Have started to play with the MSP430G2553 which also involves flash programming. According to the datasheet the segments A-D are the information memory. Segment A is reserved for the controllers calibration values. Reading the content of segment A (0x10C0-0x10FF) indeed shows some data other than blank 0xFF. So far so good.
Based on this I decided to use segment D (0x1000 - 0x103F) for my purposes. To my surprise reading this address range of a new unused controller also shows some data already stored here. I am now unsure if I can use this address range without any impact to the controllers function.
What do you think?