8M (512K × 16, 1M × 8) Flash Memory
LH28F800SU
GLOBAL STATUS REGISTER
WSMS
7
OSS
6
DOS
5
DSS
4
QS
3
PBAS
2
PBS
1
PBSS
0
NOTES:
GSR.7 = WRITE STATE MACHINE STATUS (WSMS)
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.
1 = Ready
0 = Busy
GSR.6 = OPERATION SUSPEND STATUS (OSS)
1 = Operation Suspended
2. If operation currently running, then GSR.7 = 0.
3. If device pending sleep, then GSR.7 = 0.
0 = Operation in Progress/Completed
GSR.5 = DEVICE OPERATION STATUS (DOS)
1 = Operation Unsuccessful
4. Operation aborted: Unsucccessful due to Abort command.
5. The device contains two Page Buffers.
0 = Operation Successful or Currently Running
GSR.4 = DEVICE SLEEP STATUS(DSS)
6. Selected Page Buffer is currently busy with WSM operation.
1 = Device in Sleep
0 = Device Not in Sleep
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.
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
13
SHARP [ SHARP ELECTRIONIC COMPONENTS ]
