S29GL01GS10DFIV13 datasheet(32/108 Pages) CYPRESS

32 / 108 page

Document Number: 001-98285 Rev. *R

Page 32 of 108

S29GL01GS/S29GL512S

S29GL256S/S29GL128S

5.4.6.4

Lock Register ASO

The system can access the Lock Register by issuing the Lock Register entry command sequence during Read Mode. This entry

command does not use a sector address from the entry command. The Lock Register appears at word location 0 in the device

address space. All other locations in the device address space are undefined.

The Lock Register ASO allows the following activities:



Read Lock Register, using device address location 0.



Program the customer Lock Register using a modified Word Programming command.



ASO Exit using legacy Command Set Exit command for backward software compatibility.



ASO Exit using the common exit command for all ASO - alternative for a consistent exit method.

5.4.6.5

Password ASO

The system can access the Password ASO by issuing the Password entry command sequence during Read Mode. This entry

command does not use a sector address from the entry command. The Password appears at word locations 0 to 3 in the device

address space. All other locations in the device address space are undefined.

The Password ASO allows the following activities:



Read Password, using device address location 0 to 3.



Program the Password using a modified Word Programming command.



Unlock the PPB Lock bit with the Password Unlock command.



ASO Exit using legacy Command Set Exit command for backward software compatibility.



ASO Exit using the common exit command for all ASO - alternative for a consistent exit method.

5.4.6.6

PPB ASO

The system can access the PPB ASO by issuing the PPB entry command sequence during Read Mode. This entry command does

not use a sector address from the entry command. The PPB bit for a sector appears in bit 0 of all word locations in the sector.

The PPB ASO allows the following activities:



Read PPB protection status of a sector in bit 0 of any word in the sector.



Program the PPB bit using a modified Word Programming command.



Erase all PPB bits with the PPB erase command.



ASO Exit using legacy Command Set Exit command for backward software compatibility.



ASO Exit using the common exit command for all ASO - alternative for a consistent exit method.

5.4.6.7

PPB Lock ASO

The system can access the PPB Lock ASO by issuing the PPB Lock entry command sequence during Read Mode. This entry

command does not use a sector address from the entry command. The global PPB Lock bit appears in bit 0 of all word locations in

the device.

The PPB Lock ASO allows the following activities:



Read PPB Lock protection status in bit 0 of any word in the device address space.



Set the PPB Lock bit using a modified Word Programming command.



ASO Exit using legacy Command Set Exit command for backward software compatibility.



ASO Exit using the common exit command for all ASO - alternative for a consistent exit method.

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