CH32V103R8T6
WCH · CH32V103 Series
In production
32 bit · RV32IMAC
Low-power data
Max clock
80MHz
SRAM
20KB
On-chip Flash
64KB
Active current
123µA/MHz
Sleep current
—
Supply voltage
2.7–5.5V
Overview
CH32V103R8T6 is a WCH-bit RISC-V MCU from 32, built on the WCH in-house QingKe V3A core (RV32IMAC), with a maximum clock of 80 MHz, 20 KB of on-chip SRAM, and 64 KB KB of Flash. Typical active power is about 123 µA/MHz.
Core and memory
| Vendor | WCH（Chinese mainland） |
|---|---|
| IP brand / origin | WCH in-house（Chinese mainland） |
| Core | QingKe V3A |
| ISA / bit width | RV32IMAC · 32 bit |
| Max clock | 80 MHz |
| SRAM | 20 KB |
| On-chip Flash | 64 KB |
Power and electrical
Active current
123 µA/MHz
Sleep current
—
Standby / shutdown
1.6 µA
Conditions and notes: The vendor or source notes are in Chinese in the original 同 CH32V103C8T6（同系列同一电气特性表，VDD=3.3V/25°C，外部时钟 72MHz 外设全关 8.88mA）
| Supply voltage | 2.7–5.5 V |
|---|---|
| Operating temperature | -40 ℃ ~ 85 ℃ |
| Wake-up time | 5.8 µs |
Peripherals and interfaces
| UART / USART | 3 way |
|---|---|
| SPI | 2 way |
| I²C | 2 way |
| USB Full-Speed | 1 way |
| ISO 7816 | 1 way |
| Touch | 16 way |
| DMA | 7 way |
| ADC | 16 channels · 12 bit |
| Other | The vendor or source notes are in Chinese in the original 64 pin / 51 GPIO 版本 |
Sources and notes
Confidence:High (official datasheet) · Last verified 2026-11-04
The vendor or source notes are in Chinese in the original LQFP64M 10*10mm, 51 GPIO。