Hi everyone, I am working on a project which requires an interrupt every 1 second,and it has DS1307 for other uses also. So I decided to use the square wave output of 1Hz from the DS1307. The problem is I am not getting any oscillations in that pin the DS1307 simply pulls the pin down and hence it …

[SOLVED]Not getting square wave output from SQW pin of DS1307

Grumpy_Mike April 18, 2014, 7:30am 2

The SQW pin is an open collector output so do you have a pull up resistor on it?

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