC ID: X8WESP32M16 International Standards Laboratory Corp. 1 1. Maximum Permissible Exposure (MPE) Standard Applicable According to 1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. This is a Mobile device, the MPE is required. According to 1.1310 and 2.1091 RF exposure is calculated. Limits for Maximum Permissive Exposure (MPE) Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minute) Limits for General Population/Uncontrolled Exposure 0.3-1.34 614 1.63 *(100) 30 1.34-30 824/f 2.19/f *(180/f 2 ) 30 30-300 27.5 0.073 0.2 30 300-1500 / / F/1500 30 1500-15000 / / 1.0 30 F = frequency in MHz * = Plane-wave equipment power density The MPE was calculated at 20 cm to show compliance with the power density limit The following formula was used to calculate the Power Density. S=PG/4R 2 Where: S = Power density P = Power input to antenna G = Power gain of the antenna in the direction of interest relative to an isotropic radiator R = Distance to the center of radiation of the antenna FCC ID: X8WESP32M16 International Standards Laboratory Corp. 2 Maximum Permissible Exposure (MPE) Evaluation 20 cm Frequency band Conducted power (dBm) Antenna gain (dBi) Tune-Up Tolerance (dB) EIRP (dBm) MPE (W/m 2 ) LIMIT (W/m 2 ) 2412-2462 23.98 2.22 1 27.200 0.104 1 Note: 1. For conservativeness, the lowest uplink frequency of each band is used to determine the MPE limit of that band. ~ End of Report ~

Page: 1 of 119 TEST REPORT of FCC Part 15 Subpart C AND CANADA RSS-247 New Application; Class I PC; Class II PC Product : ESP32 WROOM-32 module Brand: Fanstel Model: ESP32M4; ESP32E4; ESP32M16; ESP32E16; ESP32F16; ESP32F4 Model Difference: Memory , Antenna . Please see page 5 for detail FCC ID: IC: X8WESP32M16 4100A-ESP32M16 FCC Rule Part: IC Rule Part: §15.247, Cat: DTS RSS-247 issue 2: 2017 RSS-Gen issue 5: 2018 Applicant: Fanstel Corporation, Taipei Address: 10F-10, No. 79, Sec. 1, Hsin Tai Wu Rd., Hsi-Chih, New Taipei City 221 Taiwan Test Performed by: International Standards Laboratory Corp. <LT Lab.> *Site Registration No. BSMI: SL2-IN-E-0013; MRA TW1036; TAF: 0997; IC: IC4067B-4; *Address: No. 120, Lane 180, San Ho Tsuen, Hsin Ho Rd. Lung-Tan Hsiang, Tao Yuan County 325, Taiwan *Tel : 886-3-407-1718; Fax: 886-3-407-1738 Report No.: ISL-20LR045FCDTS Issue Date : 2020/04/17 Test results given in this report apply only to the specific sample(s) tested and are tracea- ble to national or international standard through calibration of the equipment and evalu- ating measurement uncertainty herein. This report MUST not be used to claim product endorsement by TAF, NVLAP or any agency of the Government. This test report shall not be reproduced except in full, without the written approval of In- ternational Standards Laboratory Corp. -2 of 119- FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS VERIFICATION OF COMPLIANCE Applicant: Fanstel Corporation, Taipei Product Description: ESP32 WROOM-32 module Brand Name: Fanstel Model No.: ESP32M4; ESP32E4; ESP32M16; ESP32E16; ESP32F16; ESP32F4 Model Difference: Memory , Antenna . Please see page 5 for detail FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 Date of test: 2020/02/20 ~ 2020/04/10 Date of EUT Received: 2020/02/20 We hereby certify that: All the tests in this report have been performed and recorded in accordance with the standards de- scribed above and performed by an independent electromagnetic compatibility consultant, Interna- tional Standards Laboratory Corp. The test results contained in this report accurately represent the measurements of the characteristics and the energy generated by sample equipment under test at the time of the test. The sample equip- ment tested as described in this report is in compliance with the limits of above standards. Test By: Date: 2020/04/17 Weitin Chen / Senior Engineer Prepared By: Date: 2020/04/17 Gigi Yeh / Senior Engineer Approved By: Date: 2020/04/17 Jerry Liu / Technical Manager -3 of 119- FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS Version Version No. Date Description 00 2020/04/17 Initial creation of document -4 of 119- FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS Uncertainty of Measurement Description Of Test Uncertainty Conducted Emission (AC power line) 2.586 dB Field Strength of Spurious Radiation ≤30MHz: 2.96dB 30-1GHz: 4.22 dB 1-40 GHz: 4.08 dB Conducted Power 2.412 GHz: 1.30 dB Power Density 2.412 GHz:1.30 dB Frequency 0.0032% Time 0.01% DC Voltage 1% -5 of 119- FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS Table of Contents 1 General Information ................................................................................................................... 7 1.1 Related Submittal(s) / Grant (s) ................................................................................................... 10 1.2 Test Methodology ........................................................................................................................ 10 1.3 Test Facility .................................................................................................................................. 10 1.4 Special Accessories ...................................................................................................................... 10 1.5 Equipment Modifications ............................................................................................................. 10 2 SYSTEM TEST CONFIGURATION ..................................................................................... 11 2.1 EUT Configuration ...................................................................................................................... 11 2.2 EUT Exercise ............................................................................................................................... 11 2.3 Test Procedure .............................................................................................................................. 11 2.4 Configuration of Tested System ................................................................................................... 12 3 Summary of Test Results .......................................................................................................... 13 4 Description of Test Modes ........................................................................................................ 13 5 Conduced Emission Test .......................................................................................................... 14 5.1 Standard Applicable: .................................................................................................................... 14 5.2 Measurement Equipment Used: ................................................................................................... 14 5.3 EUT Setup: ................................................................................................................................... 14 5.4 Measurement Procedure: ............................................................................................................. 15 5.5 Measurement Result: ........................................................................................................…

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FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS APPENDIX 1 PHOTOGRAPHS OF SET UP FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS Radiated Emission Setup Photos Dipole Antenna FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS Radiated Emission Setup Photos Dipole Antenna FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS FCC ID: X8WESP32M16 IC: 4100A-ESP32M16 International Standards Laboratory Corp. Report Number: ISL-20LR045FCDTS Conducted Emission Setup Photos