R
MX29LV160BT/BB
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.
ceeded the specified limits (internal pulse count). Under
these conditions Q5 will produce a "1". This time-out
condition indicates that the program or erase cycle was
not successfully completed. Data Polling andToggle Bit
are the only operating functions of the device under this
condition.
If this time-out condition occurs during the byte/word
programming operation, it specifies that the entire sec-
tor containing that byte/word is bad and this sector may
not be reused, (other sectors are still functional and can
be reused).
If this time-out condition occurs during sector erase op-
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.
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.
Table 8. WRITE OPERATION STATUS
Status
Q7
Q6
Q5
Q3
Q2 RY/BY
(Note1)
(Note2)
Byte/Word Program in Auto Program Algorithm
Auto Erase Algorithm
Q7
Toggle
Toggle
0
N/A
1
No
0
Toggle
0
1
0
0
Toggle
0
1
Erase Suspend Read
(Erase Suspended Sector)
No
Toggle
N/A Toggle
In Progress
Erase Suspended Mode
Erase Suspend Read
Data
Q7
Data Data Data Data
1
0
0
(Non-Erase Suspended Sector)
Erase Suspend Program
Toggle
Toggle
0
1
N/A N/A
Byte/Word Program in Auto Program Algorithm
Q7
N/A
1
No
Toggle
Exceeded
Time Limits Auto Erase Algorithm
0
Toggle
Toggle
1
1
Toggle
0
0
Erase Suspend Program
Q7
N/A N/A
Note:
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.
P/N:PM1041
REV. 1.2, JUL. 01, 2004
18
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