FUJITSU MB3773 - Manual (Page 22)

MB3773
22
EXAMPLE 10: Circuit for Monitoring Multiple Microprocessor
V
CC
(
=
5 V)
1
2
3
4
8
7
6
5
C
T
MB3773
RESET
RESET
CK
GND
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
RESET
RESET
CK
GND
RESET
RESET
CK
GND
S
D
3
CK
3
R
Q
3
Q
3
S
D
2
CK
2
R
Q
2
Q
2
S
D
1
CK
1
R
Q
1
Q
1
FF3 FF2 FF1
R
2
R
1
CK
1
Q
1
CK
2
Q
2
CK
3
Q
3
NOR
Output
Figure 1
Figure 2
* * *
*: Microprocessor