X40020_06 Datasheet, PDF(21/24 Page) Intersil Corporation – Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch

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X40020_06 Datasheet, PDF (21/24 Pages) Intersil Corporation – Dual Voltage Monitor with Integrated CPU Supervisor and System Battery Switch

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X40020, 40021

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

SCL

tRST tWDO tRST

tTHD

tVPH

tVPO

SDA

A0h

Start

00h

tWC

*01h sets VTRIP1 *03h resets VTRIP1

*09h sets VTRIP2 *0Bh resets VTRIP2

* all others reserved

FN8112.1

May 17, 2006

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