Datasheet ESP32-C3 (Espressif)

ESP32-C3 Series Datasheet Version 2.3 Ultra-Low-Power SoC with RISC-V Single-Core CPU 2.4 GHz Wi-Fi (802.11b/g/n) and Bluetooth® 5 (LE) Optional flash in the chip’s package up to 8 MB QFN32 (5×5 mm) package Including: ESP32-C3 ESP32-C3FN4 – End of life (EOL) ESP32-C3FH4 ESP32-C3FH4AZ – Not Recommended for New Designs (NRND) ESP32-C3FH4X – Recommended ESP32-C3FH8X – Sample www.espressif.com Document Outline Product Overview Features Applications 1 ESP32-C3 Series Comparison 1.1 Nomenclature 1.2 Comparison 1.3 Chip Revision 2 Pins 2.1 Pin Layout 2.2 Pin Overview 2.3 IO Pins 2.3.1 IO MUX Functions 2.3.2 Analog Functions 2.3.3 Restrictions for GPIOs 2.3.4 Peripheral Pin Assignment 2.4 Analog Pins 2.5 Power Supply 2.5.1 Power Pins 2.5.2 Power Scheme 2.5.3 Chip Power-up and Reset 2.6 Pin Mapping Between Chip and Flash 3 Boot Configurations 3.1 Chip Boot Mode Control 3.2 ROM Messages Printing Control 4 Functional Description 4.1 System 4.1.1 Microprocessor and Master 4.1.1.1 High-Performance CPU 4.1.1.2 GDMA Controller 4.1.2 Memory Organization 4.1.2.1 Internal Memory 4.1.2.2 External Memory 4.1.2.3 Cache 4.1.2.4 eFuse Controller 4.1.3 System Components 4.1.3.1 IO MUX and GPIO Matrix 4.1.3.2 Reset 4.1.3.3 Clock 4.1.3.4 Interrupt Matrix 4.1.3.5 System Timer 4.1.3.6 Power Management Unit 4.1.3.7 Timer Group 4.1.3.8 Watchdog Timers 4.1.3.9 XTAL32K Watchdog Timers (XTWDT) 4.1.3.10 Permission Control 4.1.3.11 World Controller (WCL) 4.1.3.12 System Registers 4.1.3.13 Debug Assistant 4.1.4 Cryptography and Security Component 4.1.4.1 AES Accelerator 4.1.4.2 HMAC Accelerator 4.1.4.3 RSA Accelerator 4.1.4.4 SHA Accelerator 4.1.4.5 Digital Signature 4.1.4.6 External Memory Encryption and Decryption 4.1.4.7 Random Number Generator 4.1.4.8 Clock Glitch Detection 4.2 Peripherals 4.2.1 Connectivity Interface 4.2.1.1 UART Controller 4.2.1.2 SPI Controller 4.2.1.3 I2C Controller 4.2.1.4 I2S Controller 4.2.1.5 USB Serial/JTAG Controller 4.2.1.6 Two-wire Automotive Interface 4.2.1.7 LED PWM Controller 4.2.1.8 Remote Control Peripheral 4.2.2 Analog Signal Processing 4.2.2.1 SAR ADC 4.2.2.2 Temperature Sensor 4.3 Wireless Communication 4.3.1 Radio 4.3.1.1 2.4 GHz Receiver 4.3.1.2 2.4 GHz Transmitter 4.3.1.3 Clock Generator 4.3.2 Wi-Fi 4.3.2.1 Wi-Fi Radio and Baseband 4.3.2.2 Wi-Fi MAC 4.3.2.3 Networking Features 4.3.3 Bluetooth LE 4.3.3.1 Bluetooth LE PHY 4.3.3.2 Bluetooth LE Link Controller 5 Electrical Characteristics 5.1 Absolute Maximum Ratings 5.2 Recommended Operating Conditions 5.3 VDD_SPI Output Characteristics 5.4 DC Characteristics (3.3 V, 25 °C) 5.5 ADC Characteristics 5.6 Current Consumption 5.6.1 RF Current Consumption in Active Mode 5.6.2 Current Consumption in Other Modes 5.7 Memory Specifications 5.8 Reliability 6 RF Characteristics 6.1 Wi-Fi Radio 6.1.1 Wi-Fi RF Transmitter (TX) Characteristics 6.1.2 Wi-Fi RF Receiver (RX) Characteristics 6.2 Bluetooth 5 (LE) Radio 6.2.1 Bluetooth LE RF Transmitter (TX) Characteristics 6.2.2 Bluetooth LE RF Receiver (RX) Characteristics 7 Packaging ESP32-C3 Consolidated Pin Overview ESP32-C3 Chip Series Group Overview Datasheet Versioning Glossary Related Documentation and Resources Revision History