28F016SA datasheet(19/55 Pages) INTEL

19 / 55 page

28F016SA

4.6

Global Status Register

WSMS

OSS

DOS

DSS

PBAS

PBS

PBSS

765

432

NOTES:

GSR.7 = WRITE STATE MACHINE STATUS

1 = Ready

0 = Busy

[1] RY/BY# output or WSMS bit must be checked

to determine completion of an operation (block

lock, erase suspend, any RY/BY# reconfig-

uration, Upload Status Bits, block erase or data

program) before the appropriate Status bit (OSS

or DOS) is checked for success.

GSR.6 = OPERATION SUSPEND STATUS

1 = Operation Suspended

0 = Operation in Progress/Completed

GSR.5 = DEVICE OPERATION STATUS

1 = Operation Unsuccessful

0 = Operation Successful or Currently

Running

GSR.4 = DEVICE SLEEP STATUS

1 = Device in Sleep

0 = Device Not in Sleep

MATRIX

5/4

0 0 = Operation Successful or Currently

Running

0 1 = Device in Sleep Mode or Pending

Sleep

1 0 = Operation Unsuccessful

1 1 = Operation Unsuccessful or

Aborted

If operation currently running, then GSR.7 = 0.

If device pending sleep, then GSR.7 = 0.

Operation aborted: Unsuccessful due to Abort

command.

GSR.3 = QUEUE STATUS

1 = Queue Full

0 = Queue Available

GSR.2 = PAGE BUFFER AVAILABLE STATUS

1 = One or Two Page Buffers Available

0 = No Page Buffer Available

The device contains two Page Buffers.

GSR.1 = PAGE BUFFER STATUS

1 = Selected Page Buffer Ready

0 = Selected Page Buffer Busy

Selected Page Buffer is currently busy with WSM

operation.

GSR.0 = PAGE BUFFER SELECT STATUS

1 = Page Buffer 1 Selected

0 = Page Buffer 0 Selected

NOTE:

When multiple operations are queued, checking BSR.7 only provides indication of completion for that particular block.

GSR.7 provides indication when all queued operations are completed.

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