The CH32V003 series is an industrial-grade general-purpose microcontroller designed based on the RISC-V2A core. It supports a 48MHz system frequency and has features such as wide voltage range, single-line debugging, low power consumption, and ultra-small package. The CH32V003 series features a built-in DMA controller, a 10-bit analog-to-digital converter (ADC), an op amp comparator, multiple timers, and standard communication interfaces such as USART, IIC, and SPI.

Features:

32-bit RISC-V2A processor with two-level interrupt nesting support

Up to 48MHz system frequency

2KB SRAM, 16KB Flash

Supply voltage: 3.3V/5V

Multiple low-power modes: sleep and standby

Power-up/power-down reset, programmable voltage detectors

One general-purpose DMA controller

One op amp comparator

One 10-bit ADC

One 16-bit advanced timer and one 16-bit general-purpose timer

Two watchdog timers and one 32-bit system timer

One USART, one IIC, and one SPI interface

18 I/O ports, including one external interrupt

64-bit unique chip ID

Serial single-wire debug interface