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Using write buffers

Posted: 13 Oct 2008     Print Version  Bookmark and Share

Keywords:MirrorBit devices  flash memory  buffer programming 

The write buffer in Spansion MirrorBit flash memory devices is designed to reduce the overall system programming time when writing to the flash device. The host system first fills the write buffer with data, and then issues the write buffer programming command. The flash device programs the buffered data in parallel, and thus reduces the programming time compared to programming bytes or words one at a time. Depending on the device design, a write buffer can store up to 32 words (64bytes) of data that can then be written using a single programming operation.

MirrorBit devices use a specific, additional set of commands to accomplish write buffer programming. Refer to the appropriate Spansion data sheet for the complete list of device commands. The page buffer read function accelerates read operations for addresses within a specific range.

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