m29w400d Numonyx, m29w400d Datasheet - Page 26

• Manufacturer Part Number: m29w400d
• Description: 4 Mbit 512 Kb X 8 Or 256 Kb X 16, Boot Block 3 V Supply Flash Memory
• Manufacturer: Numonyx

Status Register
26/48
Table 7.
1. Unspecified data bits should be ignored.
Figure 7.
Block Erase
before timeout
Block Erase
Erase Suspend
Erase Error
Operation
Status Register bits
Data polling flowchart
Erasing block
Erasing block
Erasing block
Non-erasing
Non-erasing
Non-erasing
Faulty block
Good block
Address
address
address
block
block
block
(1)
at VALID ADDRESS
at VALID ADDRESS
NO
READ DQ5 & DQ7
(continued)
DQ7
0
0
0
0
1
0
0
READ DQ7
START
DATA
DATA
FAIL
DQ7
DQ5
DQ7
= 1
=
=
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
YES
NO
NO
DQ6
No
Data read as normal
YES
YES
DQ5
0
0
0
0
0
1
1
PASS
AI03598
DQ3
0
0
1
1
–
1
1
M29W400DT, M29W400DB
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
DQ2
No
No
No
RB
0
0
0
0
1
1
0
0