ICM7216B_04 Datasheet, PDF (17/18 Pages) Intersil Corporation – 8-Digit, Multi-Function, Frequency Counters/Timers

ICM7216B, ICM7216D
INPUT A
11C90
CK1
CK2 QA OC
V_DD
3kΩ
10kΩ
V_DD
FUNCTION SWITCH
OPEN: FREQ.
CLOSED: PERIOD
0.1µF
RESET
10kΩ
1
CONT D1
2
13
CD4016
4
CONT ^D8
3
5
74LS00
3kΩ
V_DD
100pF
V_DD
HOLD
V_DD
V_DD
10kΩ
100kΩ
39pF
39pF
TYP
2N2222
10kΩ
10kΩ
1
V⁺
2
3
DP
4
e
5
g
6
28
27
22MΩ
D3
10MHz
26
CRYSTAL
25
24
D1
8
23
a
7
22
D2
ICM7216A
8
21
D3
d
9
20
D4
b
10
c
11
f
12
19
D5
18
V_DD
17
D6
4
4
2N2222
1kΩ
V_SS V_SS
13
16
D7
RANGE
DP
1kΩ
14
15
D8
D1
D1
D2
D2 1kΩ
8
a
b
c
d
e
f
g
10kΩ
COMMON ANODE LED DISPLAY
D3
D4
LED
OVERFLOW
D8 _INDICATOR D8
D7
D6
D5
D4
D3
D4
2N2222
40Ω
D3
D2
DP
D1
8
FIGURE 18. 100MHz FREQUENCY, 2MHz PERIOD COUNTER
17