Is UICR really a full 1K flash page?

[Clem Taylor]

I'm putting some bootloader and static config data in the customer section of the UICR and I accidentally wrote to 0x1001200 and worked just fine.

Looking closer, it seems that UICR is actually a full 1K flash page, even though the reference manual only only mentions addresses up to 0x100010FF.

I can easily find a use for the extra space, is there any reason not to use the full UICR page?

Why wouldn't the reference manual specify that it is a full 1K page?

[azdem]

Have you checked whether it is really written to 0x1001200? If some of the address bits are "don't care", it may be written to (and read from) 0x1001000 indeed...