CH32V208WBU6
WCH · CH32V208 Series
In production
32 bit · RV32IMAC
Low-power data
Max clock
144MHz
SRAM
64KB
On-chip Flash
128KB
Active current
74µA/MHz
Sleep current
—
Supply voltage
2.4–3.6V
Overview
CH32V208WBU6 is a WCH-bit RISC-V MCU from 32, built on the WCH in-house QingKe V4C core (RV32IMAC), with a maximum clock of 144 MHz, 64 KB of on-chip SRAM, and 128 KB KB of Flash. Typical active power is about 74 µA/MHz.
Core and memory
| Vendor | WCH（Chinese mainland） |
|---|---|
| IP brand / origin | WCH in-house（Chinese mainland） |
| Core | QingKe V4C |
| ISA / bit width | RV32IMAC · 32 bit |
| Max clock | 144 MHz |
| SRAM | 64 KB |
| On-chip Flash | 128 KB |
Power and electrical
Active current
74 µA/MHz
Sleep current
—
Standby / shutdown
1 µA
Conditions and notes: The vendor or source notes are in Chinese in the original DS V2.7 表4-6-1/4-8: VDD=3.3V, 25°C, HSI 144MHz 外设全关 10.65mA → 74µA/MHz（全开 15.61mA）; Stop 32.7µA（稳压器低功耗）; Standby 1.0µA（LSI/LSE/RTC/IWDG 关、RAM 全断电）
| Supply voltage | 2.4–3.6 V |
|---|---|
| Operating temperature | -40 ℃ ~ 85 ℃ |
Peripherals and interfaces
| UART / USART | 4 way |
|---|---|
| SPI | 2 way |
| I²C | 2 way |
| CAN / CAN FD | 1 way |
| USB Full-Speed | 2 way |
| Ethernet | 1 way |
| BLE | 1 way |
| Op-amp | 2 way |
| Comparator | 2 way |
| Touch | 16 way |
| DMA | 8 way |
| ADC | 16 channels · 12 bit |
| Other | The vendor or source notes are in Chinese in the original BLE 5.3 2Mbps 内置 2.4G 收发器; 10M Ethernet MAC+PHY; USBD + USBFS 主机/设备; 1x16-bit 高级 + 3x16-bit 通用 + 1x32-bit 通用定时器 |
Sources and notes
Confidence:High (official datasheet) · Last verified 2026-11-04
The vendor or source notes are in Chinese in the original WBU6=QFN68/53 GPIO/16 路 ADC；同系列 GBU6=QFN28/21 GPIO/8 路 ADC、CBU6=QFN48、RBT6=LQFP64M。官方新闻 2022-04-08 发布（当时称 BLE+以太网 RISC-V 通用 MCU）。