Software product identification entry(1), Software product identification exit(1)(6), Boot block lockout enable algorithm(1) – Rainbow Electronics AT49F8192AT User Manual
Page 12: Software product identification entry, Software product identification exit, Boot block lockout enable algorithm
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AT49F008A(T)/8192A(T)
1199F–04/01
Software Product Identification Entry
(1)
Software Product Identification Exit
(1)(6)
Notes:
1.
Data Format: I/O15 - I/O8 (Don’t Care); I/O7 - I/O0 (Hex).
Address Format: A15 - A0 (Hex); A-1 and A15 - A18 (Don’t
Care).
2.
A1 - A18 = V
IL
.
Manufacturer Code is read for A0 = V
IL
.
Device Code is read for A0 = V
IH
.
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: 22H (AT49F008A); 00A0H (AT49F8192A);
21H (AT49F008AT); 00A3H (AT49F8192AT)
6.
Either one of the Product ID Exit commands can be used.
Boot Block Lockout Enable
Algorithm
(1)
Notes:
1.
Data Format: I/O15 - I/O8 (Don’t Care); I/O7 - I/O0 (Hex).
Address Format: A15 - A0 (Hex); A-1 and A15 - A18 (Don’t
Care).
2.
Boot Block Lockout feature enabled.
LOAD DATA AA
TO
ADDRESS 5555
(7)
LOAD DATA 55
TO
ADDRESS 2AAA
(7)
LOAD DATA 90
TO
ADDRESS 5555
(7)
ENTER PRODUCT
IDENTIFICATION
MODE
(2)(3)(5)
LOAD DATA AA
TO
ADDRESS 5555
(7)
LOAD DATA 55
TO
ADDRESS 2AAA
(7)
LOAD DATA F0
TO
ADDRESS 5555
(7)
EXIT PRODUCT
IDENTIFICATION
MODE
(4)
OR
LOAD DATA F0
TO
ANY ADDRESS
EXIT PRODUCT
IDENTIFICATION
MODE
(4)
LOAD DATA AA
TO
ADDRESS 5555
(3)
LOAD DATA 55
TO
ADDRESS 2AAA
(3)
LOAD DATA 80
TO
ADDRESS 5555
(3)
LOAD DATA AA
TO
ADDRESS 5555
(3)
LOAD DATA 55
TO
ADDRESS 2AAA
(3)
LOAD DATA 40
TO
ADDRESS 5555
(3)
PAUSE 1 second
(2)