I am designing a product that may be subject to unexpected power cuts. It's my understanding that in general, EEPROMs perform writes by:
- Erasing the page, setting all bits to 1
- Programming the page, clearing bits to 0 as appropriate
Is this how the PCA9500's write cycle works? In particular,
- If I perform a page write to bytes at addresses 0, 1, 2, and 3, and then I cut the power during the write, is it possible for the data at those addresses to be neither the original data nor the written data?
- If I perform a byte write at address 1 and then I cut power during the write, is it possible for data at addresses 0, 2, and 3 to be corrupted?
I believe the answer to these questions is "yes," but I'd like to confirm that.
