Hallo friends,
I use a AT89S52 in combination with a RTC DS1302. It works fine, but I saw with counter the crystal runs with 32.940Hz. I want to correct it (1min per ano is ok). I believe to correct it is possible with trimmer (-40pF) OR: I hope it is possible to destroy some per program given seconds per day per programm.
Can anyone help me please.

with regards
Manfred POMUTZ