M29W640FB Просмотр технического описания (PDF) - STMicroelectronics
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M29W640FB Datasheet PDF : 72 Pages
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5 Status Register
M29W640FT, M29W640FB
Table 8. Status Register Bits
Operation
Address
DQ7
DQ6
DQ5 DQ3
DQ2
RB
Program
Any Address
DQ7
Toggle
0
–
–
0
Program During Erase
Suspend
Any Address
DQ7
Toggle
0
–
–
0
Program Error
Any Address
DQ7
Toggle
1
–
–
Hi-Z
Chip Erase
Any Address
0
Toggle
0
1
Toggle
Hi-Z
Block Erase before
timeout
Erasing Block
0
Non-Erasing Block
0
Toggle
0
Toggle
0
0
Toggle
0
0
No Toggle
0
Block Erase
Erase Suspend
Erasing Block
Non-Erasing Block
Erasing Block
Non-Erasing Block
0
Toggle
0
1
Toggle
Hi-Z
0
Toggle
0
1
No Toggle
0
1
No Toggle
0
–
Toggle
Hi-Z
Data read as normal
Hi-Z
Erase Error
Good Block Address
0
Toggle
1
Faulty Block Address
0
Toggle
1
1
No Toggle
0
1
Toggle
0
1. Unspecified data bits should be ignored.
Figure 4. Data Polling Flowchart
START
READ DQ5 & DQ7
at VALID ADDRESS
DQ7
=
YES
DATA
NO
NO DQ5
=1
YES
READ DQ7
at VALID ADDRESS
DQ7
=
YES
DATA
NO
FAIL
PASS
AI90194
32/72
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