AT29LV020 Просмотр технического описания (PDF) - Atmel Corporation

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Компоненты Описание

производитель

AT29LV020

2-megabit (256K x 8) 3-volt Only Flash Memory

Atmel Corporation 

23. Software Product Identification

Entry(1)

LOAD DATA AA

TO

ADDRESS 5555

25. Boot Block Lockout

Feature Enable Algorithm(1)

LOAD DATA AA

TO

ADDRESS 5555

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA 90

TO

ADDRESS 5555

LOAD DATA 80

TO

ADDRESS 5555

PAUSE 20 mS

ENTER PRODUCT

IDENTIFICATION

MODE(2)(3)(5)

24. Software Product Identification

Exit(1)

LOAD DATA AA

TO

ADDRESS 5555

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA F0

TO

ADDRESS 5555

PAUSE 20 mS

EXIT PRODUCT

IDENTIFICATION

MODE(4)

Notes:

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

Address Format: A14 - A0 (Hex).

2. A1 - A17 = 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 is 1F. The Device Code is BA.

LOAD DATA AA

TO

ADDRESS 5555

LOAD DATA 55

TO

ADDRESS 2AAA

LOAD DATA 40

TO

ADDRESS 5555

LOAD DATA 00

TO

ADDRESS 00000H(2)

LOAD DATA FF

TO

ADDRESS 3FFFFH(3)

PAUSE 20 mS

PAUSE 20 mS

Notes:

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

Address Format: A14 - A0 (Hex).

2. Lockout feature set on lower address boot block.

3. Lockout feature set on higher address boot block.

12 AT29LV020

0565E–FLASH–9/08

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