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ESP32-D0WD - Wi-Fi & Bluetooth Combo Chip



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The ESP32-D0WD features dual microprocessors, one for normal operation, and one for low-power sleep mode, in an ultra-compact 5 x 5 mm package. Suitable for battery powered applications, this combo chip has both Bluetooth (BT 4.2 and BLE) and Wi-Fi radios.

This combination is great for gateways, as well as for using BLE for direct access from smartphones/tablets and using Wi-Fi for connected applications.

Key Features

  • Small 5 x 5 mm package
  • Ultra-low power consumption
  • Bluetooth
  • 2.4 GHz Wi-Fi
  • 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.

Learn more and compare ESP32 SOC chips.

ESP21-D0WD Features
  • 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
  • Wi-Fi Antenna diversity and selection
  • Fine Resolution Clock Gating
  • Dynamic Power Scaling

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

  • Supports the industry leading smart home standards including Apple HomeKit

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
Core Dual Core
Cpu Xtensa® 32-bit LX6 microprocessors
Dimensions 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
Mpn ESP32-D0WD
Pins 48 Pin QFN package
Power 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)
Timers 4 General-Purpose Timers
Watchdog timer 3 Watchdog Timers


ESP32 Datasheet Download (PDF)
ESP32 Technical Reference Manual Download (PDF)
ESP32 Hardware Design Guidelines Download (PDF)
ESP32 Bluetooth Networking User Guide Download (PDF)
ESP32 Bluetooth Architecture Download (PDF)
Espressif HomeKit SDK Product Brief Download (PDF)
BT/BLE Coexistence Demo Download (PDF)
ESP32 Instruction Set and Examples Download (PDF)
ESP32 FAQs Download (PDF)
ESP32 Flash Encryption Guide  Espressif Website (HTML)


ESP32 RF Performance Test Demonstration Download (ZIP)
ESP32 Certification and Test Download (ZIP)


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