ESP32-C61HF4
Espressif · ESP32-C61 Series
In production
32 bit · RV32IMAC
Low-power data
Max clock
160MHz
SRAM
320KB
On-chip Flash
4096KB
Active current
100µA/MHz
Sleep current
10µA
Supply voltage
3–3.6V
Overview
ESP32-C61HF4 is a Espressif-bit RISC-V MCU from 32, built on the Espressif in-house Espressif ESP-RISC-V (single core) core (RV32IMAC), with a maximum clock of 160 MHz, 320 KB of on-chip SRAM, and 4096 KB KB of Flash. Typical active power is about 100 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 | RV32IMAC · 32 bit |
| Max clock | 160 MHz |
| SRAM | 320 KB |
| On-chip Flash | 4096 KB |
| OTP | 0.5 KB |
| Cache | 32 KB |
Power and electrical
Active current
100 µA/MHz
Sleep current
10 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 while loop、外设时钟关 16mA@160MHz→100µA/MHz；deep-sleep 10µA；light-sleep 200µA/50µA；power-off 1µA。Wi-Fi TX 360mA@21dBm(11b)。
| Supply voltage | 3–3.6 V |
|---|---|
| Operating temperature | -40 ℃ ~ 105 ℃ |
Peripherals and interfaces
| UART / USART | 3 way |
|---|---|
| SPI | 3 way |
| I²C | 1 way |
| USB Full-Speed | 1 way |
| BLE | 1 way |
| Wi-Fi | 1 way |
| I²S | 1 way |
| SDIO | 1 way |
| DMA | 4 way |
| ADC | 4 channels · 12 bit |
| PWM | 6 channels |
| Other | The vendor or source notes are in Chinese in the original SDIO 2.0 slave，ETM，JTAG；无 CAN/802.15.4 |
Sources and notes
Confidence:High (official datasheet) · Last verified 2026-11-04
The vendor or source notes are in Chinese in the original Wi-Fi 6 (802.11ax 20MHz) + BLE 6.0，无 802.15.4；QFN40 5x5mm；30 GPIO；256KB ROM；320KB SRAM 含 32KB L1 cache；4MB SiP Flash。