Datasheet
Table Of Contents
- Product Overview
- 1 ESP32-C3 Series Comparison
- 2 Pin Definition
- 3 Functional Description
- 3.1 CPU and Memory
- 3.2 System Clocks
- 3.3 Analog Peripherals
- 3.4 Digital Peripherals
- 3.4.1 General Purpose Input / Output Interface (GPIO)
- 3.4.2 Serial Peripheral Interface (SPI)
- 3.4.3 Universal Asynchronous Receiver Transmitter (UART)
- 3.4.4 I2C Interface
- 3.4.5 I2S Interface
- 3.4.6 Remote Control Peripheral
- 3.4.7 LED PWM Controller
- 3.4.8 General DMA Controller
- 3.4.9 USB Serial/JTAG Controller
- 3.4.10 TWAI® Controller
- 3.5 Radio and Wi-Fi
- 3.6 Bluetooth LE
- 3.7 Low Power Management
- 3.8 Timers
- 3.9 Cryptographic Hardware Accelerators
- 3.10 Physical Security Features
- 3.11 Peripheral Pin Configurations
- 4 Electrical Characteristics
- 5 Package Information
- 6 Related Documentation and Resources
- Revision History
3 Functional Description
Table 10: Peripheral Pin Configurations
Interface Signal Pin Function
ADC ADC1_CH0 XTAL_32K_P Two 12-bit SAR ADCs
ADC1_CH1 XTAL_32K_N
ADC1_CH2 GPIO2
ADC1_CH3 GPIO3
ADC1_CH4 MTMS
ADC2_CH0 MTDI
JTAG MTDI MTDI JTAG for software debugging
MTCK MTCK
MTMS MTMS
MTDO MTDO
UART U0RXD_in Any GPIO pins Two UART channels with hardware flow control
and GDMAU0CTS_in
U0DSR_in
U0TXD_out
U0RTS_out
U0DTR_out
U1RXD_in
U1CTS_in
U1DSR_in
U1TXD_out
U1RTS_out
U1DTR_out
I2C I2CEXT0_SCL_in Any GPIO pins One I2C channel in slave or master mode
I2CEXT0_SDA_in
I2CEXT1_SCL_in
I2CEXT1_SDA_in
I2CEXT0_SCL_out
I2CEXT0_SDA_out
I2CEXT1_SCL_out
I2CEXT1_SDA_out
LED PWM ledc_ls_sig_out0~5 Any GPIO pins Six independent PWM channels
I2S I2S0O_BCK_in Any GPIO pins Stereo input and output from/to the audiocodec
I2S_MCLK_in
I2SO_WS_in
I2SI_SD_in
I2SI_BCK_in
I2SI_WS_in
I2SO_BCK_out
I2S_MCLK_out
I2SO_WS_out
I2SO_SD_out
I2SI_BCK_out
I2SI_WS_out
Espressif Systems 29
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ESP32-C3 Series Datasheet v1.2