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LHF00L28
Table 8. Status Register Definition
13
R
15
WSMS
7
R
14
BESS
6
R
13
BEFCES
5
R
12
POPS
4
R
11
WPACCS
3
R
10
PSS
2
R
9
DPS
1
R
8
R
0
SR.15 - SR.8 = RESERVED FOR FUTURE
ENHANCEMENTS (R)
SR.7 = WRITE STATE MACHINE STATUS (WSMS)
1 = Ready
0 = Busy
SR.6 = BLOCK ERASE SUSPEND STATUS (BESS)
1 = Block Erase Suspended
0 = Block Erase in Progress/Completed
SR.5 = BLOCK ERASE AND FULL CHIP ERASE
STATUS (BEFCES)
1 = Error in Block Erase or Full Chip Erase
NOTES:
Status Register indicates the status of the WSM (Write State
Machine).
Check SR.7 or RY/BY# to determine block erase, full chip
erase, program or OTP program completion. SR.6 - SR.1 are
invalid while SR.7="0".
If both SR.5 and SR.4 are "1"s after a block erase, full chip
erase, program, set/clear block lock bit, set block lock-down
bit attempt, an improper command sequence was entered.
0 = Successful Block Erase or Full Chip Erase
SR.3 does not provide a continuous indication of WP#/ACC
SR.4 = PROGRAM AND
OTP PROGRAM STATUS (POPS)
1 = Error in Program or OTP Program
0 = Successful Program or OTP Program
SR.3 = WP#/ACC STATUS (WPACCS)
1 = V CC +0.4V < WP#/ACC < 11.7V Detect,
Operation Abort
0 = WP#/ACC OK
level. The WSM interrogates and indicates the WP#/ACC
level only after Block Erase, Full Chip Erase, Program or
OTP Program command sequences. SR.3 is not guaranteed to
report accurate feedback when WP#/ACC ≠ V ACCH .
SR.1 does not provide a continuous indication of block lock
bit. The WSM interrogates the block lock bit only after Block
Erase, Full Chip Erase, Program or OTP Program command
sequences. It informs the system, depending on the attempted
operation, if the block lock bit is set. Reading the block lock
configuration codes after writing the Read Identifier Codes/
OTP command indicates block lock bit status.
SR.2 = PROGRAM SUSPEND
STATUS (PSS)
1 = Program Suspended
0 = Program in Progress/Completed
SR.15 - SR.8 and SR.0 are reserved for future use and should
be masked out when polling the status register.
SR.1 = DEVICE PROTECT STATUS (DPS)
1 = Erase or Program Attempted on a
Locked Block, Operation Abort
0 = Unlocked
SR.0 = RESERVED FOR FUTURE ENHANCEMENTS
(R)
Rev. 2.45
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