EN29LV040A_11 Datasheet, PDF (14/33 Pages) Eon Silicon Solution Inc. – 4 Megabit (512K x 8-bit ) Uniform Sector, CMOS 3.0 Volt-only Flash Memory

Write Operation Status
EN29LV040A
Operation
Standard
Mode
Erase
Suspend
Mode
Embedded Program
Algorithm
Embedded Erase Algorithm
Reading within Erase
Suspended Sector
Reading within Non-Erase
Suspended Sector
Erase-Suspend Program
DQ7
DQ7#
0
1
Data
DQ7#
DQ6
Toggle
Toggle
No
Toggle
Data
Toggle
DQ5
0
0
0
Data
0
DQ3
N/A
1
N/A
Data
N/A
DQ2
No
toggle
Toggle
Toggle
Data
N/A
Table 6. Status Register Bits
DQ
Name
Logic Level
Definition
‘1’
Erase Complete or
erase Sector in Erase suspend
‘0’
Erase On-Going
7
DATA
Program Complete or
POLLING
DQ7
data of non-erase Sector during Erase
Suspend
DQ7
Program On-Going
‘-1-0-1-0-1-0-1-’
Erase or Program On-going
6
TOGGLE
BIT
DQ6
Read during Erase Suspend
‘-1-1-1-1-1-1-1-‘
Erase Complete
‘1’
5
TIME OUT BIT
‘0’
Program or Erase Error
Program or Erase On-going
3
ERASE
TIME OUT BIT
‘1’
‘0’
Erase operation start
Erase timeout period on-going
Chip Erase, Erase or Erase suspend on
currently addressed
‘-1-0-1-0-1-0-1-’ Sector. (When DQ5=1, Erase Error due to
2
TOGGLE
BIT
currently addressed Sector. Program during
Erase Suspend on-going at current address
DQ2
Erase Suspend read on
non Erase Suspend Sector
Notes:
DQ7 DATA Polling: indicates the P/E C 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 Time Out 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
14
or modifications due to changes in technical specifications.
© 2003 Eon Silicon Solution, Inc.,
Rev. E, Issue Date: 2011/10/27
www.eonssi.com