CH32V003A4M6
WCH · CH32V003 Series
In production
32 bit · RV32EC
Low-power data
Max clock
48MHz
SRAM
2KB
On-chip Flash
16KB
Active current
83µA/MHz
Sleep current
1700µA
Supply voltage
2.7–5.5V
Overview
CH32V003A4M6 is a WCH-bit RISC-V MCU from 32, built on the WCH in-house QingKe V2A core (RV32EC), with a maximum clock of 48 MHz, 2 KB of on-chip SRAM, and 16 KB KB of Flash. Typical active power is about 83 µA/MHz.
Core and memory
| Vendor | WCH（Chinese mainland） |
|---|---|
| IP brand / origin | WCH in-house（Chinese mainland） |
| Core | QingKe V2A |
| ISA / bit width | RV32EC · 32 bit |
| Max clock | 48 MHz |
| SRAM | 2 KB |
| On-chip Flash | 16 KB |
Power and electrical
Active current
83 µA/MHz
Sleep current
1700 µA
Standby / shutdown
7.6 µA
Conditions and notes: The vendor or source notes are in Chinese in the original 同 CH32V003F4P6（DS 表3-6-1，VDD=3.3V/25°C，HSI 48MHz 外设全关 4.0mA）; 封装小、可用 IO 少，实测电流略低但 DS 未单列
| Supply voltage | 2.7–5.5 V |
|---|---|
| Operating temperature | -40 ℃ ~ 85 ℃ |
| Wake-up time | 30 µs |
Peripherals and interfaces
| UART / USART | 1 way |
|---|---|
| SPI | 1 way |
| I²C | 1 way |
| Op-amp | 1 way |
| DMA | 7 way |
| ADC | 6 channels · 10 bit |
| Other | The vendor or source notes are in Chinese in the original SOP16 封装只有 14 个 IO、6 路 ADC 输入 |
Sources and notes
Confidence:High (official datasheet) · Last verified 2026-11-04
The vendor or source notes are in Chinese in the original 选型表：16 pin / 14 GPIO / 6 路 ADC。