S-19400 Datasheet, PDF (5/36 Pages) Seiko Instruments Inc – Watchdog operation voltage range

FOR AUTOMOTIVE 125°C OPERATION LOW CURRENT CONSUMPTION WATCHDOG TIMER WITH RESET FUNCTION
Rev.2.1_00
S-19400/19401 Series
 Pin Configurations
1. TMSOP-8
Top view
1
8
2
7
3
6
4
5
Figure 3
Table 3
Pin No.
1
2
3
4
5
6
7
8
___
S-19400 Series (Product with W / T pin)
Symbol
___
W
/ T^*1
Description
Watchdog mode switching pin
CPOR
Reset time-out period adjustment pin
CWDT
Watchdog time adjustment pin
VSS
GND pin
WEN
________
WDO
Watchdog enable pin
Watchdog output pin
WDI
Watchdog input pin
VDD
Voltage input pin
___
*1. W_{___} / T pin = "H": Time-out mode
W / T pin = "L": Window mode
Table 4
Pin No.
1
2
3
4
5
6
7
8
___
S-19401 Series (Product without W / T pin)
Symbol
_______
RST
Description
Reset output pin
CPOR
Reset time-out period adjustment pin
CWDT
Watchdog time adjustment pin
VSS
GND pin
_^W___^E__^N__
WDO
Watchdog enable pin
Watchdog output pin
WDI
Watchdog input pin
VDD
Voltage input pin
5