CH32V203K8U7
WCH · CH32V203 Series
In production
32 bit · RV32IMAC
Low-power data
Max clock
144MHz
SRAM
20KB
On-chip Flash
64KB
Active current
49µA/MHz
Sleep current
—
Supply voltage
2.4–3.6V
Overview
CH32V203K8U7 is a WCH-bit RISC-V MCU from 32, built on the WCH in-house QingKe V4B core (RV32IMAC), with a maximum clock of 144 MHz, 20 KB of on-chip SRAM, and 64 KB KB of Flash. Typical active power is about 49 µA/MHz.
Core and memory
| Vendor | WCH（Chinese mainland） |
|---|---|
| IP brand / origin | WCH in-house（Chinese mainland） |
| Core | QingKe V4B |
| ISA / bit width | RV32IMAC · 32 bit |
| Max clock | 144 MHz |
| SRAM | 20 KB |
| On-chip Flash | 64 KB |
Power and electrical
Active current
49 µA/MHz
Sleep current
—
Standby / shutdown
0.5 µA
Conditions and notes: The vendor or source notes are in Chinese in the original 同 CH32V203C8T6（同系列电气表，VDD=3.3V/25°C，HSI 144MHz）
| Supply voltage | 2.4–3.6 V |
|---|---|
| Operating temperature | -40 ℃ ~ 105 ℃ |
| Wake-up time | 4820 µs |
Peripherals and interfaces
| UART / USART | 2 way |
|---|---|
| SPI | 1 way |
| I²C | 1 way |
| CAN / CAN FD | 1 way |
| USB Full-Speed | 2 way |
| Op-amp | 2 way |
| Comparator | 2 way |
| Touch | 10 way |
| DMA | 8 way |
| ADC | 10 channels · 12 bit |
| Other | The vendor or source notes are in Chinese in the original QFN32：31 GPIO，USART/SPI/I2C 各被封装裁到 2/1/1 |
Sources and notes
Confidence:High (official datasheet) · Last verified 2026-11-04
The vendor or source notes are in Chinese in the original 官方 DS V3.0 的 QFN32 型号只有 CH32V203K8U7（-40~105°C），没有 K8U6；部分第三方列表写的 K8U6 未在官方文档中出现。QFN32 4*4mm，31 GPIO。同封装另有 K8T6=LQFP32。