AT52BR1674T View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT52BR1674T

16-megabit Flash and 2-megabit/ 4-megabit SRAM Stack Memory

Atmel Corporation 

AT52BR1672(T)/1674(T)

Software Product Identification Entry(1)

LOAD DATA AA

TO

ADDRESS 555

Sector Lockdown Enable Algorithm(1)

LOAD DATA AA

TO

ADDRESS 555

LOAD DATA 55

TO

ADDRESS AAA

LOAD DATA 55

TO

ADDRESS AAA

LOAD DATA 90

TO

ADDRESS 555

LOAD DATA 80

TO

ADDRESS 555

ENTER PRODUCT

IDENTIFICATION

MODE(2)(3)(5)

LOAD DATA AA

TO

ADDRESS 555

Software Product Identification Exit(1)(6)

LOAD DATA AA

OR

TO

ADDRESS 555

LOAD DATA F0

TO

ANY ADDRESS

LOAD DATA 55

TO

ADDRESS AAA

EXIT PRODUCT

IDENTIFICATION

MODE(4)

LOAD DATA F0

TO

ADDRESS 555

Notes:

EXIT PRODUCT

IDENTIFICATION

MODE(4)

1. Data Format: I/O15 - I/O8 (Don’t Care); I/O7 - I/O0 (Hex)

Address Format: A11 - A0 (Hex) and A11 - A19 (Don’t Care).

2. A1 - A19 = VIL. Manufacturer Code is read for A0 = VIL;

Device Code is read for A0 = VIH.

Additional Device Code is read for address 0003H

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: 00C2H (Top Boot); 00C0H (Bottom Boot).

Additional Device Code: 00C8H.

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

LOAD DATA 55

TO

ADDRESS AAA

LOAD DATA 60

TO

SECTOR ADDRESS

PAUSE 200 µs(2)

Notes:

1. Data Format: I/O15 - I/O8 (Don’t Care); I/O7 - I/O0 (Hex)

Address Format: A11 - A0 (Hex) and A11 - A19 (Don’t

Care).

2. Sector Lockdown feature enabled.

21

2604B–STKD–09/02

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