ESP32-C3-WROOM-02-H4 2.4GHz WiFi+Bluetooth BLE5.0 wireless module

Description

ESP32-C3-WROOM-02 is the general-purpose Wi-Fi and Bluetooth-compatible LE module. The rich set of peripherals and high performance make this module an ideal choice for smart homes, industrial automation, health care, consumer electronics, etc. ESP32-C3-WROOM-02 features a 4 MB external SPI flash and comes with an on-board PCB antenna. ESP32-C3 has a 32-bit RISC-V single-core processor. It integrates a rich set of peripherals, ranging from UART, I2C, I2S, remote control peripheral, LED PWM controller, general DMA controller, TWAI® controller, USB Serial/JTAG controller, temperature sensor, ADC, etc. It also includes SPI, Dual SPI and Quad SPI interfaces.

Block Diagram

Pin Layout (Top View)
pin layout of ESP32-C3 module

Pin Description

Name	Pin Number	Type	Function
3V3	1	P	Power supply
EN	2	I	High: on, enables the chip. Low: off, the chip powers off. Note: Do not leave the EN pin floating
IO4	3	I/O/T	GPIO4, ADC1_CH4, FSPIHD, MTMS
IO5	4	I/O/T	GPIO5, ADC2_CH0, FSPIWP, MTDI
IO6	5	I/O/T	GPIO6, FSPICLK, MTCK
IO7	6	I/O/T	GPIO7, FSPID, MTDO
IO8	7	I/O/T	GPIO8
IO9	8	I/O/T	GPIO9
GND	9	P	Ground
IO10	10	I/O/T	GPIO10, FSPICS0
RXD	11	I/O/T	GPIO20, U0RXD
TXD	12	I/O/T	GPIO21, U0TXD
IO18	13	I/O/T	GPIO18, USB_D
IO19	14	I/O/T	GPIO19, USB_D+
IO3	15	I/O/T	GPIO3, ADC1_CH3
IO2	16	I/O/T	GPIO2, ADC1_CH2, FSPIQ
IO1	17	I/O/T	GPIO1, ADC1_CH1, XTAL_32K_N
IO0	18	I/O/T	GPIO0, ADC1_CH0, XTAL_32K_P

Note： P: power supply; I: input; O: output; T: high impedance.

Feature

Equipped with RISC-V 32-bit single-core processor, the operating frequency is up to 160 MHz with 400 KBSRAM, 384 KB ROM, 8KB RTC SRAM n
On-board PCB antenna
Support IEEE 802.11 b/g/n-compliant, Bluetooth-compatible BLE 5
Rich peripheral interfaces, including GPIO, UART, SPI, I2S, I2C, ADC, LED PWM controller, temperature sensor, remote control peripheral, general DMA controller, TWAI® controller, USB Serial/JTAG controller, temperature sensor, SAR ADC, general-purpose timers, watchdog timers