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Common flash memory interface specification

Posted: 26 Jun 2008 ?? ?Print Version ?Bookmark and Share

Keywords:Common Flash Interface? Query interface? flash memory? CFI specification?

The Common Flash Interface (CFI) specification outlines device and host system software interrogation handshake that allows specific vendor-specified software algorithms to be used for entire families of devices. This allows device-independent, Jedec ID-independent, and forward- and backward-compatible software support for the specified flash device families. It allows flash vendors to standardize their existing interfaces for long-term compatibility.

This specification release (as application note by Spansion) defines the basic Query interface for CFI-compliant devices. This allows parameterization of known and future flash read/write/erase control interfaces. This Query structure attempts to define all the critical parameters relevant to a broad base of flash memory devices. The CFI specification will not specify detail command sets, status polling methods, and software algorithms of individual Flash vendors. A 16-bit ID code is assigned to specific manufacturers? interfaces, and it is up to that manufacturer to provide these detailed specifications.

View the PDF document for more information.

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