LH28F800SU Просмотр технического описания (PDF) - Sharp Electronics

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LH28F800SU

8M (512K × 16, 1M × 8) Flash Memory

Sharp Electronics 

8M (512K × 16, 1M × 8) Flash Memory

GLOBAL STATUS REGISTER

WSMS

7

OSS

6

DOS

5

DSS

4

GSR.7 = WRITE STATE MACHINE STATUS (WSMS)

1 = Ready

0 = Busy

GSR.6 = OPERATION SUSPEND STATUS (OSS)

1 = Operation Suspended

0 = Operation in Progress/Completed

GSR.5 = DEVICE OPERATION STATUS (DOS)

1 = Operation Unsuccessful

0 = Operation Successful or Currently Running

GSR.4 = DEVICE SLEEP STATUS(DSS)

1 = Device in Sleep

0 = Device Not in Sleep

MATRIX 5/4

00 = Operation Successful or Currently Running

01 = Device in Sleep Mode or Pending Sleep

10 = Operation Unsuccessful

11 = Operation Unsuccessful or Aborted

GSR.3 = QUEUE STATUS (QS)

1 = Queue Full

0 = Queue Available

GSR.2 = PAGE BUFFER AVAILABLE STATUS (PBAS)

1 = One or Two Page Buffers Available

0 = No Page Buffer Available

GSR.1 = PAGE BUFFER STATUS (PBS)

1 = Selected Page Buffer Ready

0 = Selected Page Buffer Busy

GSR.0 = PAGE BUFFER SELECT STATUS (PBSS)

1 = Page Buffer 1 Selected

0 = Page Buffer 0 Selected

LH28F800SU

QS

PBAS

PBS

PBSS

3

2

1

0

NOTES:

1. RY »/BY » output or WSMS bit must be checked to determine

completion of an operation (Block Lock, Suspend, any

RY »/BY » reconfiguration, Upload Status Bits, Erase or Data

Write) before the appropriate Status bit (OSS or DOS) is

checked for success.

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

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

4. Operation aborted: Unsucccessful due to Abort command.

5. The device contains two Page Buffers.

6. Selected Page Buffer is currently busy with WSM operation.

7. When multiple operations are queued, checking BSR.7

only provides indication of completion for that particular

block. GSR.7 provides indication when all queued opera-

tions are completed.

13

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