256-Mbit J3 (x8/x16)
Table 18. Status Register Definitions
WSMS
bit 7
ESS
bit 6
ECLBS
bit 5
PSLBS
bit 4
VPENS
bit 3
PSS
bit2
DPS
bit 1
R
bit 0
High Z
When
Busy?
Status Register Bits
Notes
SR.7 = WRITE STATE MACHINE STATUS
Check STS or SR.7 to determine block erase,
program, or lock-bit configuration completion.
SR[6:0] are not driven while SR.7 = “0.”
No
1 = Ready
0 = Busy
Yes
SR.6 = ERASE SUSPEND STATUS
1 = Block Erase Suspended
0 = Block Erase in Progress/Completed
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.5 = ERASE AND CLEAR LOCK-BITSSTATUS
1 = Error in Block Erasure or Clear Lock-Bits
0 = Successful Block Erase or Clear Lock-Bits
Yes
Yes
Yes
SR.4 = PROGRAM AND SET LOCK-BIT STATUS
1 = Program Error / Error in Setting Lock-Bit
0 = Successful Program/Set Block Lock Bit
SR.3 does not provide a continuous programming
voltage level indication. The WSM interrogates and
indicates the programming voltage level only after
Block Erase, Program, Set Block Lock-Bit, or Clear
Block Lock-Bits command sequences.
SR.3 = PROGRAMMING VOLTAGE STATUS
1 = Low Programming Voltage Detected, Operation
Aborted
0 = Programming Voltage OK
Yes
Yes
SR.2 = PROGRAM SUSPEND STATUS
1 = Program suspended
0 = Program in progress/completed
SR.1 does not provide a continuous indication of
block lock-bit values. The WSM interrogates the
block lock-bits only after Block Erase, Program, or
Lock-Bit configuration command sequences. It
informs the system, depending on the attempted
operation, if the block lock-bit is set. Read the block
lock configuration codes using the Read Identifier
Codes command to determine block lock-bit status.
SR.1 = DEVICE PROTECT STATUS
1 = Block Lock-Bit Detected, Operation Abort
0 = Unlock
SR0 is reserved for future use and should be
masked when polling the Status Register.
Yes
SR0 = RESERVED FOR FUTURE ENHANCEMENTS
Table 19. Extended Status Register Definitions
WBS
bit 7
Reserved
Bits 6 -- 0
High Z
When
Busy?
Status Register Bits
Notes
After a Buffer-Write command, XSR.7 = 1 indicates
that a Write Buffer is available.
XSR.7 = WRITE BUFFER STATUS
1 = Write buffer available
No
0 = Write buffer not available
SR[6:0] are reserved for future use and should be
masked when polling the Status Register.
Yes
XSR.6–XSR0 = RESERVED FOR FUTURE
ENHANCEMENTS
40
Datasheet
INTEL [ INTEL ]
