Status Register
M29FxxxFT, M29FxxxFB
Table 10. Status Register Bits
Operation
Program
Address
DQ7
DQ7
DQ6
DQ5
DQ3
DQ2
RB
Any Address
Toggle
0
0
–
–
–
–
–
0
0
Program During
Erase Suspend
Any Address
DQ7
Toggle
Program Error
Chip Erase
Any Address
Any Address
Erasing Block
DQ7
Toggle
Toggle
Toggle
1
0
0
–
1
0
0
0
0
0
0
Toggle
Toggle
Block Erase before
timeout
No
Toggle
Non-Erasing Block
Erasing Block
0
0
0
Toggle
Toggle
Toggle
0
0
0
0
1
1
0
0
0
Toggle
Block Erase
No
Toggle
Non-Erasing Block
No
Toggle
Erasing Block
1
0
–
Toggle
1
1
0
Erase Suspend
Non-Erasing Block Data read as normal
Good Block
No
Toggle
0
Toggle
1
1
1
Address
Erase Error
Faulty Block
Address
0
Toggle
1
Toggle
0
Unspecified data bits should be ignored.
Figure 1. Data Polling Flowchart
START
READ DQ5 & DQ7
at VALID ADDRESS
DQ7
=
DATA
YES
NO
NO
DQ5
= 1
YES
READ DQ7
at VALID ADDRESS
DQ7
=
DATA
YES
NO
FAIL
PASS
AI03598
36/67
NUMONYX [ NUMONYX B.V ]
