S29PL127J65 datasheet(72/106 Pages) SPANSION

72 / 106 page

S29PL127J/S29PL129J/S29PL064J/S29PL032J

31107A62 April 7, 2005

PRE L IMINA R Y

operation using the DQ7 or DQ6 status bits, just as in the standard Word Program

operation. Refer to the "Write Operation Status" section section for more

information.

In the erase-suspend-read mode, the system can also issue the autoselect com-

mand sequence. The device allows reading autoselect codes even at addresses

within erasing sectors, since the codes are not stored in the memory array. When

the device exits the autoselect mode, the device reverts to the Erase Suspend

mode, and is ready for another valid operation. Refer to the "SecSiTM Sector Ad-

dresses" section and the "Autoselect Command Sequence" section sections for

details.

To resume the sector erase operation, the system must write the Erase Resume

command (address bits are don’t care). The bank address of the erase-sus-

pended bank is required when writing this command. Further writes of the

Resume command are ignored. Another Erase Suspend command can be written

after the chip has resumed erasing.

If the Persistent Sector Protection Mode Locking Bit is verified as programmed

without margin, the Persistent Sector Protection Mode Locking Bit Program Com-

mand should be reissued to improve program margin. If the SecSi Sector

Protection Bit is verified as programmed without margin, the SecSi Sector Pro-

tection Bit Program Command should be reissued to improve program margin.

µµ

After programming a PPB, two additional cycles are needed to determine

whether the PPB has been programmed with margin. If the PPB has been pro-

grammed without margin, the program command should be reissued to improve

the program margin. Also note that the total number of PPB program/erase cycles

is limited to 100 cycles. Cycling the PPBs beyond 100 cycles is not guaranteed.

After erasing the PPBs, two additional cycles are needed to determine whether

the PPB has been erased with margin. If the PPBs has been erased without mar-

gin, the erase command should be reissued to improve the program margin. The

programming of either the PPB or DYB for a given sector or sector group can be

verified by writing a Sector Protection Status command to the device.

Note that there is no single command to independently verify the programming

of a DYB for a given sector group.

S29PL127J65 Datasheet(PDF) 72 Page - SPANSION