at29c040a ATMEL Corporation, at29c040a Datasheet - Page 13

• Manufacturer Part Number: at29c040a
• Description: At29c040a 4-megabit 512k X 8 5-volt Only 256-byte Sector Flash Memory
• Manufacturer: ATMEL Corporation

25. Software Product Identification
26. Software Product Identification
Notes:
0333K–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 A4.
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
PAUSE 10 mS
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
LOAD DATA 55
LOAD DATA F0
PAUSE 10 mS
TO
TO
TO
TO
TO
TO
IL
.
ENTER PRODUCT
IDENTIFICATION
MODE
EXIT PRODUCT
IDENTIFICATION
MODE
(2)(3)(5)
(4)
IH
.
IL
;
27. 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 10 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
ADDRESS 7FFFFH
AT29C040A
LOAD DATA FF
PAUSE 10 mS
TO
(1)
(3)
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