Overview
The CH32F1 is a general-purpose MCU based on 32-bit Cortex-M3 core. The CH32F1 integrates clock security system, multi-level power management, general DMA controller, etc. The CH32F1 provides abundant peripherals, such as 2-channel USB2.0 interface, multi-channel TouchKey, 12-bit DAC converter module, multi-channel 12-bit ADC, timers, CAN communication controller and I2C/USART/SPI, etc.
System Block Diagram
Features
- Cortex-M3 core, 72MHz system clock frequency.
- Single-cycle multiplication and hardware division.
- 20KB SRAM，64KB CodeFlash.
- Supply voltage: 2.7V-5.5V. GPIO synchronous supply voltage.
- Low-power modes: sleep/stop/standby.
- Power-on/power-down reset (POR/PDR).
- Programmable voltage detector (PVD).
- 7-channel DMA controller.
- 12-bit ADC, with conversion time of 1us.
- 16-channel TouchKey detection.
- 12-bit DAC.
- 7 timers.
- One USB2.0 FullSpeed host/device interface (full-speed and low-speed).
- One USB2.0 FullSpeed device interface (full-speed and low-speed).
- One CAN controller (2.0B active).
- Two I2C interfaces (support SMBus/PMBus).
- 3 USARTs.
- 2 SPIs (support Master mode and Slave mode).
- 51 I/O ports, all I/O ports can be mapped to 16 external interrupts.
- CRC calculation unit, 96-bit unique ID.
- Serial debug interface (SWD).
- Packages: LQFP64M, LQFP48, QFN48.
Product Selection Guide
Technical Resources
- Datasheet: CH32F103DS0.PDF，CH32xRM.PDF
- CH32F103EVT evaluation board manual and reference routines: CH32F103EVT.ZIP