32-bit general-purpose RISC-V MCU-CH32V003


CH32V003 series is based on QingKe RISC-V2A core design of industrial-grade general-purpose microcontroller, support 48MHz system main frequency, with wide voltage, 1-wire serial debug interface, low-power consumption, ultra-small package, etc. CH32V003 series built-in a group of DMA controller, a group of 10-bit ADC, a group of op-amp comparators, multiple timers and standard communication interfaces USART, I2C, SPI, etc.

System Block Diagram


  • QingKe 32-bit RISC-V2A processor, supporting 2 levels of interrupt nesting
  • Maximum 48MHz system main frequency
  • 2KB SRAM, 16KB Flash
  • Power supply voltage: 3.3/5V
  • Multiple low-power modes: Sleep, Standby
  • Power on/off reset, programmable voltage detector
  • 1 group of 1-channel general-purpose DMA controller
  • 1 group of op-amp comparator
  • 1 group of 10-bit ADC
  • 1×16-bit advanced-control timer, 1×16-bit general-purpose timer
  • 2 WDOG, 1×32-bit SysTick
  • 1 USART interface, 1 group of I2C interface, 1 group of SPI interface
  • 18 I/O ports, mapping an external interrupt
  • 64-bit chip unique ID
  • 1-wire serial debug interface (SDI)
  • Package: TSSOP20, QFN20, SOP16, SOP8

Product Selection Guide

Technical Resources

  1. Datasheet: CH32V003DS0.PDF, CH32V003RM.PDF
  2. CH32V003EVT evaluation board manual and reference routines: CH32V003EVT.ZIP
  3. Integrated development environment (IDE): MounRiver Studio(MRS)

relation files

file name file content
CH32V002DS0.PDF 16K Flash value general-purpose MCU CH32V002 datasheet. The chip is based on QingKe RISC-V core, industrial-grade design, featuring wide voltage, low-power consumption, 1-wire SDI, etc. The pins and functions are compatible with CH32V003, providing peripheral resources such as 12-bit ADC, DMA, TIM, USART, I2C, SPI, and so on.
CH32V006DS0.PDF 64K Flash multi-function general-urpose MCU CH32V006 and 32K Flash enhanced general-purpose MCU CH32V005 datasheet. The chips are based on QingKe RISC-V core, industrial-grade design with wide voltage, low-power consumption, 1- and 2-wire SDI, etc. The chips have built-in OPA and provide peripheral resources such as ADC, TouchKey, DMA, TIM, USART, I2C, SPI, and so on.