Hi, I'm using an HCS08LG32 with an external display and keypad. I'm looking for a method to accept user preferences, to be used later after power is recycled. For example, when displaying a temperature, the user can input whether the default is Celcius or Fahrenheit. All subsequent uses of the board will then default to the user preference. I would also like to store user inputted programs (a series of keystrokes stored in an array), to be recalled for later user over the life of the product.
I am also using an RTC and want to store the number of hours the uP is in use (when powered with the RTC running) over multiple uses (powered on/off over a period of months).
Any suggestions ? Do I need to use an external Flash/EEPROM ?
BTW. I am coding in C.