Taking GD32VF103 series as an example, 103 chip is a 32-bit general purpose microcontroller based on RISC-V core, with balanced processing performance and system resources, suitable for industrial control, consumer electronics, emerging IoT and other embedded market applications.
Main frequency: 108MHz
Memory: Built-in 16KB to 128KB Flash and 6KB to 32KB SRAM
Operating voltage: 2.6~3.6V
Peripheral resources: Timer (advanced 16-bit timer, universal 16-bit timer), U(S)ART, I2C, SPI\/I2S, CAN, USBFS, ADC (16 external channels), DAC, EXMC, GPIO
103 represents the enhanced series, its core: ARM32 bit Cortex-M3 CPU, maximum operating frequency 72MHz, 1.25DMIPS\/MHz. Single cycle multiplication and hardware division. The memory is 32-512KB Flash memory integrated on chip. 6-64KB SRAM memory.