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JEDEC

STANDARD

Serial Flash Discoverable Parameters

(SFDP)

JESD216F.01

(Editorial Revision of JESD216F, December 2021)

FEBRUARY 2022

JEDEC SOLID STATE TECHNOLOGY ASSOCIATION

NOTICE

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The information included in JEDEC standards and publications represents a sound approach to product

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Printed in the U.S.A.

JEDEC Standard No. 216F.01

-i-

SERIAL FLASH DISCOVERABLE PARAMETERS (SFDP)

Contents

Page

Foreword ....................................................................................................................................................... x

Introduction ................................................................................................................................................... x

1 Scope ................................................................................................................................................ 1

2 Normative reference......................................................................................................................... 1

3 Terms and definitions ...................................................................................................................... 2

4 Read SFDP Command Protocol ....................................................................................................... 3

4.1 Instruction ........................................................................................................................................ 3

4.2 Address ............................................................................................................................................ 3

4.3 Wait States ....................................................................................................................................... 4

4.4 Clock Rate ........................................................................................................................................ 4

4.5 Command Modes ............................................................................................................................. 4

4.5.1 Read SFDP (1S-1S-1S) Mode ......................................................................................................... 5

4.5.2 Read SFDP (2S-2S-2S) Mode ......................................................................................................... 6

4.5.3 Read SFDP (4S-4S-4S) Mode ......................................................................................................... 6

4.5.4 Read SFDP (4S-4D-4D) Mode ........................................................................................................ 7

4.5.5 Read SFDP (8D-8D-8D) Mode ....................................................................................................... 7

4.5.6 Fetch SFDP (1S-1S-1S) Mode ......................................................................................................... 8

4.5.7 Fetch SFDP (2S-2S-2S) Mode ......................................................................................................... 8

4.5.8 Fetch SFDP (4S-4S-4S and 4S-4D-4D) Mode ................................................................................ 9

4.5.9 Fe

tch SFDP (8D-8D-8D) Mode ....................................................................................................... 9

5 Read SFDP Behavior ..................................................................................................................... 10

5.1 Security .......................................................................................................................................... 10

5.2 Reset and Hold Functions .............................................................................................................. 10

5.3 Read Wrap ..................................................................................................................................... 10

5.4 SFDP Address Boundary Wrap ..................................................................................................... 10

5.5 Reserved SFDP Locations ............................................................................................................. 10

6 SFDP Database .............................................................................................................................. 11

6.1 SFDP Header Structure .................................................................................................................. 11

6.2 SFDP Header ................................................................................................................................. 12

6.2.1 SFDP Header: 1

DWORD............................................................................................................ 12

6.2.2 SFDP Header: 2

DWORD ........................................................................................................... 13