ESPRESSIF ESP32-WROOM-32E Module 8M=64mbit

SKU: FA1053-1-0-9-0
Microcontroller

ESP32-D0WD-V3, Xtensa dual-core 32-bit LX6
Clock Speed

80 – 240 MHz
Flash Memory

8 MB (64 Mbit) Quad SPI
Wireless

Wi-Fi 802.11 b/g/n (150 Mbps), Bluetooth v4.2 BR/EDR + BLE
Antenna

Onboard PCB antenna
Operating Voltage

3.0 – 3.6 V
Operating Temperature

-40°C to +85°C
Dimensions

18.0 × 25.5 × 3.1 mm

The ESP32-WROOM-32E is a general-purpose Wi-Fi + Bluetooth + Bluetooth LE MCU module from Espressif Systems, built around the ESP32-D0WD-V3 chip. This version features 8MB (64Mbit) of SPI flash and an onboard PCB antenna, offering double the storage capacity of the standard 4MB variant for firmware, OTA update buffers, and data logging .

At the core of the module is a dual-core Xtensa 32-bit LX6 microprocessor running at up to 240 MHz. The two CPU cores can be individually controlled, and a low-power co-processor can monitor peripherals while the main cores are powered down — ideal for balancing performance and power consumption . The chip’s sleep current is below 5 µA, making it suitable for battery-powered wearable electronics and low-power sensor networks .

The module supports Wi-Fi 802.11 b/g/n with data rates up to 150 Mbps and Bluetooth v4.2 BR/EDR + BLE. Antenna output power reaches up to 20 dBm, ensuring maximum wireless range . The compact form factor (18.0 × 25.5 × 3.1 mm) and onboard PCB antenna make it easy to embed into space-constrained designs without external antenna components .

The ESP32-WROOM-32E integrates a rich set of peripheral interfaces including SD card, UART, SPI, SDIO, I2C, LED PWM, motor PWM, I2S, IR, pulse counter, GPIO, capacitive touch sensor, ADC, DAC, and TWAI® (compatible with ISO 11898-1, i.e., CAN Specification 2.0) . It operates from 3.0 to 3.6 V with an operating temperature range of -40°C to +85°C, and carries BQB Bluetooth certification, FCC/CE-RED/SRRC RF certification, and REACH/RoHS environmental certification .

Product Status Note: The ESP32-WROOM-32E is the current recommended replacement for the NRND (Not Recommended for New Designs) ESP32-WROOM-32D series. It uses the updated ESP32-D0WD-V3 chip and continues to receive manufacturing support .

Development support is extensive, with official support for Espressif’s ESP-IDF and the Arduino IDE through the Arduino-ESP32 core. The module is suitable for both individual makers and businesses purchasing for product development, smart home devices, industrial automation, and general-purpose IoT applications .

Features

  • ESP32-D0WD-V3 dual-core processor — Xtensa 32-bit LX6, up to 240 MHz, with adjustable frequency

  • 8MB SPI Flash — Doubled storage capacity for firmware, OTA buffers, and data logging

  • Onboard PCB antenna — Meandered Inverted-F Antenna for easy integration without external components

  • Integrated wireless — Wi-Fi 802.11 b/g/n (up to 150 Mbps) and Bluetooth v4.2 BR/EDR + BLE

  • Ultra-low sleep current — Below 5 µA for battery-powered applications

  • Rich peripheral set — SD card, UART, SPI, I2C, I2S, PWM, ADC, DAC, capacitive touch, TWAI® (CAN-compatible)

  • Up to 26 GPIOs — Including 5 strapping pins

  • Certified — BQB, FCC/CE-RED/SRRC, and REACH/RoHS certified for international markets

Technical Specifications 

# Parameter Specification
1 Microcontroller ESP32-D0WD-V3, Xtensa dual-core 32-bit LX6
2 Clock Speed 80 – 240 MHz
3 Flash Memory 8 MB (64 Mbit) Quad SPI
4 Wireless Wi-Fi 802.11 b/g/n (150 Mbps), Bluetooth v4.2 BR/EDR + BLE
5 Antenna Onboard PCB antenna
6 Operating Voltage 3.0 – 3.6 V
7 Operating Temperature -40°C to +85°C
8 Dimensions 18.0 × 25.5 × 3.1 mm

Usage

Getting Started

  1. Install the development environment — Install Arduino IDE with ESP32 board support, or set up ESP-IDF. Add the ESP32 board manager URL: https://espressif.github.io/arduino-esp32/package_esp32_index.json .

  2. Configure board parameters — In Arduino IDE, select “ESP32 Dev Module” or the appropriate ESP32 board definition .

  3. Connect the module — Use a USB-to-UART adapter (3.3V logic) connected to TX, RX, GND, and EN pins. The bare module requires an external 3.3V power supply .

  4. Upload your sketch — Select the correct port and board. If uploading fails, hold the BOOT button (GPIO0 to GND) during the “Connecting…” phase.

Typical Applications

  • Smart home devices — Connected appliances, lighting, and sensors

  • Industrial automation — Reliable wireless communication for equipment and monitoring systems

  • Low-power IoT sensor hubs — Battery-powered sensor networks with extended operational life

  • Audio devices — Voice encoding, music streaming, and MP3 decoding

  • Generic IoT data loggers — Data collection and transmission for remote monitoring

Notes for Business Buyers

  • Current recommended version — The WROOM-32E is the actively recommended generation, replacing the NRND WROOM-32D series .

  • Proven platform — Large community and extensive documentation support .

  • Certified — BQB, FCC/CE-RED/SRRC, and REACH/RoHS certified, simplifying international market access .

  • Suitable for bulk purchasing — Ideal for smart home, industrial IoT, and product development applications .

Q: What is the ESP32-WROOM-32E module used for?

It is a general-purpose Wi-Fi and Bluetooth MCU module for IoT applications, including smart home, industrial automation, low-power sensor networks, and audio devices .

Q: How much flash memory does this version have?

This version includes 8 MB (64 Mbit) of SPI flash. The WROOM-32E series is also available with 4MB and 16MB flash options .

Q: What is the difference between ESP32-WROOM-32D and ESP32-WROOM-32E?

The WROOM-32E uses the updated ESP32-D0WD-V3 chip, while the older WROOM-32D uses the ESP32-D0WD. The -32E is the current recommended version for new designs .

Q: Is this module compatible with the Arduino IDE?

Yes. It is supported through the Arduino-ESP32 core. Select “ESP32 Dev Module” or the appropriate board definition .

Q: What is the operating voltage?

The module operates from 3.0 to 3.6 V, with 3.3 V being the typical supply .

Q: Does it support low-power modes?

Yes. The chip’s sleep current is below 5 µA, making it suitable for battery-powered wearable electronics and sensor nodes .

Q: What communication interfaces are available?

The module provides UART, SPI, I2C, I2S, SDIO, PWM, ADC, DAC, capacitive touch, and TWAI® (CAN-compatible) .

Q: Is the ESP32-WROOM-32E recommended for new designs?

Yes. The WROOM-32E is the current recommended generation, replacing the NRND WROOM-32D series .

Q: What certifications does this module have?

It carries BQB Bluetooth certification, FCC/CE-RED/SRRC RF certification, and REACH/RoHS environmental certification .

Q: Can I purchase in bulk for a product development project?

Yes. The module is suitable for both individual users and business purchasing. For new designs, the WROOM-32E series is the actively recommended version .

Related products