Xicor X28HC256 EEPROM

Hi,

can anybody tell me where to find more internal information about the
Xicor X28HC256 EEPROM than in the normal product data ***?
I'm especially interested in the page write operation.
Is there an internal RAM in this EEPROM which stores the incoming data
until the page write operation starts? If this is true, does the page
write cycle write the data bytes starting from higher addresses to
lower ones or vice versa?

Thanks

.