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MB3793-30APNF-G-JN-ER6E1

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P29
MB3793-30A
9
3. Single-clock input monitoring (Positive clock pulse)
CTP
RESET
CTW
CK1
Vth
VH
VL
CK2
tWR
tWD
tCKT
tCKW
Note : The MB3793 can monitor only one clock.
The MB3793 checks the clock signal at every other input pulse.
Therefore, set watchdog timer monitor time t
WD to the time that allows the MB3793
to monitor the period twice as long as the input clock pulse.
MB3793-30A
10
4. Inhibition operation (Positive clock pulse)
CTP
RESET
INH
CTW
CK1
CK2
VSH
VCC
VSL
Vth
VH
VL
tPR tWD tPR
tWR
tCKW
(1) (2) (3) (4)(5) (5) (6) (7) (11) (8) (9) (10) (12) (13)
tCKT
MB3793-30A
11
5. Clock pulse input supplementation (Positive clock pulse)
CTW
CK1
CK2
VH
VL
tCKT
tCKW
*
1
*
2
Note : The MB3793 watchdog timer monitors Clock1 (CK1) and Clock2 (CK2) pulses alternately.
When a CK2 pulse is detected after detecting a CK1 pulse, the monitoring time setting capacity
(C
TW) switches to charging from discharging.
When two consecutive pulses occur on one side of this alternation before switching, the second
pulse is ignored.
In the above figure, pulse *1 and *2 are ignored.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P29

MB3793-30APNF-G-JN-ER6E1

Mfr. #:
Buy MB3793-30APNF-G-JN-ER6E1
Manufacturer:
Fujitsu
Description:
Supervisory Circuits BIP-LINEAR INDUSTRY.LINEAR
Lifecycle:
New from this manufacturer.
Delivery:
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