User's Manual

1 PREFACE
Table 1: ESP-WROOM-32 Specifications
Categories Items Specifications
Wi-Fi
Standards FCC, CE, TELEC, KCC
Protocols
802.11 b/g/n/d/e/i/k/r (802.11n up to 150 Mbps)
A-MPDU and A-MSDU aggregation and 0.4 µs
guard interval support
Frequency range 2.4 ~ 2.5 GHz
Bluetooth
Protocols Bluetooth v4.2 BR/EDR and BLE specification
Radio
NZIF receiver with -98 dBm sensitivity
Class-1, class-2 and class-3 transmitter
AFH
Audio CVSD and SBC
Hardware
Module interface
SD card, UART, SPI, SDIO, I2C, LED PWM, Motor
PWM, I2S, I2C, IR
GPIO, capacitive touch sensor, ADC, DAC, LNA
pre-amplier
On-chip sensor Hall sensor, temperature sensor
On-board clock 26 MHz crystal, 32 kHz crystal
Operating voltage 2.2 ~ 3.6V
Operating current Average: 80 mA
Operating temperature range -40°C ~ 85°C *
Ambient temperature range Normal temperature
Package size
18 mm x 25.5 mm x 2.8 mm
Software
Wi-Fi mode Station/softAP/SoftAP+station/P2P
Security WPA/WPA2/WPA2-Enterprise/WPS
Encryption AES/RSA/ECC/SHA
Firmware upgrade
UART Download / OTA (via network) / download
and write firmware via host
Software development
Supports Cloud Server Development / SDK for
custom firmware development
Network protocols IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT
User configuration AT instruction set, cloud server, Android/iOS App
Note:
* ESP-WROOM-32 with high temperature range option (-40°C ~ 125°C) is available for custom order.
Espressif Systems 2 http://www.espressif.com