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LHF08CTE
Table 7. Status Register Definition
16
WSMS
7
ESS
6
ECLBS
5
BWSLBS
4
VPPS
3
BWSS
2
DPS
1
R
0
NOTES:
SR.7 = WRITE STATE MACHINE STATUS
1 = Ready
0 = Busy
SR.6 = ERASE SUSPEND STATUS
1 = Block Erase Suspended
0 = Block Erase in Progress/Completed
SR.5 = ERASE AND CLEAR LOCK-BITS STATUS
1 = Error in Block Erasure or Clear Lock-Bits
0 = Successful Block Erase or Clear Lock-Bits
SR.4 = BYTE WRITE AND SET LOCK-BIT STATUS
1 = Error in Byte Write or Set Master/Block Lock-Bit
0 = Successful Byte Write or Set Master/Block
Lock-Bit
SR.3 = V PP STATUS
1 = V PP Low Detect, Operation Abort
0 = V PP OK
SR.2 = BYTE WRITE SUSPEND STATUS
1 = Byte Write Suspended
0 = Byte Write in Progress/Completed
Check RY/BY# or SR.7 to determine block erase, byte
write, or lock-bit configuration completion.
SR.6-0 are invalid while SR.7="0".
If both SR.5 and SR.4 are "1"s after a block erase or
lock-bit configuration attempt, an improper command
sequence was entered.
SR.3 does not provide a continuous indication of V PP
level. The WSM interrogates and indicates the V PP level
only after Block Erase, Byte Write, Set Block/Master
Lock-Bit, or Clear Block Lock-Bits command sequences.
SR.3 is not guaranteed to reports accurate feedback
only when V PP ≠ V PPH1/2/3 .
SR.1 does not provide a continuous indication of master
and block lock-bit values. The WSM interrogates the
master lock-bit, block lock-bit, and RP# only after Block
Erase, Byte Write, or Lock-Bit configuration command
sequences. It informs the system, depending on the
attempted operation, if the block lock-bit is set, master
lock-bit is set, and/or RP# is not V HH . Reading the block
lock and master lock configuration codes after writing
the Read Identifier Codes command indicates master
and block lock-bit status.
SR.1 = DEVICE PROTECT STATUS
1 = Master Lock-Bit, Block Lock-Bit and/or RP# Lock SR.0 is reserved for future use and should be masked
Detected, Operation Abort
out when polling the status register.
0 = Unlock
SR.0 = RESERVED FOR FUTURE ENHANCEMENTS
Rev. 1.3
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