ADDR drives the hardware half-word offset address to the NVM
when a command is executed using CMDEX. This register is also automatically updated
when writing to the page buffer.
Example:
For erasing the 3rd row in the Flash memory, spanning from 0x00000200 to 0x000002FF,
ADDR should be written with the half-word offset address of any half-word within this
range, that is any value between 0x100 and 0x17F.
For erasing the 5th row in the Data Flash memory, spanning from 0x00400400 to
0x004004FF, ADDR should be written with the half-word offset address of any half-word
within this range, that is any value between 0x200 and 0x27F.