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Quick guide to Common Flash Interface

Posted: 30 Jun 2008 ?? ?Print Version ?Bookmark and Share

Keywords:Common Flash Interface? CFI? Jedec?

Common Flash Interface, or CFI, is a standard introduced by Jedec to allow in-system or programmer reading of flash device characteristics, which is equivalent to having data sheet parameters located in the device. The Jedec Solid State Technology Association defines industry standards for semiconductor devices, with CFI being one of many.

The CFI is used to standardize flash device characteristics and to define feature differences between various flash manufacturers. For a detailed definition of CFI, please refer to the JEDEC CFI publications JEP137 and JESD68. The Spansion application note "Common Flash Interface Version 1.4 Vendor Specific Extensions" provides an overview of versions 1.3 and 1.4 CFI implementations, with v 1.3 covering Addresses 10h - 50h and v 1.4 beyond Address 50h.

View the PDF document for more information.





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