16
ICM7228
Test Circuit
FIGURE 18. FUNCTIONAL TEST CIRCUIT #1
ID6 (HEXA/CODE B)
ID5 (DECODE)
ID7 (DATA COMING)
WRITE
MODE
ID4 (SHUTDOWN
)
ID1
ID0
ID2
ID3
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
D8 D7 D6 D5 D4 D3 D2 D1
f
d
g
a
c
e
b
DP
COMMON ANODE DISPLAY
V
DD
47µF
+0.1µF
V
SS
5V
+
-
V
DD
V
SS
ICM7228A
