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Número de pieza
componentes Descripción
ICM7226ALJL Ver la hoja de datos (PDF) - Intersil
Número de pieza
componentes Descripción
Fabricante
ICM7226ALJL
8-Digit, Multi-Function, Frequency Counter/Timer
Intersil
ICM7226ALJL Datasheet PDF : 19 Pages
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19
Test Circuit
V
DD
= 5.0V
ICM7226A, ICM7226B
DISPLAY DISPLAY
EXT EXT
OFF TEST
1MHz
OSC DP
TEST
FUNCTION
GENERATOR
INPUT A
EXT OSC IN
FUNCTION
GENERATOR
CONTROL INPUT
D4
D8
39pF
FUNCTION
V
SS
GENERATOR
1
INPUT B
2
10k
Ω
40
HOLD
39
V
DD
MEAS IN PROGRESS 3
38
BUF OSC OUT
4
FUNCTION
37
V
DD
10K
STORE
5
36
D1
D8
BCD C 6
BCD D 7
35
34
V
DD
10MHz
CRYSTAL
D2
DP
8
33
22M
Ω
D5
e
9
ICM7226A
32 RST OUT
30pF
39pF
D4
D3
g
10
a
11
31 EXT RANGE
D1
30
V
DD
V
DD
8
12
d
13
b
14
c
15
f
16
BCD B
17
BCD A
18
19
RESET
20
29 D2
28 D3
27 D4
26 D5
25
V
DD
D1
24 D6
D2
5
23 D7
D3
D4
22 D8
100k
Ω
D5
21
D1
D2
D3
100k
Ω
D4
8
D5
8
D6
6
D7
a
b
D8
c
d
e
f
LED
g
OVERFLOW
DP
INDICATOR
D8
D8
D7
D6
D5
D4
D3
D2
D2
D1
D3
D5
1N914s
6
CRYSTAL SPECS. =
F
O
10.00MHz
C
O
22pF
R
S
35
Ω
DENOTES BU
6
WITH 6
CONDUCTORS
8
D1
DEVICE
CATHODE
ANODE
ICM7226A
DP
D8
ICM7226B
D8
DP
NOTE: Overflow will be indicated on the decimal point output of digit 7.
FIGURE 19.
9-27
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