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