CH583M
WCH · CH583 Series
In production
32 bit · RV32IMAC
Low-power data
Max clock
20MHz
SRAM
32KB
On-chip Flash
448KB
Active current
—
Sleep current
0.7µA
Supply voltage
1.75–3.6V
Overview
CH583M is a WCH-bit RISC-V MCU from 32, built on the WCH in-house QingKe V4A core (RV32IMAC), with a maximum clock of 20 MHz, 32 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 V4A |
| ISA / bit width | RV32IMAC · 32 bit |
| Max clock | 20 MHz |
| SRAM | 32 KB |
| On-chip Flash | 448 KB |
Power and electrical
Active current
—
Sleep current
0.7 µA
Standby / shutdown
0.2 µA
Conditions and notes: The vendor or source notes are in Chinese in the original 同 CH582M（DS 共用）: DC-DC; Idle 1.6mA; Halt 320µA; Sleep 0.7~2.8µA; Shutdown 0.2~2.3µA
| Supply voltage | 1.75–3.6 V |
|---|---|
| Operating temperature | -40 ℃ ~ 85 ℃ |
Peripherals and interfaces
| UART / USART | 4 way |
|---|---|
| SPI | 2 way |
| I²C | 1 way |
| USB Full-Speed | 2 way |
| BLE | 1 way |
| Touch | 14 way |
| ADC | 14 channels · 12 bit |
| Other | The vendor or source notes are in Chinese in the original 比 CH582 增加 SPI1 主机并支持最低 1.75V 供电；BLE 5.0，RX -98dBm，TX +6dBm；2 组 USB2.0 FS |
Sources and notes
Confidence:Medium (official product page) · Last verified 2026-11-04
The vendor or source notes are in Chinese in the original release_year 取 CH582 系列 2021 年之后的 CH583 上市年，官方新闻库中未见 CH583 单独条目，故按 2022 记（中等把握）。DS 中另出现一次 'CH581F' 型号，但无产品页/无独立手册，未收录。