Features / Specs
- Manufacturer: Ai Thinker (Genuine – purchased from Ai Thinker)
- Main Module: Ai Thinker ESP-C3-32S C3-4M (Embedded ESP32-C3 with built-in 4MB Flash – 32-Bit RISC-V Single-Core Processor, Up to 160MHz)
- Flash Memory: 32-Mbit (4-MB)
- ROM: 384kB
- SRAM: 400kB (16kB for Cache)
- SRAM in RTC: 8kB
- USB to UART Interface IC: WCH CH340C (Up to 3Mbps) (Default Baud Rate: 115200 bps)
- USB Connector Type: Micro USB Female Socket
- Supply Voltage (> 500mA): 5VDC (Micro USB Socket) / 5VDC (Pin Connection) / 3.3VDC (Pin Connection)
- ESP Module Operating Voltage: 3.3VDC
- On-Board Regulator: CJT1117B (Fixed 3.3V Version)
- Available Peripherals: UART (Default 3.3VDC) / I2C / I2S / SPI / ADC / GPIO
- Indication LEDs: RGB LED (R: IO3, G: IO4, B: IO5) / Cool Colour LED: IO19 / Warm Colour LED: IO18
- Operating Temperature Range: ~(-40℃ to +85℃)
- Module Certifications: CE / FCC
- Number Of Pins: 30
- Pin Pitch: 2.54mm
- Dimensions: ~(49.3mm x 25.8mm x 6mm)
- Spacing Between Pin Rows (Pin Centre to Centre): ~22.86mm (Breadboard Compatible)
- WiFi Protocols: 802.11 b/g/n (1T1R mode with data rate up to 150 Mbps)
- Frequency Band: 2.4GHz (Supports 20MHz and 40Mhz Bandwidth)
- Wireless Network Modes: Station / SoftAP / SoftAP + Station / Promiscuous Mode
- Hardware Features: 22x Programmable GPIO’s / 3x SPI / 1x I2S / 2x UART / 1x I2C / LED PWM Controller (Up to 6 Channels) / etc
- WiFi Security: Secure Boot / Flash Encryption / 4k-bit OTP, up to 1792 bits for users / Cryptographic Hardware Acceleration
- Bluetooth Protocols: Bluetooth LE – Bluetooth 5, Bluetooth Mesh
- Power: Up to 20dBm
- Speeds: 125kbps / 500kbps / 1MBps / 2MBps
- Advertising Features: Advertising Extensions / Multiple Advertising Sets
- Other Features: Internal co-existence mechanism allowing WiFi and Bluetooth to share a single antenna