MCU,SRAM,Flash memory,voltage regulator. Applied in a highly reliable computable system, f.g ... controllor It includes micro-controllor, 1MBytes SRAM, 2Mbytes flash memory, voltage regulator, 2 channels DB-9 serial port connector, 1 USB connector ... ) , 1 USB connector4 serial interface (2 internal + 2 URAT)Voltage regulatorInterface used in smart card slotSAM slotSupport LCD moduleButton switches ...