also, I don't know if I would want to be using that area as essentially a scratch pad unless you can store 2 copies of a table in it... pretty sure the erase/write process takes quite some time for all 512 bytes, but considering the documentation Motorola gave, it seems like you can do row erases and essentially only update what is needed.... while writing new values, reference old ones, which would then get updated once the new values are written to another table, buffering to keep them both up to date.