User's Manual

1 Overview
1 Overview
1.1 Module Overview
ESP8685-WROOM-04 is a general-purpose Wi-Fi and Bluetooth LE module. The rich set of peripherals and a small
size make this module an ideal choice for smart homes, industrial automation, health care, consumer electronics,
etc.
ESP8685-WROOM-04 comes with a PCB antenna.
Table 1: ESP8685WROOM04 Specifications
Categories Parameters Specifications
Wi-Fi
Protocols
IEEE 802.11 b/g/n (1T1R mode with data rate up to
150 Mbps)
Frequency range 2412 ~ 2462 MHz
Bluetooth
®
Protocols Bluetooth
®
LE: Bluetooth 5 and Bluetooth mesh
Radio
Class-1, class-2 and class-3 transmitter
AFH
Audio CVSD and SBC
Hardware
Module interfaces
GPIO, SPI, UART, I2C, I2S, remote control peripheral,
LED PWM controller, general DMA controller, TWAI
®
controller (compatible with ISO 11898-1), USB Seri-
al/JTAG controller, temperature sensor, SAR ADC
Integrated crystal 40 MHz crystal oscillator
Operating voltage/Power supply 3.0 V ~ 3.6 V
Operating current Average: 80 mA
Minimum current delivered by power
supply
500 mA
Ambient temperature –40 °C ~ +105 °C
Moisture sensitivity level (MSL) Level 3
Espressif Systems 4 ESP8685-WROOM-04 User Manual v0.1