at29lv040a ATMEL Corporation, at29lv040a Datasheet - Page 12

• Manufacturer Part Number: at29lv040a
• Description: 4-megabit 512k X 8 3-volt Only 256-byte Sector Flash Memory
• Manufacturer: ATMEL Corporation

23. Software Product Identification
24. Software Product Identification
Notes:
0334G–FLASH–2/05
Entry
Exit
1. Data Format: I/O7 - I/O0 (Hex);
2. A1 - A18 = V
3. The device does not remain in identification mode if
4. The device returns to standard operation mode.
5. Manufacturer Code is 1F. The Device Code is C4.
Address Format: A14 - A0 (Hex).
Manufacturer Code is read for A0 = V
Device Code is read for A0 = V
powered down.
(1)
(1)
ADDRESS 2AAA
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
LOAD DATA 55
LOAD DATA 90
ADDRESS 2AAA
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
PAUSE 20 mS
LOAD DATA F0
LOAD DATA 55
PAUSE 20 mS
TO
TO
TO
TO
TO
TO
IL
.
ENTER PRODUCT
IDENTIFICATION
MODE
EXIT PRODUCT
IDENTIFICATION
MODE
(2)(3)(5)
(4)
IH
.
IL
;
25. Boot Block Lockout
Notes:
Feature Enable Algorithm
ADDRESS 00000H
1. Data Format: I/O7 - I/O0 (Hex);
2. Lockout feature set on lower address boot block.
3. Lockout feature set on higher address boot block.
LOAD DATA 00
PAUSE 20 mS
Address Format: A14 - A0 (Hex).
TO
(2)
ADDRESS 2AAA
ADDRESS 2AAA
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
LOAD DATA 55
LOAD DATA 80
LOAD DATA 55
LOAD DATA 40
TO
TO
TO
TO
TO
TO
AT29LV040A
ADDRESS FFFFFH
LOAD DATA FF
PAUSE 20 mS
TO
(1)
(3)
12