2AC7Z-ESP32WROOM32EWi-Fi & Bluetooth Internet of Things Module

ESP32-WROOM-32E User Manual Version 0.1 Espressif Systems Copyright © 2019 www.espressif.com PRELIMINARY PRELIMINARY PRELIMINARY About This Document This document provides the specifications for the ESP32-WROOM-32E modules with PCB antenna. Revision History For revision history of this document, please refer to the last page. Documentation Change Notification Espressif provides email notifications to keep customers updated on changes to technical documentation. Please subscribe at www.espressif.com/en/subscribe. Certification Download certificates for Espressif products from www.espressif.com/en/certificates. Disclaimer and Copyright Notice Information in this document, including URL references, is subject to change without notice. THIS DOCUMENT IS PROVIDED AS IS WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABIL-ITY, NON-INFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL, SPECIFICATION OR SAMPLE. All liability, including liability for infringement of any proprietary rights, relating to use of information in this docu- ment is disclaimed. No licenses express or implied, by estoppel or otherwise, to any intellectual property rights are granted herein. The Wi-Fi Alliance Member logo is a trademark of the Wi-Fi Alliance. The Bluetooth logo is a registered trademark of Bluetooth SIG. All trade names, trademarks and registered trademarks mentioned in this document are property of their respective owners, and are hereby acknowledged. Copyright © 2019 Espressif Inc. All rights reserved. PRELIMINARY 1. Overview 1. Overview ESP32-WROOM-32E is a powerful, generic WiFi-BT-BLE MCU module that targets a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding. This is a SMD Module with 2.4 GHz PCB antenna on board. It reserves π tuning circuit for antenna impedance matching. It is with all GPIOs on the pin-out except the ones already used for connecting flash. The Module's working voltage can be range from 3.0 V to 3.6 V. Frequency range is 2400 MHz to 2483.5 MHz. External 40 MHz as clock source for system. There is also a 4 MB SPI flash for storing user programs and data. The ordering information of ESP32-WROOM-32E is listed as follows: Table 1: ESP32-WROOM-32E Ordering Information Module Chip embedded Flash PSRAM Module dimensions (mm) ESP32-WROOM-32E ESP32-D0WD- V3 4 MB 1 / (18.00 ± 0.10) X (25.50 ± 0.10) X (3.10 ± 0.10) mm (including metallic shield) Notes: 1. ESP32-WROOM-32E (PCB) with 8 MB flash or 16 MB flash is available for custom order. 2. For detailed ordering information, please see Espressif Product Ordering Information. 3. For dimensions of the IPEX connector, please see Chapter 10. At the core of the module is the ESP32-D0WD-V3 chip*. The chip embedded is designed to be scalable and adaptive. There are two CPU cores that can be individually controlled, and the CPU clock frequency is adjustable from 80 MHz to 240 MHz. The user may also power off the CPU and make use of the low-power co-processor to constantly monitor the peripherals for changes or crossing of thresholds. ESP32 integrates a rich set of peripherals, ranging from capacitive touch sensors, Hall sensors, SD card interface, Ethernet, high-speed SPI, UART, I²S and I²C. Note: * For details on the part numbers of the ESP32 family of chips, please refer to the document ESP32 Datasheet. The integration of Bluetooth, Bluetooth LE and Wi-Fi ensures that a wide range of applications can be targeted, and that the module is all-around: using Wi-Fi allows a large physical range and direct connection to the Internet through a Wi-Fi router, while using Bluetooth allows the user to conveniently connect to the phone or broadcast low energy beacons for its detection. The sleep current of the ESP32 chip is less than 5 A, making it suitable for battery powered and wearable electronics applications. The module supports a data rate of up to 150 Mbps, As such the module does offer industry-leading spec ifications and the best performance for electronic integration, range, power consumption, and connectivity. The operating system chosen for ESP32 is freeRTOS with LwIP; TLS 1.2 with hardware acceleration is built in as well. Secure (encrypted) over the air (OTA) upgrade is also supported, so that users can upgrade their products even after their release, at minimum cost and effort. Table 2 provides the specifications of ESP32-WROOM-32E. Espressif Systems 1 ESP32-WROOM-32E User Manual PRELIMINARY 1. Overview Test Reliablity HTOL/HTSL/uHAST/TCT/ESD 802.11 b/g/n20/n40 Wi-Fi Protocols A- MPDU and A-MSDU aggregation and 0.4 s guard in- terval support Frequency range 2.412 GHz ~ 2.462GHz Protocols Bluetooth v4.2 BR/EDR and BLE specification NZIF receiver with –97 dBm sensitivity Bluetooth Radio Class-1, class-2 and class-3 transmitter AFH Audio CVSD and SBC SD card, UART, SPI, SDIO, I 2 C, LED PWM, Motor PWM, Module interfaces I 2 S, IR, pulse counter, GPIO, capacitive touch sensor, ADC, DAC On-chip sensor Hall sensor Integrated crystal 40 MHz crystal Integrated SPI flash 4 MB Hardware Integrated PSRAM - Operating voltage/Power supply 3.0 V ~ 3.6 V Minimum current delivered by 500 mA power supply Recommended operating tem- –40 °C ~ 8 5 °C perature range Package size (18.00±0.10) mm × (31.40±0.10) mm × (3.30±0.10) mm Moisture sensitivity level (MSL) Level 3 Espressif Systems 2 ESP32-WROOM-32E User Manual V0.1 Specifications Categories Items Table 2: ESP32-WROOM-32E Specifications 2. Pin Definitions 2. Pin Definitions 2.1 Pin Layout Figure 1: Pin Layout of ESP32-WROOM-32E (Top View) Espressif Systems 3 ESP32-WROOM-32E Datasheet PRELIMINARY 2. Pin Definitions 2.2 Pin Description ESP32-WROOM-32E has 38 pins. See pin definitions in Table 3. Table 3: Pin Definitions Name No. Type Function GND 1 P Ground 3V3 2 P Power supply EN 3 I Module-enable signal. Active high. SENSOR_VP 4 I GPIO36, ADC1_C…

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QA-FR-170-B Company: ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD Add: Suite 204, Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, 201203 China Tel: (8621)61065209 Fax: (8621)61065209 E-mail: [email protected] FCC Authorization Date: 2020-02-18 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We, ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD, the undersigned, hereby authorizes Bay Area Compliance Laboratories Corporation to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: Typed or Printed Name: Jian Huang Title: PE

Company: ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD Add: Suite 204, Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, 201203 China Tel: (8621)61065209 Fax: (8621)61065209 E-mail: [email protected] FCC Confidential Authorization Date: 2020-02-18 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2AC7Z-ESP32WROOM32E To : whom it may concern, In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD hereby requests long-term confidential treatment of information accompanying this application as outlined below: Block Diagram Schematics Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature: Typed or Printed Name: Jian Huang Title: P E

Applicant ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD FCC ID: 2AC7Z-ESP32WROOM32E Section 15.212 Modular Transmitters Request for Modular Approval  Request for Limited Modular Approval   RequirementsEUT ConditionsComply(Y/N) Single Modular Approval Requirements 1 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. Refer to external photos. This module does have shield cover. Y 2 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. All inputs to the modules are buffered through logic or microprocessor inputs. Refer to Schematics. Y 3 The modular transmitter must have its own power supply regulation. The Module uses the chip ESP32- D0WD-V3 with built-in power management components, the module rated power is 3. 0-3.6Vpower, Refer to schematics. Y 4 The modular transmitter must comply with the antenna and transmission system requirements of §§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 §15.203 is not applicable to modules but can apply to limited modular approvals under paragraph (b) of this section. The modular transmitter has a PCB antenna arrangement for Wi-Fi/Bluetooth, Refer to internal photo. Y Company: ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD Add: Suite 204, Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, 201203 China Tel: (8621)61065209 Fax: (8621)61065209 E-mail: [email protected] 5 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 §15.207. AC or DC power lines and data input/output lines connected to the module must not contain fe rrites, unless they will be marketed with the module (see §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 equipmen t connected to the module during testing shall be unmodified and commercially available (see §15.31(i)). The modular transmitter is connected to the controlled board when testing. Please refer to setup photo. Y 6 If using a permanently affixed label, the modular transmitter must be labeled with its own FCC identification number, and, if the FCC identification number is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following:“ContainsTransmitter Module FCC ID: 2AC7Z-ESP32WROOM32E” Any similar wording that expresses t he same meaning may be used. The Grantee may eit her provide such a label, an example of which must be included Refer to the label. Y in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization. 7 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. Refer to manual Y 8 The modular transmitter must comply with any applicable RF exposure requirements in its final configuration. The EUT comply with any applicable RF exposure requirements in its final configuration. Y Sincerely Yours, Signature: Typed or Printed Name: Jian Huang Title: PE

EXHIBIT A - EUT EXTERNAL PHOTOGRAPHS

EXHIBIT B - EUT INTERNAL PHOTOGRAPHS 2.4G WiFi/Bluetooth Antenna

Note: This test report is prepared for the customer shown above and for the device described herein. It may not be duplicated or used in part without prior written consent from Bay Area Compliant Laboratories Corp. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. FCC PART 15.247 TEST REPORT For ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD Suite 204, Block 2, 690 Bibo Road, Zhang Jiang Hi-Tech Park, Shanghai, 201203 China FCC ID: 2AC7Z-ESP32WROOM32E Report Type: Original Report Product Type: Wi-Fi & Bluetooth Internet of Things Module Test Engineer: Chao Gao Re port Number: RSHD200218007-00B Re port Date: 2020-04-02 Reviewed B y: Oscar Ye EMC Mana ger Prepared By: Bay Area Compliance Laboratories Corp. (Kunshan) No.248 Chenghu Road, Kunshan, Jiangsu province, China Tel: +86-0512-86175000 Fax: +86-0512-88934268 www.baclcorp.com.cn Bay Area Compliance Laboratories Corp. (Kunshan) Report No.: RSHD200218007-00B FCC Part 15.247 Page 2 of 75 TABLE OF CONTENTS GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 RELATED SUBMITTAL(S)/GRANT(S) ............................................................................................................................. 4 TEST METHODOLOGY .................................................................................................................................................. 5 MEASUREMENT UNCERTAINTY .................................................................................................................................... 5 TEST FACILITY ............................................................................................................................................................. 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EUT EXERCISE SOFTWARE .......................................................................................................................................... 6 SPECIAL ACCESSORIES ................................................................................................................................................. 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 7 EXTERNAL I/O CABLE .................................................................................................................................................. 7 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 8 SUMMARY OF TEST RESULTS ............................................................................................................................. 10 TEST EQUIPMENT LIST ......................................................................................................................................... 11 FCC §1.1310 & §2.1091 –MAXIMUM PERMISSIBLE EXPOSURE (MPE) ....................................................... 12 FCC §15.203 – ANTENNA REQUIREMENT .......................................................................................................... 13 APPLICABLE STANDARD ............................................................................................................................................ 13 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 13 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 14 APPLICABLE STANDARD ............................................................................................................................................ 14 EUT SETUP ................................................................................................................................................................ 14 EMI TEST RECEIVER SETUP ....................................................................................................................................... 14 TEST PROCEDURE ...................................................................................................................................................... 14 CORRECTED FACTOR & OVER LIMIT CALCULATION .................................................................................................. 15 TEST RESULTS SUMMARY .......................................................................................................................................... 15 TEST DATA ................................................................................................................................................................ 15 FCC §15.205, §15.209 & §15.247(d) – RADIATED EMISSIONS ........................................................................... 18 APPLICABLE STANDARD ............................................................................................................................................ 18 EUT SETUP .................................................…

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EXHIBIT C - TEST SETUP PHOTOGRAPHS Conducted Emissions (Front View) Conducted Emissions (Side View) Radiated Emissions (Below 1GHz) Radiated Emissions (Above 1GHz)