ICM7216A Intersil Corporation, ICM7216A Datasheet - Page 15

• Manufacturer Part Number: ICM7216A
• Description: 8-digit, Multi-function, Frequency Counters/timers
• Manufacturer: Intersil Corporation

10
P
P
4
OVERFLOW
INDICATOR
RESET
100pF
0.1 F
Q 6
K 12
Q 7
J 3
LED
1
1
INPUT A
/
/
13 CL
2
2
1 CL
74LS112
74LS112
D1
D2
D3
D4
D5
D6
D7
D8
8
a
b
c
d
e
f
g
DP
D8
10
11
12
13
14
1
2
3
4
5
6
7
8
9
K 2
Q 5
Q 9
J 11
D8
ICM7216D
C
15
C
14
10k
D7
ICM7216A, ICM7216B, ICM7216D
FIGURE 19. 40MHz FREQUENCY COUNTER
3k
28
27
26
25
24
23
22
21
20
19
18
17
16
15
COMMON CATHODE LED DISPLAY
D6
V
V+
DP
g
e
a
d
b
c
f
DD
HOLD
D5
V
DD
9-24
10k
100k
D4
22M
D3
V
8
DD
CRYSTAL
2.5MHz
39pF
D2
D1
D4
D2
D3
V
RANGE
DD
39pF
D1
ENABLE
OSC
EXT
8
D1
4
DP
DISPLAY
a
b
c
d
e
g
OVERFLOW
IN914s
f
INDICATOR
OFF
D4
DISPLAY
TEST
3
D8
INPUT
OSC
EXT