Espressif 
CPU and OnChip Memory
• ESP32-C3 embedded, 32bit RISC-V single-core processor, up to 160MHz
• 384KB ROM
• 400KB SRAM (16KB for cache)
• 8KB SRAM in RTC
WiFi
• IEEE 802.11 b/g/n-compliant
• Center frequency range of operating channel: 2412 ~ 2484MHz
• Supports 20 MHz, 40MHz bandwidth in 2.4GHz band
• 1T1R mode with data rate up to 150Mbps
• 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
• 802.11mc FTM
Bluetooth
• Bluetooth LE: Bluetooth 5, Bluetooth mesh
• Speed: 125Kbps, 500Kbps, 1Mbps, 2Mbps
• Advertising extensions
• Multiple advertisement sets
• Channel selection algorithm #2
• Internal co-existence mechanism between Wi-Fi and Bluetooth to share the same antenna
Peripherals
• GPIO, 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
Integrated Components on Module
• 40MHz crystal oscillator
• SPI flash
Antenna Options
• On-board PCB antenna (ESP32-C3-WROOM-02)
• External antenna via a connector (ESP32-C3-WROOM-02U)
Operating Conditions
• Operating voltage/Power supply: 3.0 ~ 3.6V
• Operating ambient temperature: –40 ~ 85°C
