EN29F002A / EN29F002AN
Table 6. Status Register Bits
DQ
Name
Logic Level
Definition
‘1’
Erase Complete or
erase sector in Erase suspend
Erase On-Going
‘0’
Program Complete or
data of non-erase sector
during Erase Suspend
DATA
7
DQ7
POLLING
DQ7
‘-1-0-1-0-1-0-1-’
DQ6
Program On-Going
Erase or Program On-going
Read during Erase Suspend
TOGGLE
BIT
6
5
‘-1-1-1-1-1-1-1-‘
Erase Complete
ERROR BIT
‘1’
‘0’
‘1’
Program or Erase Error
Program or Erase On-going
Erase operation start
ERASE
3
TIME BIT
‘0’
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 currently
addressed sector. Program
during Erase Suspend on-
going at current address
2
TOGGLE
BIT
Erase Suspend read on
DQ2
non Erase Suspend Sector
Notes:
DQ7
Polling: indicates the P/E status check during Program or Erase, and on completion before checking bits DQ5
DATA
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.
©2003 Eon Silicon Solution, Inc., www.essi.com.tw
12
Rev. A, Issue Date: 2003/03/26
EON [ EON SILICON SOLUTION INC. ]
