M29W800AB STMICROELECTRONICS [STMicroelectronics], M29W800AB Datasheet - Page 11

• Manufacturer Part Number: M29W800AB
• Description: 8 Mbit 1Mb x8 or 512Kb x16, Boot Block Low Voltage Single Supply Flash Memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Table 10. Status Register Bits
Note:
DQ
7
6
5
4
3
2
1
0
Logic level ’1’ is High, ’0’ is Low. -0-1-0-0-0-1-1-1-0- represent bit value in successive Read operations.
Data
Polling
Toggle Bit
Error Bit
Reserved
Erase
Time Bit
Toggle Bit
Reserved
Reserved
Name
’-1-0-1-0-1-0-1-’
’-1-1-1-1-1-1-1-’
’-1-0-1-0-1-0-1-’
Logic Level
DQ
DQ
DQ
DQ
’1’
’0’
’1’
’0’
’1’
’0’
1
Erase Complete or erase block
in Erase Suspend
Erase On-going
Program Complete or data of
non erase block during Erase
Suspend
Program On-going
Erase or Program On-going
Program Complete
Erase Complete or Erase
Suspend on currently
addressed block
Program or Erase Error
Program or Erase On-going
Erase Timeout Period Expired
Erase Timeout Period On-going
Chip Erase, Erase or Erase
Suspend on the currently
addressed block.
Erase Error due to the currently
addressed block
(when DQ5 = ‘1’).
Program on-going, Erase on-
going on another block or
Erase Complete
Erase Suspend read on non
Erase Suspend block
Definition
Indicates the P/E.C. status, check during
Program or Erase, and on completion before
checking bits DQ5 for program or Erase
Success.
Successive reads output complementary
data on DQ6 while Programming or Erase
operations are on-going. DQ6 remains at
constant level when P/E.C. operations are
completed or Erase Suspend is
acknowledged.
This bit is set to ‘1’ in the case of
Programming or Erase failure.
P/E.C. Erase operation has started. Only
possible command entry is Erase Suspend
(ES).
An additional block to be erased in parallel
can be entered to the P/E.C.
Indicates the erase status and allows to
identify the erased block
M29W800AT, M29W800AB
Note
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