user15789: Well, I hope this question won' t be buried to the dark depths of this forum as my previous q' s:) But I suppose it won' t this time cause it's pretty short without this introduction part...
I have an Arduino pro mini works with 3.3V and in the other hand, I have a DS1307 DIP ic, works with +3V. I was wondering if I could connect the ic to my Arduino directly.
Thats all. Thanks already:)

user368: The 3V input on the DS1307 is for a 3V battery, usually a CR2032 or similar. The supply voltage of the DS1307 is 5V, which means that it won't work with a 3.3V Arduino without a separate supply and level shifter.

15789: <p>Well, I hope this question won' t be buried to the dark depths of this forum as my previous q' s:) But I suppose it won' t this time cause it's pretty short without this introduction part...</p>

<p>I have an Arduino pro mini works with 3.3V and in the other hand, I have a DS1307 DIP ic, works with +3V. I was wondering if I could connect the ic to my Arduino directly.</p>

<p>Thats all. Thanks already:)</p>
 368: <p>The 3V input on the DS1307 is for a 3V battery, usually a CR2032 or similar. The <em>supply</em> voltage of the DS1307 is 5V, which means that it won't work with a 3.3V Arduino without a separate supply and level shifter.</p>
