Features: The TWen32F003 development board is powered by RISC V processor 32-bit RISCV2A processor with 2-level interruptnesting;ARM 32-bit MCU provide a full set of code Up/down resetprogrammable voltagedetector One 16-bit advanced and one 16-bit general-purpose Continuously upgraded zerobased practical development textbooks For developers, students, and DIY enthusiasts who want to explore the embedded system and programming. Specifications: Board :TWen32F003 Frequency:up to 48Mhz system 2KBsram 16kb Power Supply : 3.3/5V 1 set of 10-bit 1 USART 1 set IIC 1 set SPI 18 I/O ports 1 extenal 64-bit ChipID Color: black Material: plastic Package Contents: 1 x Development Board 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.