... 181912MHz40 29 303191716151413 12 1110RD\WR\T1T0INT1INT0TXDRXDA15A14A13A 12 A11A10A9A8 28 27 26 25 24 23 22 21 876543 2 1 32 33343536373839Po.7Po.6Po.5Po.4Po.3Po .2 Po.1Po.0AD7AD6AD5AD4AD3AD2AD1AD0P1.7P1.6P1.5P1.4P1.3P1 .2 P1.1P1.0P2.7P2.6P2.5P2.4P2.3P2 .2 P2.1P2.0PSEN\ALEEA\RETVcc 20 Vss30p30pXTAL1XTAL2ABCDA',B',C',D'gr0:ACALL ... 181912MHz40 29 303191716151413 12 1110RD\WR\T1T0INT1INT0TXDRXDA15A14A13A 12 A11A10A9A8 28 27 26 25 24 23 22 21 876543 2 1 32 33343536373839Po.7Po.6Po.5Po.4Po.3Po .2 Po.1Po.0AD7AD6AD5AD4AD3AD2AD1AD0P1.7P1.6P1.5P1.4P1.3P1 .2 P1.1P1.0P2.7P2.6P2.5P2.4P2.3P2 .2 P2.1P2.0PSEN\ALEEA\RETVcc 20 Vss30p30pXTAL1XTAL2ABCDA',B',C',D'gr0:ACALL trightACALL delayDJNZ R4,gr0sjmp l; INT 01 int0:MOV R2,AMOV ... T1*T 2 * P0 P1 P 2 P3 INT\*1INT\*0 TIMER2TIMER1PORT nối tiếp EA\ RST PSEN ALE Các thanh ghi khác 128 byte Ram Rom4K-8051OK-8031Timer1Timer2 Điều khiển ngắtĐiều...