demkat1:
ok,
It did work, so there is no problem (conserning programming) any more .
But, unfortunately I had in mind that chip's registers will keep programmed data and the module could be a "standalone" generator. I cant say how this "stick" into my mind, I dont see any eeprom or something similar.
So, a microcontroller (a nano or mini pro is fine) must be included in the project....Thank you all.
Chips with that feature are very likely to have it called out in the description on the first page of the datasheet. DACs and digipots are common types of ICs that might have nonvolatile EEPROM-backed registers.