AT49F040B Datasheet, PDF (15/19 Pages) ATMEL Corporation – 4-megabit (512K x 8) 5-volt Only Flash Memory

25. Software Product Identification
Entry⁽¹⁾
LOAD DATA AA
TO
ADDRESS 555
LOAD DATA 55
TO
ADDRESS AAA
LOAD DATA 90
TO
ADDRESS 555
ENTER PRODUCT
IDENTIFICATION
MODE^(2)(3)(5)
26. Software Product Identification
Exit⁽¹⁾
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
EXIT PRODUCT
IDENTIFICATION
MODE⁽⁴⁾
27. Boot Block Lockout Feature Enable
Algorithm⁽¹⁾
LOAD DATA AA
TO
ADDRESS 555
LOAD DATA 55
TO
ADDRESS AAA
LOAD DATA 80
TO
ADDRESS 555
LOAD DATA AA
TO
ADDRESS 555
LOAD DATA 55
TO
ADDRESS AAA
LOAD DATA 40
TO
ADDRESS 555
PAUSE 1 second⁽²⁾
Notes: 1. Data Format: I/O7 - I/O0 (Hex);
Address Format: A11 - A0 (Hex).
2. Boot block lockout feature enabled.
Notes:
1. Data Format: I/O7 - I/O0 (Hex);
Address Format: A11 - A0 (Hex).
2. A1 - A18 = V_IL.
Manufacture Code is read for A0 = V_IL;
Device Code is read for A0 = V_IH.
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: 1FH
Device Code: 13H.
Additional Device Code: 10H.
15 AT49F040B
3606A–FLASH–12/05