Datasheet

7
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FN3158.5
November 16, 2004
Typical Application
FIGURE 7. 80C48 MICROPROCESSOR INTERFACE
28
40
39 T1
P27 38
37
36
35
P17 34
33
32
31
30
29
P10 27
26
PROG
22
24
23
P20 21
80C48
µCOMPUTER
2 XTAL1
13
3 XTAL2
4 RESET
5 SS
6 INT
7 EA
RD
DB0 12
14
15
16
17
18
19
20
1 TO
PSEN
ALE
V
CC
V
DD
V
SS
11 9 25
DB7
10 8
27 28 29 30
CS2
36 OSC
35 V
SS
1 V
DD
+5V
8 DIGIT
LCD DISPLAY
SEGMENTS
HIGH ORDER DIGITS
ICM7211AM
INPUT
NC
+5V
I/O
I/O
DS1 DS2 CS1
31 32 33 34
DATA
2, 3, 4
BP 5
37-40
6-26
B0-B3
292827 30
CS2
36 OSC
35 V
SS
1 V
DD
+5V
SEGMENTS
LOW ORDER DIGITS
ICM7211AM
DS1 DS2 CS1
31 32 33 34
DATA
2, 3, 4
BP 5
37-40
6-26
B0-B3
WR
ICM7211AMICM7211AM