The AT25DF081 is a serial interface Flash memory device designed for use in a widevariety of high-volume consumer based applications in which program code is shadowedfrom Flash memory into embedded or external RAM for execution. The flexibleerase architecture of the AT25DF081, with its erase granularity as small as 4-Kbytes,makes it ideal for data storage as well, eliminating the need for additional data storageEEPROM devices.The physical sectoring and the erase block sizes of the AT25DF081 have been optimizedto meet the needs of today's code and data storage applications. By optimizingthe size of the physical sectors and erase blocks, the memory space can be usedmuch more efficiently. Because certain code modules and data storage segmentsmust reside by themselves in their own protected sectors, the wasted and unusedmemory space that occurs with large sectored and large block erase Flash memorydevices can be greatly reduced. This increased memory space efficiency allows additionalcode routines and data storage segments to be added while still maintaining thesame overall device density.