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M29W640DT90N6(2004) データシートの表示(PDF) - STMicroelectronics
部品番号
コンポーネント説明
メーカー
M29W640DT90N6
(Rev.:2004)
64 Mbit (8Mb x8 or 4Mb x16, Boot Block) 3V Supply Flash Memory
STMicroelectronics
M29W640DT90N6 Datasheet PDF : 49 Pages
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M29W640DT, M29W640DB
Table 7. 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
Toggle
0
Non-Erasing Block
0
Toggle
0
0
Toggle
0
0
No Toggle
0
Block Erase
Erasing Block
0
Toggle
0
Non-Erasing Block
0
Toggle
0
1
Toggle
Hi-Z
1
No Toggle
0
Erase Suspend
Erasing Block
Non-Erasing Block
1
No Toggle
0
–
Data read as normal
Toggle
Hi-Z
Hi-Z
Erase Error
Good Block Address
0
Toggle
1
Faulty Block Address
0
Toggle
1
Note: Unspecified data bits should be ignored.
1
No Toggle
0
1
Toggle
0
Figure 5. Data Polling Flowchart
Figure 6. Data Toggle 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
START
READ DQ6
READ
DQ5 & DQ6
DQ= 6
NO
TOGGLE
YES
NO
DQ5
=1
YES
READ DQ6
TWICE
DQ= 6
NO
TOGGLE
YES
FAIL
PASS
AI90195B
18/49
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