M29F400BB STMICROELECTRONICS [STMicroelectronics], M29F400BB Datasheet - Page 24

• Manufacturer Part Number: M29F400BB
• Description: 4 Mbit (512Kb x8 or 256Kb x16, Boot Block) single supply Flash memory
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

Status Register
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Table 6.
1. Unspecified data bits should be ignored.
Figure 4.
Program
Program During
Erase Suspend
Program Error
Chip Erase
Block Erase before
timeout
Block Erase
Erase Suspend
Erase Error
Operation
Status Register bits
Data polling flowchart
Faulty Block Address
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
Address
(1)
at VALID ADDRESS
at VALID ADDRESS
NO
READ DQ5 & DQ7
READ DQ7
START
DATA
DATA
DQ7
DQ5
DQ7
FAIL
= 1
DQ7
DQ7
DQ7
DQ7
=
=
0
0
0
0
0
1
0
0
YES
NO
NO
YES
YES
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
DQ6
No
Data read as normal
PASS
DQ5
0
0
1
0
0
0
0
0
0
1
1
AI03598
M29F400BT, M29F400BB
DQ3
–
–
–
1
0
0
1
1
–
1
1
No Toggle
No Toggle
No Toggle
Toggle
Toggle
Toggle
Toggle
Toggle
DQ2
–
–
–
RB
0
0
0
0
0
0
0
0
1
1
0
0