The X28C512/513 supports a 128-byte page write operation, effectively providing a 39s/byte write cycle and enabling the entire memory to be written in less than 2.5 seconds. The X28C512/513 also features DATA Polling and Toggle Bit Polling, system software support schemes used to indicate the early completion of a write cycle. In addition, the X28C512/513 supports the Software Data Protection option.