Overview

The CH32F208 is a wireless MCU based on the Cortex-M3 core. The system clock frequency can be up to 144MHz. The CH32F208 integrates 2Mbps Bluetooth Low Energy communication module, 10M Ethernet module (MAC+PHY), USB2.0 full-speed device interface and host/device interface, CAN controller, etc.

System Block Diagram

Features

• Cortex-M3 core, up to 144MHz system clock frequency.
• Single-cycle multiplication and hardware division.
• 64KB SRAM, 128KB Flash.
• Supply voltage: 2.5/3.3V. GPIO unit is supplied independently.
• Low-power modes: sleep, stop, standby.
• Bluetooth Low Energy 5.3.
• 10M Ethernet controller (MAC+PHY).
• Power-on/power-down reset, programmable voltage detector.
• 2 op amp comparators.
• 16-channel 12-bit ADC converter, 16-channel TouchKey.
• 5 timers.
• USB2.0 full-speed host/device + device interface.
• 4 USARTs.
• One CAN interface (2.0B active).
• 2 IIC interfaces, 2 SPI interfaces.
• 53 I/O ports, can be mapped to 16 external interrupts.
• CRC calculation unit, 96-bit unique ID.
• Serial 2-wire debug interface.
• Packages: LQFP64M, QFN68.

Product Selection Guide

Technical Resources

1. Datasheet: CH32F20xDS0.PDF，CH32FV2x_V3xRM.PDF
2. CH32F203EVT evaluation board manual and reference routines: CH32F20xEVT.ZIP