ESPRESSIF SYSTEMS ESP32WROVERB User Manual

ESP32-WROVER-B/ESP32-WROVER-IB

Datasheet

Version 1.0

Espressif Systems

About This Guide

This document provides the specifications for the ESP32-WROVER-B/ESP32-WROVER-IB modules.

Revision History

For the revision history of this document, please refer to the last page.

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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.

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owners, and are hereby acknowledged.

Copyright © 2018 Espressif Inc. All rights reserved.

Contents

1 Overview 1

2 Pin Definitions 3

2.1 Pin Layout 3

2.2 Pin Description 4

2.3 Strapping Pins 5

3 Functional Description 7

3.1 CPU and Internal Memory 7

3.2 External Flash and SRAM 7

3.3 Crystal Oscillators 7

3.4 RTC and Low-Power Management 8

4 Peripherals and Sensors 9

5 Electrical Characteristics 10

5.1 Absolute Maximum Ratings 10

5.2 Recommended Operating Conditions 10

5.3 DC Characteristics (3.3V, 25°C) 10

5.4 Wi-Fi Radio 11

5.5 BLE Radio 11

5.5.1 Receiver 11

5.5.2 Transmitter 12

6 Dimensions

7 U.FL Connector Dimensions

8 Learning Resources

8.1 Must-Read Documents

8.2 Must-Have Resources

13

14

15

15

15

Revision History 16

List of Tables

1 ESP32-WROVER-B/ESP32-WROVER-IB vs. ESP32-WROVER/ESP32-WROVER-I 1

2 ESP32-WROVER-B/ESP32-WROVER-IB Specifications 2

3 Pin Definitions 4

4 Strapping Pins 5

5 Power Consumption by Power Modes 8

6 Absolute Maximum Ratings 10

7 Recommended Operating Conditions 10

8 DC Characteristics 10

9 Wi-Fi Radio Characteristics 11

10 Receiver Characteristics – BLE 11

11 Transmitter Characteristics – BLE 12

List of Figures

1 ESP32-WROVER-B/ESP32-WROVER-IB Pin Layout 3

2 ESP32-WROVER-B/ESP32-WROVER-IB Schematics 13

3 ESP32-WROVER-B/ESP32-WROVER-IB Peripheral Schematics 14

4 ESP32-WROVER-B Dimensions 15

5 ESP32-WROVER-IB Dimensions 15

6 ESP32-WROVER-B/ESP32-WROVER-IB U.FL Connector Dimensions 16

1. OVERVIEW

1. Overview

ESP32-WROVER-B 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.

At the core of this module is the ESP32-D0WD chip*. ESP32-WROVER-B has an additional SPI Pseudo static

RAM (PSRAM) of 64 Mbits. As such, ESP32-WROVER-B features both 4 MB external SPI flash and 8 MB external

PSRAM.

The ESP32-WROVER-B module has a PCB antenna, while the ESP32-WROVER-IB uses an IPEX antenna. For

dimentions of the IPEX connector, please see Chapter 9. The information in this datasheet is applicable to

both of the two modules.

Table 1: ESP32-WROVER-B/ESP32-WROVER-IB

Module Chip embedded Flash PSRAM Antenna Dimensions (mm)

ESP32-WROVER-B ESP32-D0WD 4 MB 8 MB PCB antenna (18±0.15)x(31.4±0.2)x(3.5±0.15)

ESP32-WROVER-IB ESP32-D0WD 4 MB 8 MB IPEX antenna (18±0.15)x(31.4±0.2)x(3.5±0.15)

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 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 number of the ESP32 series, 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 future proof: 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 5µA, making it suitable

for battery powered and wearable electronics applications. ESP32 supports a data rate of up to 150 Mbps,

and 20.5 dBm output power at the antenna to ensure the widest physical range. As such the chip does offer

industry-leading specifications 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 developers can continually upgrade

their products even after their release.

Table 2 provides the specifications of ESP32-WROVER-B/ESP32-WROVER-IB.

Espressif Systems 1 ESP32-WROVER-B Datasheet V1.0

1. OVERVIEW

Table 2: ESP32-WROVER-B/ESP32-WROVER-IB Specifications

Categories Items Specifications

802.11 b/g/n20/n40

Wi-Fi

Protocols

Frequency range

A-MPDU and A-MSDU aggregation and 0.4 µs guard in-

terval support

2412-2462MHz(802.11b/g/n-HT20),2422-2452MHz(802.11n-HT40)

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, I2C, LED PWM, Motor PWM,

Module interface

I2S, IR

GPIO, capacitive touch sensor, ADC, DAC

On-chip sensor Hall sensor

On-board clock 40 MHz crystal

Hardware

Operating voltage/Power supply 2.7 ~ 3.6V

Operating current Average: 80 mA

Minimum current delivered by

power supply

Recommended operating tem-

perature range

500 mA

–40°C ~ 85°C

Package size (18±0.15) mm x (31.4±0.2) mm x (3.5±0.15) mm

Wi-Fi mode Station/SoftAP/SoftAP+Station/P2P

Security WPA/WPA2/WPA2-Enterprise/WPS

Encryption AES/RSA/ECC/SHA

UART Download / OTA (via network) / download and write

firmware via host

Supports Cloud Server Development / SDK for custom

firmware development

Software

Firmware upgrade

Software development

Network protocols IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT

User configuration AT instruction set, cloud server, Android/iOS app

Espressif Systems 2 ESP32-WROVER-B Datasheet V1.0