[SOLVED] Ds1307 and 18f452 Error with external batery backup

[buddhikaneel]

Hi. my dear firends.

I have made clock using DS1307 and 18f452. crystal also connected. SDL, SDA also connected well and pull up it using 10k Resistors. if i ground Battery pin clock is working well. Then i attach external battery to it (+) and (-) was grounded. then it's not working correctly it displays "@5 @5 @5" like wrong. Then i was connected LED bulb between battery pin and ground pin parallel. Then it was working correct. What could be the wrong with me..

Thank you...

 

[bigdogguru]

Can you post schematic of your design?

What is the voltage of the battery, you are attempting to utilize?

What are the current Configuration Bit settings?

BigDog

 

[buddhikaneel]

I attach Sehematic and codeing togerther.

 

[buddhikaneel]

i found wrong i did. i attached wrong power for RTC. Now i set 3.v battery. it is working well. thank for help....