S-19400 Datasheet, PDF (18/36 Pages) Seiko Instruments Inc – Watchdog operation voltage range

FOR AUTOMOTIVE 125°C OPERATION LOW CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series
Rev.2.1_00
4. 2 Counter reset due to falling edge detection
(S-1940xBxxA, S-1940xExxA, S-1940xHxxA, S-1940xKxxA)
VDD
CPOR
CWDT
1234
1234 1234
WDI
WEN
(Active "H")
WDO
Counter reset due to falling edge detection
RST
(S-19401 only)
Figure 30
4. 3 Counter reset due to both rising and falling edges detection 1
(S-1940xCxxA, S-1940xFxxA, S-1940xIxxA, S-1940xLxxA)
1 234
30 31 32
1
Time-out after counter reset
VDD
CPOR
CWDT
WDI
WEN
(Active "H")
WDO
RST
(S-19401 only)
1234
1234
1234 12 12
30 31 32
12
Counter reset due to
both rising and falling edges detection
Time-out after counter reset
Figure 31
18