EN29LV641H/L EN29LV640U
Write Operation Status
Operation
DQ7
DQ6
DQ5 DQ3
DQ2
RY/BY#
Embedded Program
No
toggle
DQ7# Toggle
0
0
0
N/A
1
0
0
1
Standard
Mode
Algorithm
Embedded Erase Algorithm
0
1
Toggle
Toggle
Reading within Erase
Suspended Sector
Reading within Non-Erase
Suspended Sector
No
Toggle
N/A
Toggle
Sector
Erase
Suspend
Mode
Data
Data
Data Data
Data
N/A
1
0
Erase-Suspend Program
DQ7# Toggle
0
N/A
Table 10. Status Register Bits
DQ
Name
Logic Level
Definition
Erase Complete or erased sector in Sector Erase
Suspend
‘1’
‘0’
Erase On-Going
DATA#
POLLING
7
Program Complete or data of non-erased sector
during Sector Erase Suspend
DQ7
DQ7#
Program On-Going
‘-1-0-1-0-1-0-1-’
DQ6
Erase or Program On-going
Read during Sector Erase Suspend
Erase Complete
6
TOGGLE BIT
ERROR BIT
‘-1-1-1-1-1-1-1-‘
‘1’
‘0’
‘1’
‘0’
Program or Erase Error
Program or Erase On-going
Erase operation start
5
3
SECTOR
ERASE TIME
BIT
Erase timeout period on-going
Chip Erase, Sector Erase or Read within Erase-
Suspended sector. (When DQ5=1, Erase Error due
to currently addressed Sector or Program on
Erase-Suspended sector
‘-1-0-1-0-1-0-1-’
DQ2
2
TOGGLE BIT
Read on addresses of non Erase-Suspend sectors
Notes:
DQ7: DATA# Polling: indicates the P/E status check during Program or Erase, and on completion before checking bits DQ5
for Program or Erase Success.
DQ6: Toggle Bit: remains at constant level when P/E operations are complete or erase suspend is acknowledged.
Successive reads output complementary data on DQ6 while programming or Erase operation are on-going.
DQ5: Error Bit: set to “1” if failure in programming or erase
DQ3: Sector Erase Command Timeout Bit: Operation has started. Only possible command is Erase suspend (ES).
DQ2: Toggle Bit: indicates the Erase status and allows identification of the erased Sector.
This Data Sheet may be revised by subsequent versions
or modifications due to changes in technical specifications.
©2005 Eon Silicon Solution, Inc., www.essi.com.tw
23
Rev. B, Issue Date: 2005/06/27
EON [ EON SILICON SOLUTION INC. ]
