... standard JTAG test / debug interface and debug serial line and serial line tracking port option simulation trace module supports real-time tracking ... -board resources:1,2-Way RS232 serial interface (using the straight-through serial cable, serial port support them all the way ISP ... , FAT32 file system)10, IIC Interface (24LC02)11, SPI serial FLASH interfaces (AT45DB161D)12,2 user keys, 2 function keys ...