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The AT45DB641E is a 1.7V minimum, serial-interface sequential access Flash memory ideally suited for a wide variety of digital voice, image, program code, and data storage applications. The AT45DB641E also supports the RapidS serial interface for applications requiring very high speed operation. Its 69,206,016 bits of memory are organized as 32,768 pages of 256 bytes or 264 bytes each. In addition to the main memory, the AT45DB641E also contains two SRAM buffers of 256/264 bytes each. Interleaving between both buffers can dramatically increase a system's ability to write a continuous data stream. In addition, the SRAM buffers can be used as additional system scratch pad memory, and E 2PROM emulation (bit or byte alterability) can be easily handled with a self-contained three step read-modify-write operation.