Datasheet

SST26VF032B / SST26VF032BA
DS20005218E-page 58  2013-2016 Microchip Technology Inc.
11.0 APPENDIX
TABLE 11-1: SERIAL FLASH DISCOVERABLE PARAMETER (SFDP) (1 OF 16)
Address Bit Address Data Comments
SFDP Header
SFDP Header: 1
st
DWORD
00H A7:A0 53H SFDP Signature
SFDP Signature=50444653H
01H A15:A8 46H
02H A23:A16 44H
03H A31:A24 50H
SFDP Header: 2
nd
DWORD
04H A7:A0 06H SFDP Minor Revision Number
05H A15:A8 01H SFDP Major Revision Number
06H A23:A16 02H Number of Parameter Headers (NPH)=3
07H A31:A24 FFH Unused. Contains FF and can not be changed.
Parameter Headers
JEDEC Flash Parameter Header: 1
st
DWORD
08H A7:A0 00H
Parameter ID Least Significant Bit (LSB) Number.
When this field is set to 00H, it indicates a JEDEC-specified header. For
vendor-specified headers, this field must be set to the vendor’s manufac-
turer ID.
09H A15:A8 06H
Parameter Table Minor Revision Number
Minor revisions are either clarifications or changes that add parameters
in existing Reserved locations. Minor revisions do NOT change overall
structure of SFDP. Minor Revision starts at 00H.
0AH A23:A16 01H
Parameter Table Major Revision Number
Major revisions are changes that reorganize or add parameters to loca-
tions that are NOT currently Reserved. Major revisions would require
code (BIOS/firmware) or hardware change to get previously defined dis-
coverable parameters. Major Revision starts at 01H
0BH A31:A24 10H
Parameter Table Length
Number of DWORDs that are in the Parameter table
JEDEC Flash Parameter Header: 2
nd
DWORD
0CH A7:A0 30H
Parameter Table Pointer (PTP)
A 24-bit address that specifies the start of this header’s Parameter table
in the SFDP structure. The address must be DWORD-aligned.
0DH A15:A8 00H
0EH A23:A16 00H
0FH A31:A24 FFH
Parameter ID Most Significant Bit (MSB) Number
JEDEC Sector Map Parameter Header: 3
rd
DWORD
10H A7:A0 81H
Parameter ID LSB Number.
Sector-Map, Function-Specific table is assigned 81H
11H A15:A8 00H
Parameter Table Minor Revision Number
Minor revisions are either clarifications or changes that add parameters
in existing Reserved locations. Minor revisions do NOT change overall
structure of SFDP. Minor Revision starts at 00H.
12H A23:A16 01H
Parameter Table Major Revision Number
Major revisions are changes that reorganize or add parameters to loca-
tions that are NOT currently Reserved. Major revisions would require
code (BIOS/firmware) or hardware change to get previously defined dis-
coverable parameters. Major Revision starts at 01H