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M29W400DT Datasheet(PDF) 26 Page - STMicroelectronics

Part # M29W400DT
Description  4 Mbit (512 Kb x 8 or 256 Kb x 16, boot block) 3 V supply Flash memory
PDF  48 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M29W400DT Datasheet(HTML) 26 Page - STMicroelectronics

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



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