ESP8684H4X
Espressif · ESP32-C2 (ESP8684) Series
Overview
ESP8684H4X 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 120 MHz, 272 KB of on-chip SRAM, and 4096 KB KB of Flash. Typical active power is about 122.5 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 | 120 MHz |
| SRAM | 272 KB |
| On-chip Flash | 4096 KB |
| OTP | 0.125 KB |
| Cache | 16 KB |
Power and electrical
Conditions and notes: The vendor or source notes are in Chinese in the original Wi-Fi SoC。Modem-sleep 且 CPU 全速运行（外设时钟关）14.7mA@120MHz→122.5µA/MHz；deep-sleep 5µA；light-sleep 140µA；power-off 1µA。Wi-Fi TX 370mA@22dBm(11b)/RX 65mA；BLE TX 150mA@0dBm、RX 62mA。
| Supply voltage | 3–3.6 V |
|---|---|
| Operating temperature | -40 ℃ ~ 105 ℃ |
Peripherals and interfaces
| UART / USART | 2 way |
|---|---|
| SPI | 3 way |
| I²C | 1 way |
| BLE | 1 way |
| Wi-Fi | 1 way |
| DMA | 2 way |
| ADC | 5 channels · 12 bit |
| PWM | 6 channels |
| Other | The vendor or source notes are in Chinese in the original LEDC 6 通道，GDMA 1TX+1RX，温度传感器；无 I2S/USB/CAN |
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 (802.11b/g/n, 1T1R) + BLE 5.3；数据手册标 BLE 5.3，产品页标 Bluetooth 5 (LE)，存在表述差异。QFN24 4x4mm；14 GPIO（H2X/H4X 均 14 GPIO）。4MB SiP Flash。