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02/04/10 02:54
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#172879 - DS1302 - Stop and Restart Clock Problem
I have successfully interfaced DS1302 with 8051.

The application demands that at some of time I need to STOP the Clock, wait for 2 to 5 Seconds and then RESTART the CLOCK.

I am trying to do this using CH bit of DS1302. However am unsuccessful. Even though I am appropriately programming the CH bit = 1 in Seconds Register to STOP the clock and then setting this CH bit = 0 to RESTART the clock - the clock doesn't RESTART.

The CLOCK only starts if i Switch off the System and Switch it back ON.

Why this is happening ? Is there something specific that I need to take care to STOP, WAIT and START the clock again !

If anyone can help !

List of 2 messages in thread
TopicAuthorDate
DS1302 - Stop and Restart Clock Problem            01/01/70 00:00      
   Is CE being pulsed off?            01/01/70 00:00      

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