LE28C1001M datasheet(3/14 Pages) SANYO

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Function Logic

Software Data Protection Command

Note: Address format A14 to A0 (hex.)

Software Chip Erase Command (5 V single-voltage power supply)

Note: Address format A14 to A0 (hex.)

Software Product ID Entry Command and Exit Command Codes

Notes on software Product ID Command Code:

1. Command Code Address format: A14 to A0 (hex.)

2. With A14 to A1 = VIL,

Manufacturer Code is read with A0 = VIL to be BFH

LE28C1001M, T series Device Code is read with A0 = VIH to be 07H

3. The device does not remain in Software Product ID Mode if powered down.

4. A16 and A15 are VIH or VIL.

No. 5129-3/14

LE28C1001M, T-90/12/15

Mode

A16 to A0

DQ7 to DQ0

Read

VIL

VIH

AIN

DOUT

Write

VIL

VIH

VIL

AIN

DIN

Standby

VIH

High-Z

Write inhibit

VIL

High-Z/DOUT

VIH

High-Z/DOUT

Software chip erase (5 V, single voltage)

VIL

VIH

VIL

AIN

DIN

A16 to A10 = VIL, A8 to A1 = VIL,

Manufacturer code (BF)

A9 = 12 V, A0 = VIL

Product identification

VIL

VIH

A16 to A10 = VIL, A8 to A1 = VIL,

Device code (07)

A9 = 12 V, A0 = VIH

Byte sequence

Set protection

Reset protection

Address

Data

Address

Data

Write 0

5555

Write 1

2AAA

Write 2

5555

Write 3

5555

Write 4

2AAA

Write 5

5555

Byte sequence

Protect ID Entry

Protect ID Exit

Address

Data

Address

Data

Write 0

5555

Write 1

2AAA

Write 2

5555

Write 3

5555

Write 4

2AAA

Write 5

5555

Byte sequence

Address

Data

Write 0

5555

Write 1

2AAA

Write 2

5555

Write 3

5555

Write 4

2AAA

Write 5

5555

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