ICM7211A Datasheet, PDF (8/9 Pages) Intersil Corporation – 4-Digit, LCD Display Driver

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