Espressif Systems ESP32-WROOM-32 MCU Modules

Espressif Systems ESP32-WROOM-32 MCU Modules are powerful and generic Wi-Fi/BT/BLE MCU modules that target various applications. These modules target applications ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming, and MP3 decoding. The ESP32-WROOM-32U module is different from ESP32-WROOM-32D as it integrates a U.FL connector which needs to be connected to an external IPEX antenna.

The Espressif Systems ESP32-WROOM-32 MCU Modules use the ESP32-D0WD chip at the core. This SoC features two CPU cores that can be individually controlled, and the CPU clock frequency is adjustable from 80MHz to 240MHz. The 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.


  • Two low-power Xtensa® 32-bit LX6 microprocessors
  • ESP32-D0WD core
  • Supports multiple external QSPI Flash and SRAM chips
  • 32Mbits 3.3V SPI flash
  • 40MHz crystal
  • Onboard PCB antenna for ESP32-WROOM-32D
  • U.FL connector (which needs to be connected to an external IPEX antenna) for ESP32-WROOM-32U
  • Advanced power-management technologies


  • 802.11 b/g/n (802.11n up to 150Mbps) Wi-Fi protocol
  • BLUETOOTH® v4.2 BR/EDR and BLE
  • SD card, UART, SPI, SDIO, I2C, LED PWM, Motor PWM, I2S, and IR module interfaces
  • Hall sensor
  • 2.7V to 3.6V operating voltage supply
  • 80mA average operating current
  • -40°C to 85°C operating temperature range
Published: 2018-06-29 | Updated: 2022-10-05