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MSM80C48/49/50, MSM80C35/39/40
PIN CONFIGURATION (TOP VIEW)
T0
XTAL1
XTAL2
RESET
SS
1
2
3
4
5
6
7
8
9
40 VCC
39 T1
38 P27
37 P26
36 P25
VDD
P10
P11
P12
P13
P14
P15
NC
1
2
3
4
5
6
7
8
9
33 DB3
32 DB2
31 DB1
30 DB0
29 ALE
28 WR
27 PSEN
26 RD
25 EA
INT
EA
35 P24
34 P17
33 P16
32 P15
31 P14
30 P13
29 P12
28 P11
27 P10
26 VDD
25 PROG
24 P23
23 P22
22 P21
21 P20
RD
PSEN
WR 10
ALE 11
DB0 12
DB1 13
DB2 14
DB3 15
DB4 16
DB5 17
DB6 18
DB7 19
VSS 20
P16
P17 10
P24 11
24 INT
23 SS
NC: No-connection pin
40-Pin Plastic DIP
44-Pin Plastic QFP
3/20