Problem with reading the time from RTC PCF8563

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Hi
I am using RTC PCF8563, and MSP430F449 I2C Software communication. I can reading the time form the device. second is working fine from 0-59, but when i read the munite it is changing from 0-39. after comes 39 then its starts from 0. so pls any body tell me what may be the problem for this.
thanks in advance.
 

Re: pls advice me

I have done this RTC with atmel 2051 but working fine, I think you are mistaking in the software somewhere, show your coding and schametic then can help you.
 

Re: pls advice me

I think sn_burki is right. It's probably a mistake in the code.
Can you post the code?
 

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