... , 1MBytes SRAM, 2Mbytes flash memory, voltage regulator, 2 channels DB-9 serial port connector, 1 USB connector ... 0”(DB-9, J3) ,or USB port(J25)2 connectors(DB-9, RS-232) , 1 USB connector4 serial ... out through spacing 0.254 standard single row pin header. Add LED nixie tube, U8 can ... external square smart card slot through spacing 2.54mm single row pin header.SAM slot: evaluation kit offer standard ...