Datasheet

9-16
Test Circuit
FIGURE 11.
Typical Applications
FIGURE 12. GANGED ICM7211’s DRIVING 8-DIGIT LCD DISPLAY
13
1
2
3
4
5
6
7
8
9
10
11
12
14
15
16
17
18
19
20
28
40
39
38
37
36
35
34
33
32
31
30
29
27
26
25
24
23
22
21
DIGIT/CHIP
ICM7211AM
DATA
INPUTS
SELECT
INPUTS
V
SS
OSC
V
DD
BP
V
DD
V
DD
V
SS
MICROPROCESSOR
VERSION
MULTIPLEXED
VERSION
EACH SEGMENT
OUTPUT TO
BACKPLANE
WITH A 200pF
CAPACITOR
+ -
V
SS
V
DD
D8 D7 D6 D5 D4 D3 D2 D1
D1
D2
D3
D4
D5
D6
D7
D8
B3-B0 D4 D3 D2 D1 BP
OSC
V
SS
V
DD
B3-B0 D4 D3 D2 D1 BP
OSC
V
SS
V
DD
+5V
BCD/BINARY
DATA
8-DIGIT
LCD DISPLAY
BACKPLANE
SLAVE
28
4
BACKPLANE
MASTER
4
4
28
BACKPLANE
DIGIT
SELECTS
SEGMENTS
HIGH ORDER
ICM7211A
SEGMENTS
LOW ORDER
ICM7211A
+5V
ICM7211, ICM7212