Hi all!

I am a newbee working on designing a microcontroller based system. In my application there are a few (<20) setable parameters. I need to retain the last set values of these parameters on power on. Using an NVRAM don't seem to be a good idea because there are only a few values to store and also because it is a low cost system and it is desired to keep the hardware to the minimum. I saw a few similar products in which such data retention is there but they only use a microcontroller (like P89c52x2 with no IAP). The only thing I can think of is that they are storing the values in the FLASH, but how? I have been searching the net since last couple of hours and I have found many articles in which I only hope I'll find something of use (once I've read it). I would greatly appreciate some quick comments/tips from here.

Regards.