barley V4F processor, the highest system frequency is 144MHzSupport single cycle multiplication and hardware division, support hardware floating point operation (FPU) 64KB SRAM, 256KB FlashPower supply voltage: 2.5/3.3V, power supply for GPIO unit Multiple low power consumption modes: sleep, stop, standbyPower-on/off reset, programmable voltage detector 2 groups of 18-way general- DMA4 sets of operational amplifier comparators1 random number generator TRNG2 sets of 12-bit DAC conversion2 units, 16 channels, 12-bit ADC conversion, 16 touch keys, TouchKey, 10 groups of USB2.0 full-speed OTG interfaceUSB2.0 high-speed host/device interface (480Mbps built-in PHY) 3 USART interfaces and 5 UART interfaces2 CAN interfaces (2.0B active)SDI0 interface, FSMC interface, DVP digital image interface2 groups of 11C interfaces, 3 groups of SPI interfaces, 2 groups of 1IS interfaces Gigabit Ethernet controller ETH (built-in 10M PHY)80 1/0 ports, can be mapped to 16 external interrupt calculation units, 96-bit chip unique IDSerial 2-wire debug interfaceDue to different production batches, the appearance and color of the product may be different, which does not affect use.Colour:As ShownMaterial:PCBPackage Contents:1 * Development board1 set * pin headerOnly 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.