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Part Name
Description
MB3773 View Datasheet(PDF) - Fujitsu
Part Name
Description
Manufacturer
MB3773
Power Supply Monitor with Watch-Dog Timer
Fujitsu
MB3773 Datasheet PDF : 29 Pages
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MB3773
EXAMPLE 10: Circuit for Monitoring Multiple Microprocessor
V
CC
(
=
5 V)
FF1
S
D
1
Q
1
CK
1
Q
1
R
FF2
S
D
2
Q
2
CK
2
Q
2
R
FF3
S
D
3
Q
3
CK
3
Q
3
R
R
2
R
1
*
*
*
RESET
RESET
RESET
RESET
CK
RESET
CK
RESET
CK
GND
GND
GND
*: Microprocessor
18
27
C
T
3 6
45
MB3773
Notes :
•
connects from FF1 and FF2 outputs Q
1
and Q
2
to the NOR input.
•
Depending on timing, these connections may not be necessary.
•
Example : R
1
=
R
2
=
2.2 k
Ω
C
T
=
0.1
µ
F
Figure 1
CK
1
Q
1
CK
2
Q
2
CK
3
Q
3
NOR
Output
Figure 2
22
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