MB3773 Fujitsu, MB3773 Datasheet - Page 19

• Manufacturer Part Number: MB3773
• Description: Power Supply Monitor with Watch-Dog Timer
• Manufacturer: Fujitsu

•
Output
NOR
CK
CK
CK
Depending on timing, these connections may not be necessary.
Example:R
Q
Q
Q
RESET
RESET
1
2
3
1
2
3
GND
CK
connects from FF1 and FF2 outputs Q
C
T
1
= R
= 0.1 F
FF1
D
CK
EXAMPLE 10 : Circuit for Monitoring Multiple Microcomputers
2
1
1
= 2.2k
R
RESET
RESET
S
Q
Q
GND
1
1
CK
FF2
D
CK
2
2
RESET
RESET
R
S
Q
Q
GND
2
2
CK
1
and Q
FF3
D
CK
3
3
S
R
2
Q
Q
to the NOR input.
3
3
R
2
C
T
MB3773
1
2
3
4
8
7
6
5
R
1
Figure 1
MB3773
V
Figure 2
CC
(=5V)
19