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CH32V003F4P6 – Ultra-Low-Cost 32-bit RISC-V Microcontroller (16KB Flash, 48MHz)

$0.90

A high-quality 32-bit microcontroller from WCH (Nanjing Qinheng Microelectronics), featuring the advanced QingKe V2A RISC-V core . With an extremely economical price , , it is the ideal choice for low-cost electronic projects. It serves as an excellent pin-to-pin replacement for the STM8S003 while offering higher performance with its 32-bit RISC-V architecture.

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Description
Product Details

Key Features

48MHz RISC-V Processor: QingKe V2A 32-bit core with excellent performance and low power consumption .
Adequate Memory: 16KB Flash and 2KB SRAM .
Easy Programming: Supports SWD interface (via PD1 pin) for programming and debugging .
Flexible I/O: 18 multi-purpose I/O pins .
Voltage Flexibility: Operates on a wide voltage range from 3.3V to 5V .
Multiple Development Environments: Can be programmed via MounRiver, PlatformIO, Arduino IDE, and Zephyr RTOS .
Powerful Economical Alternative: Provides standard 32-bit performance at 8-bit MCU prices .
Temperature Resistant: Operates in temperatures ranging from -40°C to +85°C .

Key Technical Specifications

Specification	Value
Core Architecture	RISC-V (QingKe V2A) 32-bit
Frequency	48 MHz
Flash Memory	16 KB
SRAM	2 KB
GPIO Pins	18
Communication Interfaces	USART, I2C, SPI
ADC	10-bit
Timers	16-bit Advance Timer, General Timer
Operating Voltage	3.3V – 5V
Temperature Range	-40°C to +85°C
Package	TSSOP-20

Supported Development Environments

Environment	Description
MounRiver Studio	Official IDE from WCH (recommended for beginners)
Arduino IDE	Via OpenWCH core addition
PlatformIO	Official support via ch32v platform
Zephyr RTOS	Official real-time operating system support

Important Notes

Programming: Requires a WCH-LinkE programmer or compatible SWD programmer .
PD1 Pin: This pin is used for SWD programming and debugging. It is recommended to avoid using it in your projects if you need to reprogram the device later .
Limited Memory: The memory (16KB Flash and 2KB RAM) makes it suitable for lightweight applications .