1.1 Features

CPU and On-Chip Memory

• ESP8685H4 embedded, 32-bit RISC-V

single-core processor, up to 160 MHz

• 384 KB ROM

• 400 KB SRAM (16 KB for cache)

• 8 KB SRAM in RTC

• 4 MB flash in chip package

Wi-Fi

• IEEE 802.11b/g/n-compliant

• Center frequency range of operating channel:

2412 ~ 2484 MHz

• Supports 20 MHz, 40 MHz bandwidth in 2.4

GHz band

• 1T1R mode with data rate up to 150 Mbps

• Wi-Fi Multimedia (WMM)

• TX/RX A-MPDU, TX/RX A-MSDU

• Immediate Block ACK

• Fragmentation and defragmentation

• Transmit opportunity (TXOP)

• Automatic Beacon monitoring (hardware TSF)

• 4 × virtual Wi-Fi interfaces

• Simultaneous support for Infrastructure BSS in

Station mode, SoftAP mode, Station + SoftAP

mode, and promiscuous mode

Note that when ESP8685 scans in Station

mode, the SoftAP channel will change along

with the Station channel

• 802.11mc FTM

Bluetooth®

• Bluetooth LE: Bluetooth 5, Bluetooth mesh

• Speed: 125 Kbps, 500 Kbps, 1 Mbps, 2 Mbps

• Advertising extensions

• Multiple advertisement sets

• Channel selection algorithm #2

Peripherals

• 15 or 5 GPIOs

– 3 strapping GPIOs

• SPI, UART, I2C, I2S, remote control peripheral,

LED PWM controller, general DMA controller,

TWAI® controller (compatible with ISO 11898-1,

i.e. CAN Specification 2.0), USB Serial/JTAG

controller, temperature sensor, SAR ADC,

general-purpose timers, watchdog timers

Note:

* Please refer to ESP8685 Series Datasheet for

detailed information about the module peripherals.

Integrated Components on Module

• 40 MHz crystal oscillator

Antenna Options

• On-board PCB antenna

Operating Conditions

• Operating voltage/Power supply: 3.0 ~ 3.6 V

• Operating ambient temperature: –40 ~ 105 °C

Certification

• RF certification: See certificates

• Green certification: RoHS/REACH

Test

• HTOL/HTSL/uHAST/TCT/ESD