ESPRESSIF SYSTEMS ESPWROOM32DC User Manual
ESP32-WROOM-32DC
Datasheet
Prerelease version 0.1
Espressif Systems
Copyright © 2018
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www.espressif.com
About This Document
This document provides the specifications for the ESP32-WROOM-32DC module.
Revision History
For revision history of this document, please refer to the last page.
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IS PROVIDED AS IS WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF
MERCHANTABILITY, 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
document 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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respective owners, and are hereby acknowledged.
Copyright © 2018 Espressif Inc. All rights reserved.
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Contents
1 Overview 1
2 Pin Definitions 3
2.1 Pin Layout 3
2.2 Pin Description 3
2.3 Strapping Pins 4
3 Functional Description 6
3.1 CPU and Internal Memory 6
3.2 External Flash and SRAM 6
3.3 Crystal Oscillators 6
3.4 RTC and Low-Power Management 7
4 Peripherals and Sensors 8
5 Electrical Characteristics
5.1 Absolute Maximum Ratings
5.2 Recommended Operating Conditions
5.3 DC Characteristics (3.3 V, 25 °C)
5.4 Reflow Profile
6 Physical Dimensions
7 Recommended PCB Land Pattern
8 Learning Resources
8.1 Must-Read Documents
8.2 Must-Have Resources
Revision History
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List of Tables
1 ESP32-WROOM-32DC Specifications
2 Pin Definitions
3 Strapping Pins
4 Absolute Maximum Ratings
5 Recommended Operating Conditions
6 DC Characteristics (3.3 V, 25 °C)
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List of Figures
1 ESP32-WROOM-32DC Pin Layout (Top View)
2 Reflow Profile
3 Physical Dimensions of ESP32-WROOM-32DC
4 Recommended PCB Land Pattern
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1. Overview
1. Overview
ESP32-WROOM-32DC is a powerful, generic Wi-Fi+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*. 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 µA, making it suitable for
battery powered and wearable electronics applications. The module supports a data rate of up to 150 Mbps,
and 20 dBm output power at the antenna to ensure the widest physical range. As such the module 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 upgrade their
products even after their release, at minimum cost and effort.
Table 1 provides the specifications of ESP32-WROOM-32DC.
Table 1: ESP32-WROOM-32DC Specifications
Categories Items Specifications
802.11 b/g/n (802.11n up to 150 Mbps)
Wi-Fi
Bluetooth
Protocols
Frequency range 2.4 GHz ~ 2.5 GHz
Protocols Bluetooth v4.2 BR/EDR and BLE specification
Radio
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Audio CVSD and SBC
Hardware Module interface
On-chip sensor Hall sensor
On-board clock 40 MHz crystal
A-MPDU and A-MSDU aggregation and 0.4 µs guard
interval support
NZIF receiver with –97 dBm sensitivity
AFH
SD card, UART, SPI, SDIO, I2C, LED PWM, Motor
PWM, I2S, IR, pulse counter, GPIO, capacitive touch
sensor, ADC, DAC
Espressif Systems 1 ESP32-WROOM-32DC Datasheet V0.1
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