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MB3773
FF1
D
CK
*
RESET
RESET
CK
GND
*: Microprocessor
Notes :
Depending on timing, these connections may not be necessary.
Example : R
CK
1
Q
1
CK
2
Q
2
CK
3
Q
3
NOR
Output
22
EXAMPLE 10: Circuit for Monitoring Multiple Microprocessor
FF2
S
S
Q
D
Q
1
1
2
2
Q
CK
Q
1
1
2
2
R
R
*
*
RESET
RESET
RESET
RESET
CK
CK
GND
GND
connects from FF1 and FF2 outputs Q
R
2.2 k
1
2
C
0.1 F
T
FF3
S
D
Q
3
3
CK
Q
3
3
R
R
2
1
2
3
C
T
4
MB3773
and Q
to the NOR input.
1
2
V
(
5 V)
CC
R
1
8
7
6
5
Figure 1
Figure 2
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