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(4) 74-pin plastic QFP (20 × 20 mm)
P50/A8
1
P47/AD7
2
P46/AD6
3
P45/AD5
4
P44/AD4
5
P43/AD3
6
P42/AD2
7
V
8
SS
V
9
SS
P41/AD1
10
P40/AD0
11
ASTB
12
NC
13
P20/NMI
14
P21/INTP0
15
P22/INTP1
16
P23/INTP2/CI
17
P24/INTP3
18
Remark The NC pins are not connected inside the chip.
74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57
19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
Chapter 1 General
56
P65/WR
55
P66/WAIT/AN6
54
P67/REFRQ/AN7
53
P07
52
NC
51
P06
50
P05
49
P04
48
P03
47
NC
46
P02
45
P01
44
P00
43
P37/TO3
42
P36/TO2
41
P35/TO1
40
NC
39
P34/TO0
38
P70/AN0
1
9
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