ESP32-C3

ESP32-C3:

• A complete Wi-Fi subsystem that complies with
  IEEE 802.11b/g/n protocol and supports Station
  mode, SoftAP mode, SoftAP + Station mode,
  and promiscuous mode
• A Bluetooth LE subsystem that supports features
  of Bluetooth 5 and Bluetooth mesh
• State-of-the-art power and RF performance
  32-bit RISC-V single-core processor with a
  four-stage pipeline that operates at up to 160
  MHz
• 400 KB of SRAM (16 KB for cache) and 384 KB
  of ROM on the chip, and SPI, Dual SPI, Quad
  SPI, and QPI interfaces that allow connection to
  external flash
• 22 × programmable GPIOs
• 2 × 12-bit SAR ADCs, up to 6 channels
• 1 × temperature sensor
• 3 × SPI
• 2 × UART
• 1 × I2C
• 1 × I2S
• Remote control peripheral, with 2 transmit
  channels and 2 receive channels
• LED PWM controller, up to 6 channels
  General DMA controller, with 3 transmit channels
  and 3 receive channels
• 1 × TWAITM controller (compatible with ISO
  11898-1)