MBM29DL161TE-70TN Meet Spansion Inc., MBM29DL161TE-70TN Datasheet - Page 41

• Manufacturer Part Number: MBM29DL161TE-70TN
• Description: Flash Memory Cmos 16m 2m ? 8/1m ? 16 Bit Dual Operation
• Manufacturer: Meet Spansion Inc.

*1 : Successive reads from the erasing or erase-suspend sector cause DQ
*2 : Reading from non-erase suspend sector address indicates logic “1” at the DQ
Data Polling
In Progress
Exceeded
Time Limits
• DQ
The MBM29DL16XTE/BE devices feature Data Polling as a method to indicate to the host that the Embedded
Algorithms are in progress or completed. During the Embedded Program Algorithm an attempt to read the
devices will produce the complement of the data last written to DQ
Algorithm, an attempt to read the device will produce the true data last written to DQ
Erase Algorithm, an attempt to read the device will produce a “0” at the DQ
Embedded Erase Algorithm an attempt to read the device will produce a “1” at the DQ
for Data Polling (DQ
For programming, the Data Polling is valid after the rising edge of fourth write pulse in the four write pulse
sequence.
For chip erase and sector erase, the Data Polling is valid after the rising edge of the sixth write pulse in the six
write pulse sequence. Data Polling must be performed at sector address within any of the sectors being erased
and not a protected sector. Otherwise, the status may not be valid.
If a program address falls within a protected sector, Data Polling on DQ
that bank returns to the read mode. After an erase command sequence is written, if all sectors selected for
erasing are protected, Data Polling on DQ
Once the Embedded Algorithm operation is close to being completed, the MBM29DL16XTE/BE data pins (DQ
may change asynchronously while the output enable (OE) is asserted low. This means that the devices are
7
Embedded Program Algorithm
Embedded Erase Algorithm
Erase
Suspended
Mode
Program
Suspended
Mode
Embedded Program Algorithm
Embedded Erase Algorithm
Erase
Suspended
Mode
7
) is shown in “(3) Data Polling Algorithm” in ■FLOW CHART.
Erase Suspend Read
(Erase Suspended Sector)
Erase Suspend Read
(Non-Erase Suspended Sector)
Erase Suspend Program
(Non-Erase Suspended Sector)
Program Suspend Read
(Program Suspended Sector)
Program Suspend Read
(Non-Program Suspended Sector)
Erase Suspend Program
(Non-Erase Suspended Sector)
Status
Hardware Sequence Flags Table
Retired Product DS05-20880-5E_July 13, 2007
7
is active for approximately 400 μs, then the bank returns to read mode.
MBM29DL16XTE/BE
7
. Upon completion of the Embedded Program
7
2
Data
Data
Data
DQ
DQ
DQ
DQ
DQ
is active for approximately 1 μs, then
to toggle.
0
1
0
7
7
7
7
7
7
output. Upon completion of the
2
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
bit.
Data
Data
Data
DQ
1
6
7
. During the Embedded
7
output. The flowchart
Data Data
Data Data
Data Data
DQ
0
0
0
0
1
1
1
5
DQ
0
1
0
0
0
1
0
3
70/90
Toggle*
Toggle
Data
Data
Data
DQ
N/A
N/A
1 *
1
1
2
2
7
1
)
41