PCF8563 date data corrupted

[richard]

you need to mask off the bits that are not used for the value being returned

    minu = minu & $7f
    hrs  = hrs  & $3f
    Dow  = dow  & 7
    Dom  = dom  & $3f
    mon  = mon  & $1f

[Hebemabo]

Thank you very much Richard , your advice fixed my problem.
I am so happy 'cause I really like this chip.
Now I can apply my mind to getting an interrupt every minute which
appears to be quite cumbersome.

Regards
Hebe