Description

The CH32V103 is a general purpose microcontroller based on the 32-bit RISC processor RISC-V3A. The CH32V103 provides clock security system, multi-level power management and general DMA controller. The CH32V103 is also equipped with abundant peripheral resources, such as single USB2.0 host/device interface, multi-channel 12-bit ADC module, multi-channel TouchKey, multiple timers, and multi-channel IIC/USART/SPI interfaces, etc.

Features

• RISC-V3A processor, max 80MHz system clock frequency;
• Single-cycle multiplication and hardware division;
• 20KB SRAM，64KB CodeFlash;
• 2.7V to 5.5V supply voltage, supplies to GPIO simultaneously;
• Multiple low-power modes: sleep/stop/standby;
• Power-on/power-down reset (POR/PDR);
• Programmable voltage detector (PVD);
• 7-channel DMA controller;
• 16-channel TouchKey detection;
• 16-channel 12-bit ADC;
• 7 timers;
• One USB2.0 host/device interface (full-speed and low-speed);
• Two I2C interfaces (support SMBus/PMBus);
• 3 USARTs;
• 2 SPIs (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 chip ID;
• Serial 2—wire debug interface (SDI);
• Packages: LQFP64M, LQFP48, QFN48. debug interface;
• Packages: LQFP64M, LQFP100.

Development Environment

IDE for this chip can be downloaded from Mounriver’s website.

Note: This board doesn’t have an onboard debugger so WCH-Link or WCH-LinkE is required.

Datasheets / Reference Manual

CH32V103 Datasheet Download Link

CH32V103 Reference Manual Download Link

QingKeV3 Processor Manual

CH32V103C-EVT-R1 Board Schematic

CH32V103C-EVT-R1 Board User Manual

Example Code Zip