Datasheet

3
AT89C51AC3
4383D–8051–02/08
Pin Configuration
PLCC44
P1.3/AN3/CEX0 P1.2/AN2/ECI P1.1/AN1/T2EX P1.0/AN 0/T2 VAREF VAGND RESET VSS VCC XTAL1 XTAL2
P3.7/RD
P4.0 P4.1
P2.7/A15 P2.6/A14 P2.5/A13 P2.4/A12 P2.3/A11 P2.2/A10
P2.1/A9
P3.6/WR
39
38
37
36
35
34
33
32
29
30
31
7
8
9
10
11
12
13
14
17
16
15
18 19 20 21 22 23 24 25 26 27 28
6 5 4 3 2
44 43 42 41 40
ALE
PSEN
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.2/AD2
P0.3/AD3
P0.4/AD4
P0.1/AD1
P0.0/AD0
P2.0/A8
P1.4/AN4/CEX1
P1.5/AN5/CEX2
P1.6/AN6/CEX3
P1.7/AN7/CEX4
EA
P3.0/RxD
P3.1/TxD
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
1
43 42 41 40 3944
38 37 36 35 34
12 13 17161514 201918 21 22
33
32
31
30
29
28
27
26
25
24
23
VQFP44
1
2
3
4
5
6
7
8
9
10
11
P1.4/AN4/CEX1
P1.5/AN5/CEX2
P1.6/AN6/CEX3
P1.7/AN7/CEX4
EA
P3.0/RxD
P3.1/TxD
P3.2/INT0
P3.3/INT1
P3.4/T0
P3.5/T1
ALE
PSEN
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.2 /AD2
P0.3 /AD3
P0.4 /AD4
P0.1 /AD1
P0.0 /AD0
P2.0/A8
P1.3/AN3/CEX0 P1.2/AN2/ECI P1.1/AN1/T2EX P1.0/AN 0/T2 VAREF VAGND RESET VSS VCC XTAL1 XTAL2
P3.7/RD
P4.0 P4.1
P2.7/A15 P2.6/A14 P2.5/A13 P2.4/A12 P2.3/A11 P2.2/A10
P2.1/A9
P3.6/WR