X51638
CS/WDI vs. RESET Timing
CS/WDI
RESET
t
CST
t
t
t
t
WDO
RST
WDO
RST
RESET Output Timing (WD1 = 1, WD0 = 0)
Symbol
WDO
Parameter
Min.
300
400
200
Typ.
Max.
Units
ms
t
t
t
Watchdog Timeout Period
400
550
CS Pulse Width to Reset the Watchdog
Reset Timeout
ns
CST
400
600
ms
RST
RESET Output Timing (WD1 = 0, WD0 = 1)
Symbol
WDO
Parameter
Watchdog Timeout Period
CS Pulse Width to Reset the Watchdog
Reset Timeout
Min.
450
400
100
Typ.
Max.
Units
ms
t
t
t
600
800
ns
CST
200
300
ms
RST
RESET Output Timing (WD1 = 0, WD0 = 0)
Symbol
WDO
Parameter
Watchdog Timeout Period
CS Pulse Width to Reset the Watchdog
Reset Timeout
Min.
1
Typ.
Max.
Units
sec
ns
t
t
t
1.4
2
400
100
CST
200
300
ms
RST
15
ETC [ ETC ]
