2AC7Z-ESP32PICOZEROWi-Fi & Bluetooth Internet of Things Module

ESP32-PICO-V3-ZERO User Manual Version 1.0 Espressif Systems Copyright © 2020 www.espr essif.com About ThisDocument This document provides the specifications for the ESP32-PICO-V3-ZERO module. Document Updates Please always refer to the latest version on https://www.espressif.com/en/support/download/documents. Revision History For revision history of this document, please refer to thelast page. Documentation Change Notification Espressif provides email notifications to keep customers updated on changes to technical documentation. Please subscribe atwww.espressif.com/en/subscribe. Certification Download certificates for Espressif products fromwww.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 © 2020 Espressif Systems (Shanghai) Co., Ltd. All rights reserved. Espressif Systems 1. Module Overview 1. Module Overview 1.1 Features MCU • ESP32 embedded, Xtensa ® dual-core 32-bit LX6 microprocessor, up to 240 MHz • 448 KB ROM for booting and core functions • 520 KB SRAM for data and instructions • 16 KB SRAM in RTC Wi-Fi • 802.11b/g/n20/n40 • Bit rate: 802.11n up to 150 Mbps • A-MPDU and A-MSDU aggregation • 0.4s guard interval support • Center frequency range of operating channel: 2412 ~ 2462 MHz Bluetooth ® • Bluetooth V4.2 BR/EDR and Bluetooth LE speci- fication • NZIF receiver with –97 dBm sensitivity • Class-1, class-2 and class-3 transmitter • AFH • CVSD and SBC Hardware • Interfaces: 3 × UART, I 2 C, I 2 S, SPI, SDIO, touch pin, EN pin, interrupt pin and other GPIOs • 40 MHz crystal oscillator • 4 MB SPI flash • Operating voltage/Power supply: 3.0~3.6 V • Operating temperature range: –40~85 °C • Dimensions: (16 × 23 × 2.3) mm Certification • Bluetooth certification: BQB • RF certification: FCC/CE-RED/SRRC/IC • Green certification: REACH/RoHS 1.2 Description The ESP32-PICO-V3-ZERO is a module that is based on ESP32-PICO-V3, a System-in-Package (SiP) device. It provides complete Wi-Fi and Bluetooth ® functionalities. The module integrates a 4 MB SPI flash. At the core of this module is the ESP32 chip, which is a single 2.4 GHz Wi-Fi and Bluetooth combo chip designed with TSMC’s 40 nm low-power technology. ESP32-PICO-V3-ZERO integrates all peripheral components seam- lessly, including a crystal oscillator, flash, filter capacitors and RF matching links in one single package. Module assembly and testing are already done at SiP level. As such, ESP32-PICO-V3-ZERO reduces the complexity of supply chain and improves control efficiency. With its ultra-small size, robust performance and low-energy consumption, ESP32-PICO-V3-ZERO is well suited for any space-limited or battery-operated applications, such as wearable electronics, medical equipment, sensors and other IoT products. Note: •For more information on ESP32, please refer to ESP32 User Manual. •For more information on ESP32-PICO-V3, please refer to ESP32-PICO-V3 User Manual. Espressif Systems 1. Module Overview 1.3 Applications • Generic Low-power IoT Sensor Hub • Generic Low-power IoT Data Loggers • Cameras for Video Streaming • Over-the-top (OTT) Devices • Speech Recognition • Image Recognition • Mesh Network • Home Automation • Smart Building • Industrial Automation • Smart Agriculture • Audio Applications • Health Care Applications • Wi-Fi-enabled Toys • Wearable Electronics • Retail & Catering Applications Espressif Systems 3. Pin Definitions 2.Pin Definitions 2.1 Pin Layout Pin 1 Pin 2 Pin 3 Pin 4 Pin 5 Pin 6 Pin 7 Pin 8 Pin 9 Pin 10 Pin 11 Pin 12 Pin 13 Pin 14 Pin 15 Pin 16 Pin 48 Pin 47 Pin 46 Pin 45 Pin 44 Pin 43 Pin 42 Pin 41 Pin 40 Pin 39 Pin 38 Pin 37 Pin 36 Pin 35 Pin 34 Pin 33 Pin 64Pin 63Pin 62Pin 61Pin 60Pin 59Pin 58Pin 57Pin 56Pin 55Pin 54Pin 53Pin 52Pin 51Pin 50Pin 49 Pin 17Pin 18Pin 19Pin 20Pin 21Pin 22Pin 23Pin 25Pin 26Pin 27Pin 28Pin 29Pin 30Pin 32 Pin 66 GND Pin 67 GND Pin 65 GND Pin 68 GND Pin 75 GND Pin 72 GND Pin 69 GND Pin 70 GND Pin 71 GND Pin 73 GND Pin 74 GND Pin 77 GND Pin 76 GND I34 I35 DBG_RXD/IO3 DBG_TXD/IO1 IO32 IO33 IO25 IO26 MTMS/IO14 MTDI/IO12 MTCK/IO13 GND MTDO/IO15 BOOT/IO0 IO4 IO2 IO5 IO20 EN VDD33 GND I38 INT_B/IO27 I39 U1RXD/IO22 GND VDD33 GND U1TXD/IO19 IO21 I37 I36 GND IO8 IO7 IO10 IO9 GND Pin 31Pin 24 GNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGND GNDGNDGNDGNDGNDGNDGNDGNDGNDGNDGND Antenna area Figure 1: Pin Layout of ESP32-PICO-V3-ZERO (Top View) Note: The pin diagram shows the approximate location of pins on the module. For the actual mechanical diagram, please refer to Figure7Physical Dimensions. 2.2 Pin Description The ESP32-PICO-V3-ZERO module has 77 pins. See pin definitions in Table1. Espressif Systems 2. Pin Definitions Table 1:Pin Definitions NameNo.TypeFunction I341IGPIO34 I352IGPIO35 DBG_RXD/IO33I/OGPIO3, Debugging UART RX DBG_TXD/IO04I/OGPIO1, Debugging UART TX IO325I/OGPIO32 IO336I/OGPIO33 IO257I/OGPIO25 IO268I/OGPIO26 MTMS/IO149I/OGPIO14, MTMS MTDI/IO1210I/OGPIO12, MTDI MTCK/IO1311I/OGPIO13, MTCK MTDO/IO1513I/OGPIO15, MTDO BOOT/IO014I/OGPIO0 IO415I/OGPIO4 IO216I/OGPIO2 IO517I/OGPIO5 IO2018I/OGPIO20. Seenote 1underthe table. EN19I High: On; enablesthe module Low: Off;the module powers off Note: Do notl…

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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: huan [email protected] FCC Authorization Date: 2020-03-23 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: Prod uct Manager

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: 2020-03-23 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-ESP32PICOZERO 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 Hu ang Title: Product Manager

Applicant ESPRESSIF SYSTEMS (SHANGHAI) CO., LTD FCC ID: 2AC7Z-ESP32PICOZERO 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- PICO-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-F i/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 ferrit es, 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 equipment c onnected 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 la beled 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-ESP32PICOZERO” Any similar wording that expresses the same meaning may be used. The Grantee may either 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 RF exposure requirements § 2.1091.If the device built into a host as a portable usage, the RF exposure evaluation may be required as specified by § 2.1093. Y Sincerely Yours, Signature: Typed or Printed Name: Jian Huang Title: Product Manager

EXHIBIT A - EUT EXTERNAL PHOTOGRAPHS

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

Bay Area Compliance Laboratories Corp. (Kunshan) Report No.: RSHD200323001-00B FCC Part 15.247 Page 12 of 76 FCC §1.1310 & §2.1091 –MAXIMUM PERMISSIBLE EXPOSURE (MPE) Applicable Standard According to subpart §2.1091 and subpart §1.1310, systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091) (B) Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (minutes) 0.3-1.34 614 1.63 *(100) 30 1.34-30 824/f 2.19/f *(180/f²) 30 30-300 27.5 0.073 0.2 30 300-1500 / / f/1500 30 1500-100,000 / / 1.0 30 f = frequency in MHz; * = Plane-wave equivalent power density; According to §1.1310 and §2.1091 RF exposure is calculated. Calculated Formulary: Predication of MPE limit at a given distance S = PG/4πR² = power density (in appropriate units, e.g. mW/cm 2 ); P = power input to the antenna (in appropriate units, e.g., mW); G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain; R = distance to the center of radiation of the antenna (appropriate units, e.g., cm); Bay Area Compliance Laboratories Corp. (Kunshan) Report No.: RSHD200323001-00B FCC Part 15.247 Page 13 of 76 Calculated Data: Mode Frequency Range (MHz) Antenna Gain Target Output Power Evaluation Distance (cm) Power Density (mW/cm 2 ) MPE Limit (mW/cm 2 ) (dBi) (numeric)(dBm)(mW) 802.11b 2412~2462 3.0 2.00 24.50 281.84 20 0.1121 1.0 802.11g 3.0 2.00 24.00 251.19 20 0.0999 1.0 802.11 n-HT20 3.0 2.00 23.50 223.87 20 0.0891 1.0 802.11 n-HT40 2422~2452 3.0 2.00 22.00 158.49 20 0.0631 1.0 BLE 2402~2480 3.0 2.00 6.50 4.47 20 0.0018 1.0 BT 2402~2480 3.0 2.00 9.00 7.94 20 0.0032 1.0 Note: 1. The target output power was declared by the manufacturer. 2. Wi-Fi and Bluetooth cannot transmit simultaneously. Conclusion: The EUT meets exemption requirement- RF exposure evaluation greater than 20cm distance specified in § 2.1091. If the device built into a host as a portable usage, the additional RF exposure evaluation may be required as specified by§ 2.1093.

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-ESP32PICOZERO Report Type: Original Report Product Type: Wi-Fi & Bluetooth Internet of Things Module Test Engineer: CK Huang Re port Number: RSHD200323001-00B Re port Date: 2020-04-17 Reviewed B y: Oscar Ye EMC Manager 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.: RSHD200323001-00B FCC Part 15.247 Page 2 of 76 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 .......................................................................................................... 14 APPLICABLE STANDARD ............................................................................................................................................ 14 ANTENNA CONNECTOR CONSTRUCTION .................................................................................................................... 14 FCC §15.207 (a) – AC LINE CONDUCTED EMISSIONS ..................................................................................... 15 APPLICABLE STANDARD ............................................................................................................................................ 15 EUT SETUP ................................................................................................................................................................ 15 EMI TEST RECEIVER SETUP ....................................................................................................................................... 15 TEST PROCEDURE ...................................................................................................................................................... 15 CORRECTED FACTOR & OVER LIMIT CALCULATION .................................................................................................. 16 TEST RESULTS SUMMARY .......................................................................................................................................... 16 TEST DATA ................................................................................................................................................................ 16 FCC §15.205, §15.209 & §15.247(d) – RADIATED EMISSIONS ........................................................................... 19 APPLICABLE STANDARD ............................................................................................................................................ 19 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)