Technical data sheet for WCH CH32V20x and CH32V30x industrial‑grade RISC‑V microcontrollers.
The CH32V20x/CH32V30x series are 32‑bit RISC‑V microcontrollers designed for industrial applications. They offer a range of flash and SRAM capacities, extensive peripheral sets, and low‑power modes.
The document provides detailed specifications, memory maps, clock tree diagrams, package options, and ordering information for models such as CH32V203, CH32V303, CH32V305, CH32V307 and CH32V208. This manual is written in Chinese.
| CPU maximum frequency | 144 MHz |
|---|---|
| Flash memory size | up to 256 KB |
| SRAM size | up to 64 KB |
| Operating voltage | 3.3 V |
| Industrial temperature range | -40 °C to 85 °C |
| Integrated Bluetooth | BLE 5.3 |
| Ethernet controller | 1 Gb MAC with 10 M PHY |
The CPU can run up to 144 MHz.
It operates at a nominal 3.3 V supply.
They are rated for -40 °C to 85 °C (industrial grade).
The CH32V208 includes a BLE 5.3 Bluetooth module.