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| X40420 Datasheet, PDF (21/25 Pages) Xicor Inc. – Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch | |||
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X40420, X40421
Watchdog Time Out For 2-Wire Interface
Start
Clockin (0 or 1)
tRSP
Start
< tWDO
SCL
SDA
WDO
Start
Minimum Sequence to Reset WDT
SCL
SDA
VTRIPX Set/Reset Conditions
(VTRIPX)
tTSU
WDO
tVPS
WDT
Restart
VCC/V2MON
VP
SCL
0
70
70
tRST tWDO tRST
tTHD
tVPH
tVPO
7
SDA
A0h
Start
00h
tWC
01h* sets VTRIP1 03h* resets VTRIP1
09h* sets VTRIP2 0Bh* resets VTRIP2
* all others reserved
21
March 28, 2005
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