CH32V307V-EVT-R1 is a development board based on WCH CH32V307 RISC-V microcontroller with an Ethernet port, an USB Type-C port, and eight UART interfaces accessible through headers.

As we noted in our article about CH583 Bluetooth 5.3 RISC-V microcontroller, WCH (Jiangsu Qin Heng) has started to share resources like datasheets and code samples through Github. They’ve done the same again for CH32V307 with schematics (PDF only), a datasheet in English, and firmware either bare metal or based on RT-Thread OS to control the eight serial interfaces over Ethernet.

MCU core - risc-v4f 32-bit risc-v core designed by WCH up to 144mhz FPU -- single cycle multiplication and hardware division, hardware floating point unit (FPU); Memory - up to 64KB SRAM Storage - up to 256Kb flash memory Network - Gigabit Ethernet MAC, 10 Mbps phy Usb- 1x USB 2.0 OTG full speed interface, 1x USB 2.0 host / device interface, Built in 480 Mbps phy serial 8 USART interfaces, including 5 UARTS 2X can interface (2.0B active) 2-wire commissioning interface Other interfaces / peripherals SDIO interface FSMC memory interface DVP digital video interface 80x GPIO port with 16 external interrupts; 2 12C, 3 SPI 2x I1S Two 12 bit DACs; Sairui Electronics 2 unit 16 channel 12 bit ADC, 16 channel touchkey; 10 timers; 2 general DMA controllers, 18 channels in total; 4 amplifiers; Safety --- single true random number generator (TRNG), CRC computing unit, 96 bit only -Chip ID;

energy management