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[SOLVED] a problem in ds1307 rtc

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falcon00002002

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hi all
i have 2 crystals ds1307 pic 16f628a lcd 2*16
and i have a problem the seconds not count i check the crystal and install the second one and install a 4Mhz crystal and still the same problem the second not count (and the sqwe led not run)
please help me
 

The DS1307 usually runs from a 32.768 kHz crystal.
You can run your PIC from a 4Mhz crystal.

Please try to explain your problem in more detail.
 

hi all
this problem is solved and the clock is working very well
the crystal is 32.768kHz
we must sure that ch=o.
"Please note that the initial power-on state of all registers is not defined. Therefore, it is important
to enable the oscillator (CH bit = 0) during initial configuration."
thanks all
 

Pls post the sch and codes (Asm & HEX). Thanks in advance.
Satheesh
:)
 

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