What speed crystal do you have on pin 1 and 2... You need to use a 32khz one... you also need a 3v battery across pins 3 and 4... Have you a scope to check the crystal is running???
After I turn off my microcontroller oscillator is turned off.
If I do it again I get the information I need to set the ch bit.
In this case, The second change.
No! It indicates that your battery backup isn't connected.... If there is no external battery, when you cycle the DS1307's power, it defaults to power on reset..