ICM7249 Datasheet, PDF (6/9 Pages) Intersil Corporation – 51/2 Digit LCD, Micro-Power Event/Hour Meter

Timing Waveforms (Continued)
ICM7249
BP
14
15
16
17
64
1
2
DT
ALL SEGMENTS
ON OR OFF
ALL SEGMENTS ON
ALL SEGMENTS OFF
DISPLAY RESTORED
FIGURE 6. DISPLAY TESTING
Pin Descriptions
PIN
NAME
DESCRIPTION
1
b6/c6 Half-Digit LCD Segment Output.
2
f5
Seven-Segment LCD Output.
3
g5
Seven-Segment LCD Output.
4
e5
Seven-Segment LCD Output.
5
d5
Seven-Segment LCD Output.
6
c5
Seven-Segment LCD Output.
7
b5
Seven-Segment LCD Output.
8
a5
Seven-Segment LCD Output.
9
f4
Seven-Segment LCD Output.
10
g4
Seven-Segment LCD Output.
11
e4
Seven-Segment LCD Output.
12
d4
Seven-Segment LCD Output.
13
c4
Seven-Segment LCD Output.
14
b4
Seven-Segment LCD Output.
15
a4
Seven-Segment LCD Output.
16
f3
Seven-Segment LCD Output.
17
g3
Seven-Segment LCD Output.
18
e3
Seven-Segment LCD Output.
19
d3
Seven-Segment LCD Output.
20
c3
Seven-Segment LCD Output.
21
b3
Seven-Segment LCD Output.
22
a3
Seven-Segment LCD Output.
23
f2
Seven-Segment LCD Output.
24
g2
Seven-Segment LCD Output.
PIN
NAME
DESCRIPTION
25
e2
Seven-Segment LCD Output.
26
d2
Seven-Segment LCD Output.
27
c2
Seven-Segment LCD Output.
28
b2
Seven-Segment LCD Output.
29
a2
Seven-Segment LCD Output.
30
f1
Seven-Segment LCD Output.
31
91
Seven-Segment LCD Output.
32
e1
Seven-Segment LCD Output.
33
d1
Seven-Segment LCD Output.
34
c1
Seven-Segment LCD Output.
35
b1
Seven-Segment LCD Output.
36
a1
Seven-Segment LCD Output.
37
W
Wink-Segment Output.
38
BP
Backplane for LCD Reference.
39
V_DD
Positive Supply Voltage.
40
OSC IN Quartz Crystal Connection.
41
OSC OUT Quartz Crystal Connection.
42
GND
Supply GRouND.
43
C0
Mode-select Control Input.
44
C1
Mode-select Control Input.
45
C2
Mode-select Control Input.
46
C3
Mode-select Control Input.
47
S/S
Start/Stop Input.
48
DT
Display Test Input.
9-28