32-bit RISC-V2A processor with 2-level interrupt nesting supportUp to 48MHz system main frequency2KB SRAM, 16KB FlashPower supply voltage: 3.3/5VMultiple low-power modes: Sleep, StandbyPower up/down reset, programmable voltage detector1 group of 1-channel general-purpose DMA controller1 group of 1 group 10-bit ADC1 16-bit advanced-control timer and 1 16-bit general-purpose timer2 watchdog and 1 32-bit SysTick timer1 USART interface, 1 group of IC interface, 1 group of SPI interface18 I/O ports, mapping an external interrupt64-bit chip unique ID1-wire serial debug interface(SDI)Colour:As ShownMaterial:PC+MetalPackage Contents:1 x ch32v003 board1 x wchlinke(Due to different product batches, the appearance may be different, which does not affect use.)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.