AT49F2048A-70RC View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT49F2048A-70RC

2-megabit (256K x 8/128K x 16) 5-volt Only CMOS Flash Memory

Atmel Corporation 

Software Product Identification Entry(1)

LOAD DATA AA

TO

ADDRESS 5555

Boot Block Lockout

Enable Algorithm(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)(6)

LOAD DATA AA

OR

TO

ADDRESS 5555

LOAD DATA F0

TO

ANY ADDRESS

LOAD DATA 55

TO

ADDRESS 2AAA

EXIT PRODUCT

IDENTIFICATION

MODE(4)

LOAD DATA F0

TO

ADDRESS 5555

EXIT PRODUCT

IDENTIFICATION

MODE(4)

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

Notes: 1. Data Format: I/O15 - I/O8 (Don’t Care);

I/O7 - I/O0 (Hex)

Address Format: A15 - A0 (Hex); A-1 and A15 - A16

(Don’t Care).

2. Boot Block Lockout feature enabled.

Notes: 1. Data Format: I/O15 - I/O8 (Don’t Care);

I/O7 - I/O0 (Hex)

Address Format: A15 - A0 (Hex);

A-1 and A15 - A16 (Don’t Care).

2. A1 - A16 = VIL.

Manufacturer 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: 001FH

Device Code: 0082H

6. Either one of the Product ID Exit commands can be

used.

10 AT49F2048A

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