AT49F040-12JC_ Просмотр технического описания (PDF) - Atmel Corporation

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AT49F040-12JC_

4 Megabit (512K x 8) 5-volt Only CMOS Flash Memory

Atmel Corporation 

Software Product

Identification Entry (1)

LOAD DATA AA

TO

ADDRESS 5555

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA 90

TO

ADDRESS 5555

ENTER PRODUCT

IDENTIFICATION

MODE (2, 3, 5)

Software Product

Identification Exit (1)

LOAD DATA AA

OR

TO

ADDRESS 5555

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA F0

TO

ADDRESS 5555

EXIT PRODUCT

IDENTIFICATION

MODE (4)

LOAD DATA F0

TO

ANY ADDRESS

EXIT PRODUCT

IDENTIFICATION

MODE (4)

AT49F040

Boot Block Lockout

Feature Enable Algorithm (1)

LOAD DATA AA

TO

ADDRESS 5555

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA 80

TO

ADDRESS 5555

LOAD DATA AA

TO

ADDRESS 5555

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA 40

TO

ADDRESS 5555

PAUSE 1 second (2)

Notes for boot block lockout feature enable:

1. Data Format: I/O7 - I/O0 (Hex);

Address Format: A14 - A0 (Hex).

2. Boot block lockout feature enabled.

Notes for software product identification:

1. Data Format: I/O7 - I/O0 (Hex);

Address Format: A14 - A0 (Hex).

2. A1 - A18 = VIL.

Manufacture Code is read for A0 = VIL;

Device Code is read for A0 = VIH.

3. The device does not remain in identification mode if

powered down.

4. The device returns to standard operation mode.

5. Manufacturer Code: 1FH

Device Code: 13H

4-217

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