M29W800DB70M1E View Datasheet(PDF) - Numonyx -> Micron

Part Name

Description

Manufacturer

M29W800DB70M1E

8-Mbit (1 Mbit x 8 or 512 Kbits x 16, boot block) 3 V supply flash memory

Numonyx -> Micron 

M29W800DT, M29W800DB

Status register

Table 7. Status register bits(1)

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

–

–

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

1

No toggle

0

1

Toggle

0

1. Unspecified data bits should be ignored.

Figure 7. Data polling 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

AI03598

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