ESP32-D2WD- 2.4 GHz Wi-Fi & Bluetooth chip w/ 2Mbyte internal flash


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Manufacturer: Espressif Systems

Free shipping to the US on orders over $100
NOT recommended for new designs
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Product Information

Product Description

This product is NOT for new designs.


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The ESP32-D2WD has all the great features of the ESP32-D0WD plus adds 2 Mbytes of embedded on-chip flash. This embedded flash means that the entire application can be run on-chip with no external flash needed. The added flash also makes this compact 5x5 chip a powerhouse for the wearable's market or any other application where small size is needed.

The ESP32-D2WD also features dual microprocessors, (one for normal operation and one for low-power sleep mode), and has the combo Bluetooth (BT 4.2 and BLE) and Wi-Fi radios.

Key Features of the ESP21-D2WD

  • Small 5 x 5 mm package
  • 2Mbyte on-chip embedded flash
  • Ultra-low power consumption
  • 2.4 GHz Wi-Fi
  • Bluetooth 4.2 and BLE
  • Fine resolution clock gating
  • Dynamic power scaling
  • Multiple power modes
  • Built-in Antenna Switches

These features allow the support of leading industry smart home standards including Apple HomeKit.


Compare ESP32 chip series.


  • Built-In Antenna Switches
  • Power Amplifier
  • RF Balun
  • Low Noise Receive Amplifier
  • Power Management Modules
  • Ultra-Low Power Consumption
  • Compliant with Bluetooth v4.2 BR/EDR and BLE specification
  • Bluetooth Class 1, Class 2, and Class 3 transmitter without external power amplifier
  • BT 4.2 controller and host stack
  • 802.11 b/g/n/e/i Wi-Fi
  • Fine Resolution Clock Gating
  • Dynamic Power Scaling
  • Supports the industry leading smart home standards including Apple HomeKit

Peripherals and Sensors:

  • 12-bit SAR ADC up to 18 channels
  • 2 x 8-bit D/A convertors
  • 10 x touch sensors
  • On-chip temperature sensor
  • On-chip Hall sensor
  • 4 x SPI, 2 x I2S, 2 x I2C, 3 x UART
  • CAN 2.0
  • IR (TX/RX)
  • Motor PWM

Documents and Drivers


ESP32 Datasheet

ESP32 Technical Reference Manual

ESP32 Hardware Design Guidelines

ESP32 Audio Design Guidelines

ESP32 Bluetooth Networking User Guide

ESP32 Bluetooth Architecture

Espressif HomeKit SDK Product Brief

BT/BLE Coexistence Demo

ESP32 Instruction Set and Examples


ESP32 Phy Init Bin Parameter Configuration Guide

ESP32 Flash Encryption Guide


ESP32 RF Performance Test Demonstration

ESP32 Certification and Test

Flash Hardware Tools (ESP8266 & ESP32)


Chip Package

QFN 5x5


  • Infrared Remote Controller
  • DMA controllers
  • Bluetooth Link Controller
  • BT 4.2 Controller
  • SD/SDIO/MMC HOst Controller
  • PID Controller
  • Efuse Controller
  • Media Access Controller (MAC)
  • Pulse Width Modulation (PWM) controller


Dual Core


Xtensa® 32-bit LX6 microprocessors


5.0 x 5.0 x 0.85 mm


  • 4 x SPI, 2 x I2S, 2 x I2C, 3 x UART, CAN 2.0, IR (TX/RX)
  • Motor PWM, LED PWM (up to 16 channels)
  • 12-bit SAR ADC up to 18 channels, 2 x 8-bit D/A converters
  • 10 x touch sensors


  • 448 KByte ROM
  • 520 KByte SRAM
  • 8 KB SRAM in RTC
  • 1 kbit of eFuse
  • 2MByte embedded flash




48 Pin QFN package

Power Supply

2.2 V to 3.6 V


  • Wi-Fi: 802.11 b/g/n/d/e/i/k/r (802.11n up to 150 Mbps)
  • Wi-Fi: A-MPDU and A-MSDU aggregation and 0.4 guard interval support
  • Bluetooth: Bluetooth v4.2 BR/EDR and BLE specification
  • Network: IPv4, IPv6, SSL, TCP/UDP/HTTP/FTP/MQTT

Temperature Range

  • Operating: -40°C to +125°C (-40º to 257ºF)
  • Storage: -40ºC to 150ºC (-40º to 302ºF)


4 General-Purpose Timers

Watchdog Timer


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