Datasheet

Contents
Contents
Product Overview 2
Solution Highlights 2
Features 3
Applications 4
1 ESP32C3 Series Comparison 9
1.1 ESP32-C3 Series Nomenclature 9
1.2 Comparison 9
2 Pin Definition 10
2.1 Pin Layout 10
2.2 Pin Description 11
2.3 Power Scheme 13
2.4 Strapping Pins 14
3 Functional Description 17
3.1 CPU and Memory 17
3.1.1 CPU 17
3.1.2 Internal Memory 17
3.1.3 External Flash 17
3.1.4 Address Mapping Structure 18
3.1.5 Cache 18
3.2 System Clocks 19
3.2.1 CPU Clock 19
3.2.2 RTC Clock 19
3.3 Analog Peripherals 19
3.3.1 Analog-to-Digital Converter (ADC) 19
3.3.2 Temperature Sensor 19
3.4 Digital Peripherals 20
3.4.1 General Purpose Input / Output Interface (GPIO) 20
3.4.2 Serial Peripheral Interface (SPI) 21
3.4.3 Universal Asynchronous Receiver Transmitter (UART) 22
3.4.4 I2C Interface 22
3.4.5 I2S Interface 23
3.4.6 Remote Control Peripheral 23
3.4.7 LED PWM Controller 23
3.4.8 General DMA Controller 23
3.4.9 USB Serial/JTAG Controller 23
3.4.10 TWAI
®
Controller 24
3.5 Radio and Wi-Fi 24
3.5.1 2.4 GHz Receiver 24
3.5.2 2.4 GHz Transmitter 24
3.5.3 Clock Generator 25
Espressif Systems 5
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ESP32-C3 Series Datasheet v1.2