I use the SmartEeprom of an ATSAMD51J20A µC. The current and working
configuration has a total eeprom size of 1024 bytes (fuses: SEEBLK =
0x08 and SEEPSZ = 0x01). Now I need to increase the size up to 2048, but
unfortunately this doesn't work.
If i set the fuses to SEEBLK = 0x10 and SEEPSZ = 0x01, the appropriate
gui in my IDE (microchip studio) writes 0x00 into SEEBLK! After some
trial and error, it seems to me that the upper 4 bits of SEEBLK are
ignored by the fuse-programing tool of microchip studio. For example, if
I want to program 0x16 to SEEBLK (i know invalid configuration) a 0x06
is programed to the SEEBLK Fuse. If i want to program 0x12, it programs
just 0x02... I didn't find any limitations in the data sheet, the
corresponding tables theoretically provides configurations with
significantly more eeprom size and the µC has 1MB flash available.
Does anyone have experience with this and uses the SmartEeprom with the
mentioned µC with a size of more than 1024 bytes?