AT49F020-55JC ATMEL Corporation, AT49F020-55JC Datasheet - Page 9

• Manufacturer Part Number: AT49F020-55JC
• Description: 2-Megabit 256K x 8 5-volt Only CMOS Flash Memory
• Manufacturer: ATMEL Corporation

Software Product
Identification Entry
Software Product
Identification Exit
Notes:
IDENTIFICATION
ADDRESS 2AAA
ADDRESS 5555
ADDRESS 5555
EXIT PRODUCT
LOAD DATA AA
LOAD DATA 55
LOAD DATA F0
1.
2.
3.
4.
5.
MODE
TO
TO
TO
Data Format: I/O7 - I/O0 (Hex);
Address Format: A14 - A0 (Hex).
A1 - A17 = V
Manufacture Code is read for A0 = V
Device Code is read for A0 = V
The device does not remain in identification mode if
powered down.
The device returns to standard operation mode.
Manufacturers Code: 1FH
Device Code: 0BH.
(4)
ENTER PRODUCT
IDENTIFICATION
ADDRESS 2AAA
LOAD DATA AA
ADDRESS 5555
ADDRESS 5555
LOAD DATA 55
LOAD DATA 90
MODE
IL
.
(1)
OR
TO
TO
TO
(1)
(2)(3)(5)
IDENTIFICATION
EXIT PRODUCT
LOAD DATA AA
ANY ADDRESS
IH
.
MODE
IL
TO
;
(4)
Boot Block Lockout Feature
Enable Algorithm
Notes:
1.
2.
Data Format: I/O7 - I/O0 (Hex);
Address Format: A14 - A0 (Hex).
Boot block lockout feature enabled.
PAUSE 1 second
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
(1)
TO
TO
TO
TO
TO
TO
(2)
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