M29W008AB データシートの表示（PDF） - STMicroelectronics

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M29W008AB

8 Mbit (1Mb x8, Boot Block) Low Voltage Single Supply Flash Memory

STMicroelectronics 

M29W008AT, M29W008AB

Table 5. User Bus Operations (1)

Operation

E

G

W

RP A0 A1 A6 A9 A12 A15 DQ0-DQ7

Read Byte

VIL

VIL

VIH

VIH

A0

A1

A6

A9 A12 A15 Data Output

Write Byte

VIL

VIH

VIL

VIH

A0

A1

A6

A9 A12 A15 Data Input

Output Disable VIL VIH

VIH

VIH

X

X

X

X

X

X

Hi-Z

Stand-by

VIH

X

X

VIH

X

X

X

X

X

X

Hi-Z

Reset

X

X

X

VIL

X

X

X

X

X

X

Hi-Z

Block

Protection (2,4)

VIL

VID VIL Pulse VIH

X

X

X

VID

X

X

X

Blocks

Unprotection (4)

VID

VID VIL Pulse VIH

X

X

X

VID

VIH

VIH

X

Block

Protection

Verify (2,4)

Block

VIL

VIL

VIH

VIH

VIL

VIH

VIL

VID A12 A15

Protect

Status(3)

Block

Block

Unprotection

VIL

VIL

VIH

VIH

VIL

VIH

VIH

VID A12 A15

Protect

Verify (2,4)

Status(3)

Block

Temporary

X

X

X

VID

X

X

X

X

X

X

X

Unprotection

Note: 1. X = VIL or VIH.

2. Block Address must be given an A13-A19 bits.

3. See Table 7.

4. Operation performed on programming equipment.

Table 6. Read Electronic Signature (following AS instruction or with A9 = VID)

Code

Device

E

G

W

A0

A1

Other

Addresses

Manufact. Code

VIL

VIL

VIH

VIL

VIL

Don’t Care

DQ0-DQ7

20h

Table 7. Read Block Protection with AS Instruction

Code

E

G

W

A0

A1

Protected Block

Unprotected Block

VIL

VIL

VIH

VIL

VIH

VIL

VIL

VIH

VIL

VIH

A13-A19

Block Address

Block Address

Other

Addresses

Don’t Care

Don’t Care

DQ0-DQ7

01h

00h

7/30

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