The Common Flash Memory Interface (CFI) is an open standard jointly developed by
AMD
Advanced Micro Devices, Inc. (AMD) is an American multinational semiconductor company based in Santa Clara, California, that develops computer processors and related technologies for business and consumer markets. While it initially manufactur ...
,
Intel
Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the developers of the x86 seri ...
,
Sharp
Sharp or SHARP may refer to:
Acronyms
* SHARP (helmet ratings) (Safety Helmet Assessment and Rating Programme), a British motorcycle helmet safety rating scheme
* Self Help Addiction Recovery Program, a charitable organisation founded in 19 ...
and
Fujitsu. It is implementable by all
flash memory vendors, and has been approved by the non-volatile-memory subcommittee of
JEDEC
The JEDEC Solid State Technology Association is an independent semiconductor engineering trade organization and standardization body headquartered in Arlington County, Virginia, United States.
JEDEC has over 300 members, including some of the w ...
. The goal of the specification is the interchangeability of flash memory devices offered by different vendors. The developer is able to use one driver for different flash products by reading identifying information from the flash chip.
Each flash memory device contains the following information: memory size, byte and word configuration, block configuration, and voltage and timing data.
The specification provides several benefits. No or very little information about flash devices has to be stored in tables within system software. It is possible to use lower cost flash memory devices as they become available without rewriting system software. Adapting current software systems shall be done more easily and quickly than previously.
Support for CFI is implemented in
FreeBSD.
See also
*
Open NAND Flash Interface Specification (ONFi)
References
{{Reflist
External links
JEDEC - free documents require registration
JEDEC - Common Flash Interface (CFI) Specification, JESD68.01, September 2003. JEDEC - CFI ID Codes, JEP137B, May 2004JEDEC - Standard Manufacturers ID Code, JEP106AC, August 2010Spansion
Common Flash Interface Publication 100 (CFI Vendor & Device ID Code Assignments), 2001.Original link
Spansion - App Note - CFI Spec, 2008.
Original link
Spansion - App Note - Using CFI to Read and Debug Systems, 2007.
Original link
Spansion - Quick Guide to Common Flash Interface, 2008.
AMD
Non-volatile memory
AMD technologies