Software product identification entry(1), Software product identifcation exit(1), Boot block lockout enable algorithm(1) – Rainbow Electronics AT49F512 User Manual
Page 9: Software product identificati on entry, Software product identifcation exit, Boot block lockout enable algor ithm
AT49F512
9
Software Product Identification Entry
(1)
Software Product Identifcation Exit
(1)
Notes:
1.
Data Format: I/O7 - I/O0 (Hex);
Address Format: A14 - A0 (Hex).
2.
A1 - A15 = V
IL
.
Manufacture 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 pow-
ered down.
4.
The device returns to standard operation mode.
5.
Manufacturer Code: 1FH
Device Code: 03H
Boot Block
Lockout Enable Algorithm
Notes:
1.
Data Format: I/O7 - I/O0 (Hex);
Address Format: A14 - A0 (Hex).
2.
Boot block lockout feature enabled.
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA 90
TO
ADDRESS 5555
ENTER PRODUCT
IDENTIFICATION
MODE
(2)(3)(5)
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA F0
TO
ADDRESS 5555
EXIT PRODUCT
IDENTIFICATION
MODE
(4)
LOAD DATA F0
TO
ANY ADDRESS
EXIT PRODUCT
IDENTIFICATION
MODE
(4)
OR
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA 80
TO
ADDRESS 5555
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA 40
TO
ADDRESS 5555
PAUSE 1 second
(2)