CH585M
WCH · CH585 Series
In production
32 bit · RV32IMBC
Low-power data
Max clock
78MHz
SRAM
128KB
On-chip Flash
448KB
Active current
—
Sleep current
2.6µA
Supply voltage
1.85–3.6V
Overview
CH585M is a WCH-bit RISC-V MCU from 32, built on the WCH in-house QingKe V3C core (RV32IMBC), with a maximum clock of 78 MHz, 128 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 V3C |
| ISA / bit width | RV32IMBC · 32 bit |
| Max clock | 78 MHz |
| SRAM | 128 KB |
| On-chip Flash | 448 KB |
Power and electrical
Active current
—
Sleep current
2.6 µA
Standby / shutdown
0.65 µA
Conditions and notes: The vendor or source notes are in Chinese in the original DS（CH585/CH584）: DC-DC; Idle 1.44mA（PLL/HSE 不停）; Halt 1.01mA（PLL/HSE 不停）/200µA（PLL/HSE 停）; Sleep 2.6~8.2µA; Shutdown 0.65~5.5µA; BLE 接收电流 5.8mA（关 DC-DC）/3.0mA（开 DC-DC），3.3V
| Supply voltage | 1.85–3.6 V |
|---|---|
| Operating temperature | -40 ℃ ~ 85 ℃ |
Peripherals and interfaces
| UART / USART | 4 way |
|---|---|
| SPI | 2 way |
| I²C | 1 way |
| USB Full-Speed | 1 way |
| USB High-Speed | 1 way |
| BLE | 1 way |
| LCD controller | 1 way |
| Touch | 14 way |
| ADC | 14 channels · 12 bit |
| Other | The vendor or source notes are in Chinese in the original BLE 5.4（2Mbps/1Mbps），RX -95dBm，TX +4.5dBm；USB2.0 FS + USB2.0 HS 480Mbps（1024B 包）；NFC ISO14443-A 读写；段式 LCD 28*4；LED 点阵 1/2/4/8 通道；14+3 通道 ADC |
Sources and notes
Confidence:High (official datasheet) · Last verified 2026-11-04
The vendor or source notes are in Chinese in the original CH584 = CH585 去掉 USBHS 与 SPI1、RAM 96KB。CH585F=QFN32/24 GPIO/7+1 ADC/14*4 LCD；CH585C=QFN26C3；CH585D=QFN20。2024-08-19 官方发布。