CH573F
WCH · CH573 Series
In production
32 bit · RV32IMAC
Low-power data
Max clock
20MHz
SRAM
18KB
On-chip Flash
448KB
Active current
—
Sleep current
1.4µA
Supply voltage
2.3–3.6V
Overview
CH573F is a WCH-bit RISC-V MCU from 32, built on the WCH in-house QingKe V3A core (RV32IMAC), with a maximum clock of 20 MHz, 18 KB of on-chip SRAM, and 448 KB KB of Flash.
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 | 20 MHz |
| SRAM | 18 KB |
| On-chip Flash | 448 KB |
Power and electrical
Active current
—
Sleep current
1.4 µA
Standby / shutdown
0.3 µA
Conditions and notes: The vendor or source notes are in Chinese in the original DS V1.12: 内置 DC-DC，0dBm 发射 6mA；Idle 1.5mA；Halt 320µA；Sleep 1.4~6µA；Shutdown 0.3~1.3µA
| Supply voltage | 2.3–3.6 V |
|---|---|
| Operating temperature | -40 ℃ ~ 85 ℃ |
Peripherals and interfaces
| UART / USART | 4 way |
|---|---|
| SPI | 1 way |
| I²C | 1 way |
| USB Full-Speed | 2 way |
| BLE | 1 way |
| Touch | 8 way |
| ADC | 8 channels · 12 bit |
| Other | The vendor or source notes are in Chinese in the original BLE 4.2，RX -96dBm，TX +5dBm；448K CodeFlash + 24K BootLoader + 32K DataFlash；SRAM 16K 双电源保持 + 2K；USB2.0 FS 主机+设备；4x26-bit 定时器/4 路 PWM + 8 路 8-bit PWM |
Sources and notes
Confidence:High (official datasheet) · Last verified 2026-11-04
The vendor or source notes are in Chinese in the original 同系列 CH573X=QFN32/22 GPIO/最低 1.7V、CH573Q=LQFP32（RF 性能略低于 QFN 封装）。