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M29W640FT Datasheet(PDF) 32 Page - STMicroelectronics

Part # M29W640FT
Description  64 Mbit (8Mb x8 or 4Mb x16, Page, Boot Block) 3V Supply Flash Memory
PDF  72 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M29W640FT Datasheet(HTML) 32 Page - STMicroelectronics

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5 Status Register
M29W640FT, M29W640FB
32/72
Table 8.
Status Register Bits
1.
Unspecified data bits should be ignored.
Figure 4.
Data Polling Flowchart
Operation
Address
DQ7
DQ6
DQ5
DQ3
DQ2
RB
Program
Any Address
DQ7
Toggle0
––
0
Program During Erase
Suspend
Any Address
DQ7
Toggle0
––
0
Program Error
Any Address
DQ7
Toggle1
––
Hi-Z
Chip Erase
Any Address
0
Toggle
0
1
Toggle
Hi-Z
Block Erase before
timeout
Erasing Block
0
Toggle
0
0
Toggle0
Non-Erasing Block
0
Toggle
0
0
No Toggle0
Block Erase
Erasing Block
0
Toggle
0
1
Toggle
Hi-Z
Non-Erasing Block
0
Toggle
0
1
No Toggle0
Erase Suspend
Erasing Block
1
No Toggle0
–
Toggle
Hi-Z
Non-Erasing Block
Data read as normal
Hi-Z
Erase Error
Good Block Address
0
Toggle
1
1
No Toggle0
Faulty Block Address
0
Toggle
1
1
Toggle0
READ DQ5 & DQ7
at VALID ADDRESS
START
READ DQ7
at VALID ADDRESS
FAIL
PASS
AI90194
DQ7
=
DATA
YES
NO
YES
NO
DQ5
= 1
DQ7
=
DATA
YES
NO



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