M29W064FT Datasheet, PDF (31/69 Pages) Numonyx B.V – 64 Mbit (8 Mbit x 8 or 4 Mbit x 16, page, boot block) 3 V supply Flash memory

M29W064FT, M29W064FB
Status register
Table 9. Status register bits⁽¹⁾
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
Chip erase
Block erase before
timeout
Block erase
Erase suspend
Erase error
Any address
DQ7 Toggle
1
–
–
Hi-Z
Any address
0 Toggle
0
1
Toggle
0
Erasing block
0 Toggle
0
0
Toggle
0
Non-erasing block 0 Toggle
0
0 No Toggle 0
Erasing block
0 Toggle
0
1
Toggle
0
Non-erasing block 0 Toggle
0
1 No Toggle 0
Erasing block
1 No Toggle 0
–
Toggle Hi-Z
Non-erasing block
Data read as normal
Hi-Z
Good block address 0 Toggle
1
1 No Toggle Hi-Z
Faulty block address 0 Toggle
1
1
Toggle Hi-Z
1. Unspecified data bits should be ignored.
Figure 3. 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
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