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
Interface Signal Pin Function
I2SO_SD1_out
Remote Control
Peripheral
RMT_SIG_IN0~1 Any GPIO pins Two channels for an IR transceiver of various
waveformsRMT_SIG_OUT0~1
SPI0/1 SPICLK_out_mux SPICLK Support Standard SPI, Dual SPI, Quad SPI, and
QPI that allow connection to external flashSPICS0_out SPICS0
SPICS1_out Any GPIO pins
SPID_in/_out SPID
SPIQ_in/_out SPIQ
SPIWP_in/_out SPIWP
SPIHD_in/_out SPIHD
SPI2 FSPICLK_in/_out_mux Any GPIO pins
• Master mode and slave mode of SPI, Dual
SPI, Quad SPI, and QPI
• Connection to external flash, RAM, and
other SPI devices
• Four modes of SPI transfer format
• Configurable SPI frequency
• 64-byte FIFO or GDMA buffer
FSPICS0_in/_out
FSPICS1~5_out
FSPID_in/_out
FSPIQ_in/_out
FSPIWP_in/_out
FSPIHD_in/_out
USB Serial/JTAG USB_D+ GPIO19 USB-to-serial converter, and USB-to-JTAG
converterUSB_D- GPIO18
TWAI twai_rx Any GPIO pins Compatible with ISO 11898-1 protocol
twai_tx
twai_bus_off_on
twai_clkout
Espressif Systems 30
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ESP32-C3 Series Datasheet v1.2