CH32V203C8T6
WCH · CH32V203 Series
Overview
CH32V203C8T6 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
Conditions and notes: The vendor or source notes are in Chinese in the original DS V3.0 表4-6-1/4-8-1: VDD=3.3V, 25°C, HSI 144MHz 外设全关 7.1mA → 49µA/MHz（全开 11.4mA）; 官方特性页标称 ≈52µA/MHz; Stop 10.5µA（稳压器低功耗、RAM 低功耗）; Standby 0.5µA（LSI/LSE/RTC/IWDG 全关、RAM 全部断电）; Standby 唤醒 4.82ms
| Supply voltage | 2.4–3.6 V |
|---|---|
| Operating temperature | -40 ℃ ~ 85 ℃ |
| Wake-up time | 4820 µs |
Peripherals and interfaces
| UART / USART | 4 way |
|---|---|
| SPI | 2 way |
| I²C | 2 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 2 组 12-bit ADC（C8T6 每单元 10 通道，共 10@2）; 1x16-bit 高级 + 3x16-bit 通用定时器; USBD + USBFS 主机/设备双 USB |
Sources and notes
Confidence:High (official datasheet) · Last verified 2026-11-04
The vendor or source notes are in Chinese in the original 电压数字冲突：特性页写 VDD 2.4~6V，框图与电气章节写 2.4~3.6V，本条目取 2.4~3.6V。同系列 K8U7/RCT7 支持 -40~105°C；RBT6 为 128K Flash+64K SRAM 且带 10M ETH PHY。