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| S-19400 Datasheet, PDF (2/36 Pages) Seiko Instruments Inc – Watchdog operation voltage range | |||
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FOR AUTOMOTIVE 125°C OPERATION LOW CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
S-19400/19401 Series
Rev.2.1_00
ï® Block Diagrams
____
1. S-19400 Series (Product with W / T pin)
VDD
WEN
WDI
W/T
Noise
filter
Noise
filter
Noise
filter
CWDT
WDTcircuit
VSS
Reference
voltage
circuit
Voltage detection
circuit
Figure 1
CPOR
____
2. S-19401 Series (Product without W / T pin)
CWDT
VDD
WDO
WEN
WDI
VSS
Noise
filter
Noise
filter
WDT circuit
Reference
voltage
circuit
Voltage detection
circuit
Figure 2
CPOR
RST
WDO
2
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