19
P/N:PM0960
REV. 1.1,OCT. 18, 2004
MX26F128J3
High Z
Definition
Symbol When
Status
Notes
Busy?
"1"
"0"
SR.7
No
WRITE STATE MACHINE STATUS
Ready
Busy
1
SR.6
Yes
RESERVED
SR.5
Yes
ERASE AND CLEAR LOCK-BITS
Error in Block Erasure or
Successful Block
2
STATUS
Clear Lock-Bits
Erase or Clear
Lock-Bits
SR.4
Yes
PROGRAM AND SET LOCK-BIT
Error in Setting Lock-Bit
Successful Set Block
STATUS
Lock Bit
SR.3
Yes
PROGRAMMING VOLTAGE
Low Programming Voltage Programming Voltage
3
STATUS
Detected, Operation
OK
Aborted
SR.2
Yes
RESERVED
SR.1
Yes
DEVICE PROTECT STATUS
Block Lock-Bit Detected,
Unlock
4
Operation Abort
SR.0
Yes
RESERVED
5
Table 15. Status Register Definitions
Notes
1. Check STS or SR.7 to determine block erase, program, or lock-bit configuration completion. SR.6-SR.0 are not
driven while SR.7 = 0
2. If both SR.5 and SR.4 are "1" after a block erase or lock-bit configuration attempt, an improper command se-
quence was entered.
3. 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 com-
mand sequences.
4. 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, depend-
ing 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.
5. SR.0 is reserved for future use and should be masked when polling the status register.
High Z
Definition
Symbol When
Status
Notes
Busy?
"1"
"0"
XSR.7
No
WRITE BUFFER STATUS
Write buffer available
Write buffer not available
1
XSR.6-
Yes
RESERVED
2
XSR.0
Table 16 . Extended Status Register Definitions
Notes:
1. After a Buffer-Write command, XSR.7 = 1 indicates that a Write Buffer is available.
2. XSR.6-XSR.0 are reserved for future use and should be masked when polling the status register.
