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RTC DS 1302 ASM CODE needed (RTC doesn't count)

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tapan.entc

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RTC DS 1302 ASM CODE

I HAVE WRITTEN ASM CODE FOR DS 1302.
I HAVE WRITE TIME TO RTC REGISTER AND READIND THE TIME WHICH IS CORRECT.

BUT THE PROBLEM IS THE TIME IS NOT INCREASING...

CAN ANY ONE HELP ME???
 

RTC DS 1302 ASM CODE

Hi,
At address 00H(address 0), bit 7 is CH (clock halt). Make sure that you have cleared this bit. Unless you do so, time is not counted. Once cleared, your problem should be solved.
Hope this helps.
Tahmid.
 

I have interfaced ds1302 with 89c2051 in 7segment. The clock is running very nice but occassionally the 10 hour digit gives wrong value, this fault is not regular, also when it appears ,the fault does not disappear on reset of mcrocontroller. Please help ?
 

change ds1302 with a new piece and find whether the same problem appears.
 

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