USB interface support download (DFU download, not serial port);OLED interface - plug and play support 0.96 inch OLED TFT liquid crystal interface;Connect 1.44 inch full color LCD;Connect 1.8 inch full color LCD;Data storage: W25Q16 High speed crystal oscillator 8MHz;Low frequency crystal: 32.768K Power + programmable LED lights; and reset button All CPU-IO leads 2.54 integer pitch pins Parameter: : - 32 bit RISC Features: Single- DSP instructions Operating frequency: 168MHZ, 210DMIPS/1.25DMIPS/MHz Working voltage: 1.8-3.6V Package: LQFP100 Storage : ( specification is 1M capacity) 192+4KB SRAM Resources: 3*SPI, 3*USART 2*UART, 2*I2S, 3*12C 1*FSMC, 1*SDIO, 2*CAN; 1*USB 2.0 / controller (with dedicated DMA) 1*USB ULPI (for external USB PHY) 1*10/100Ethemet 1*8 to 12-bit parallel camera interrace 3*AD (12-bit, 1us, time-sharing 24), 2*DA (12-bit) colour: black Material: PCB Package Contents: 1*System Core Board Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed error is +/- 1-3cm.