M29DW323DB90N1 データシートの表示（PDF） - STMicroelectronics

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M29DW323DB90N1

32 Mbit (4Mb x8 or 2Mb x16, Dual Bank 8:24, Boot Block) 3V Supply Flash Memory

STMicroelectronics 

M29DW323DT, M29DW323DB

Table 8. Status Register Bits

Operation

Address

DQ7

DQ6

DQ5

DQ3

DQ2

RB

Program

Bank Address

DQ7

Toggle

0

–

–

0

Program During Erase

Suspend

Bank Address

DQ7

Toggle

0

–

–

0

Program Error

Bank Address

DQ7

Toggle

1

–

–

0

Chip Erase

Any Address

0

Toggle

0

1

Toggle

0

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

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

Faulty Block Address

0

Toggle

1

Note: Unspecified data bits should be ignored.

1

No Toggle

0

1

Toggle

0

Figure 8. Data Polling Flowchart

Figure 9. 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

21/49

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