1.1 Features

CPU and On-Chip Memory

• ESP32 embedded, Xtensa dual-core 32-bit LX6

microprocessor, up to 240 MHz

• 448 KB ROM

• 520 KB SRAM

• 16 KB SRAM in RTC

Wi-Fi

• 802.11b/g/n

• Bit rate: 802.11n up to 150 Mbps

• A-MPDU and A-MSDU aggregation

• 0.4 μs guard interval support

• Center frequency range of operating channel:

2412~2484 MHz

Bluetooth

• Bluetooth v4.2 BR/EDR and Bluetooth LE

specification

• Class-1, class-2 and class-3 transmitter

• Adaptive Frequency Hopping (AFH)

• CVSD and SBC for audio codec

Peripherals

• 2 × UART (one for connection to the host and

the other for debugging), EN pin, and interrupt

pin

Integrated Components on Module

• 40 MHz crystal oscillator

• 4 MB SPI flash

Antenna Options

• On board PCB antenna with an RF test

connector

Note:

This connector is for test only, and must not be

used for connecting an external antenna.

Operating Conditions

• Operating voltage/Power supply: 3.0 ~ 3.6 V

• Operating temperature range: –40 ~ 85 °C

Certification

• Bluetooth certification: BQB (ID: D050108)

• RF certification: See Certification

• Green certification: REACH/RoHS