ESP32-C3FH4
Espressif · ESP32-C3 Series
In production
32 bit · RV32IMC
Low-power data
Max clock
160MHz
SRAM
400KB
On-chip Flash
4096KB
Active current
143.75µA/MHz
Sleep current
5µA
Supply voltage
3–3.6V
Overview
ESP32-C3FH4 is a Espressif-bit RISC-V MCU from 32, built on the Espressif in-house Espressif ESP-RISC-V (single core) core (RV32IMC), with a maximum clock of 160 MHz, 400 KB of on-chip SRAM, and 4096 KB KB of Flash. Typical active power is about 143.75 µA/MHz.
Core and memory
| Vendor | Espressif（Chinese mainland） |
|---|---|
| IP brand / origin | Espressif in-house（Chinese mainland） |
| Core | Espressif ESP-RISC-V (single core) |
| ISA / bit width | RV32IMC · 32 bit |
| Max clock | 160 MHz |
| SRAM | 400 KB |
| On-chip Flash | 4096 KB |
| OTP | 0.5 KB |
| Cache | 16 KB |
Power and electrical
Active current
143.75 µA/MHz
Sleep current
5 µA
Standby / shutdown
1 µA
Conditions and notes: The vendor or source notes are in Chinese in the original Wi-Fi SoC。Modem-sleep、CPU 运行、外设时钟关 23mA@160MHz→143.75µA/MHz；deep-sleep 5µA；light-sleep 130µA；power-off 1µA。Wi-Fi TX 335mA@21dBm(11b)、RX 84mA。
| Supply voltage | 3–3.6 V |
|---|---|
| Operating temperature | -40 ℃ ~ 105 ℃ |
Peripherals and interfaces
| UART / USART | 2 way |
|---|---|
| SPI | 3 way |
| I²C | 1 way |
| CAN / CAN FD | 1 way |
| USB Full-Speed | 1 way |
| BLE | 1 way |
| Wi-Fi | 1 way |
| I²S | 1 way |
| DMA | 6 way |
| ADC | 6 channels · 12 bit |
| PWM | 6 channels |
| Other | The vendor or source notes are in Chinese in the original USB Serial/JTAG，TWAI(CAN 2.0)，RMT 2TX+2RX，2x 54-bit 定时器 |
Sources and notes
Confidence:High (official datasheet) · Last verified 2026-11-04
The vendor or source notes are in Chinese in the original 2.4GHz Wi-Fi 4 + BLE 5.0；QFN32 5x5mm；22 GPIO；400KB SRAM 含 16KB cache，384KB ROM。