17
P/N:PM1086
MX29LV017B
REV. 1.1, DEC. 07, 2004
eration, it specifies that a particular sector is bad and it
may not be reused. However, other sectors are still func-
tional and may be used for the program or erase opera-
tion. The device must be reset to use other sectors.
Write the Reset command sequence to the device, and
then execute program or erase command sequence. This
allows the system to continue to use the other active
sectors in the device.
If this time-out condition occurs during the chip erase
operation, it specifies that the entire chip is bad or com-
bination of sectors are bad.
Status
Q7
Q6
Q5
Q3
Q2
RY/BY#
(Note1)
(Note 2)
Byte Program in Auto Program Algorithm
Q7#
Toggle
0
N/A
No
0
Toggle
Auto Erase Algorithm
0
Toggle
0
1
Toggle
0
Erase Suspend Read
(Erase Suspended Sector)
1
No
0
N/A Toggle
1
Toggle
In Progress
Erase Suspended Mode
Erase Suspend Read
(Non-Erase Suspended Sector)
Data
Data
Data
Data
Data
1
Erase Suspend Program
Q7#
Toggle
0
N/A
N/A
0
Byte Program in Auto Program Algorithm
Q7#
Toggle
1
N/A
No
0
Toggle
Exceeded
Time Limits Auto Erase Algorithm
0
Toggle
1
1
Toggle
0
Erase Suspend Program
Q7#
Toggle
1
N/A
N/A
0
Table 7. WRITE OPERATION STATUS
Notes:
1. Q7 and Q2 require a valid address when reading status information. Refer to the appropriate subsection for further details.
2. Q5 switches to '1' when an Auto Program or Auto Erase operation has exceeded the maximum timing limits.
See "Q5:Exceeded Timing Limits " for more information.
If this time-out condition occurs during the byte program-
ming operation, it specifies that the entire sector con-
taining that byte is bad and this sector may not be re-
used, (other sectors are still functional and can be re-
used).
The time-out condition will not appear if a user tries to
program a non blank location without erasing. Please
note that this is not a device failure condition since the
device was incorrectly used.