User's Guide

Timerinterrupt(TINTLO)

CNTHI

Internal

clock

64-bittimercounter

Timerperiod

PRDHI

Inputclock

CLKSRC=0

CP_LO=0

PWID_LO

Watchdoglogic

and

pulsegenerator

INVOUTP_LO

TSTAT_LObitinTCR

(CopiedtoWDFLAGbitinWDTCR)

OutputviaTOUTL pin

(CanconnectTOUTL toaninterruptpin)

Equalitycomparator

CNTLO

PRDLO

WDEN,WDKEY

Watchdog Timer Mode

www.ti.com

Figure 11. Timer in Watchdog Timer Mode

To activate the watchdog timer, a certain sequence of events must be followed, as shown in the state

diagram, Figure 12.

C6472/TCI648x 64-Bit Timer SPRU818B–December 2005–Revised September 2010

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