AT/TS8xC51Rx2
PSEN
EA / VPP
XTAL1
XTAL2
P4.0
P4.1
P4.2
P4.3
P4.4
P4.5
P4.6
P4.7
P5.0
P5.1
P5.2
P5.3
P5.4
P5.5
P5.6
P5.7
67
2
49
48
20
24
26
44
46
50
53
57
60
62
63
7
8
10
13
16
55
58
38
37
11
15
17
33
35
39
42
46
49
51
52
62
63
1
4
7
11
4188F–8051–01/08
