M29W320E ST Microelectronics, M29W320E Datasheet - Page 20

• Manufacturer Part Number: M29W320E
• Description: 32 Mbit (4Mb x8 or 2Mb x16 / Boot Block) 3V Supply Flash Memory
• Manufacturer: ST Microelectronics

M29W320ET, M29W320EB
Table 7. Status Register Bits
Note: Unspecified data bits should be ignored.
Figure 7. Data Polling Flowchart
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Program
Program During Erase
Suspend
Program Error
Chip Erase
Block Erase before
timeout
Block Erase
Erase Suspend
Erase Error
Operation
at VALID ADDRESS
at VALID ADDRESS
NO
READ DQ5 & DQ7
READ DQ7
START
DATA
DATA
DQ7
DQ5
DQ7
FAIL
= 1
=
=
YES
Faulty Block Address
NO
NO
Good Block Address
Non-Erasing Block
Non-Erasing Block
Non-Erasing Block
Erasing Block
Erasing Block
Erasing Block
Any Address
Any Address
Any Address
Any Address
YES
YES
Address
PASS
AI90194
DQ7
DQ7
DQ7
DQ7
0
0
0
0
0
1
0
0
Figure 8. Toggle Flowchart
Note: BA = Address of Block being Programmed or Erased.
No Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
DQ6
Data read as normal
DQ5
NO
0
0
1
0
0
0
0
0
0
1
1
ADDRESS = BA
ADDRESS = BA
ADDRESS = BA
DQ5 & DQ6
READ DQ6
READ DQ6
TOGGLE
TOGGLE
START
TWICE
READ
DQ6
DQ5
DQ6
FAIL
= 1
=
=
DQ3
YES
YES
YES
–
–
–
1
0
0
1
1
–
1
1
No Toggle
No Toggle
No Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
DQ2
–
–
–
NO
NO
PASS
AI08929b
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
RB
0
0
0
0
0
0
0