Rainbow Electronics AT29C020 - Manual (Page 12)

12
AT29C020
0291N–FLASH–07/02
Software Product Identification Entry (1)
Software Product Identification Exit
(1)
Notes: 1. Data Format: I/O15 - I/O0 (Hex);
Address Format: A14 - A0 (Hex).
2. A1 - A17 = 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 is 1F. The Device Code is DA.
LOAD DATA AA
TO
ADDRESS 5555
LOAD DATA 55
TO
ADDRESS 2AAA
LOAD DATA 90
TO
ADDRESS 5555
PAUSE 10 mS 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
PAUSE 10 mS EXIT PRODUCT
IDENTIFICATION
MODE (4)
Boot Block Lockout
Feature Enable Algorithm
(1)
Notes: 1. Data Format: I/O7 - I/O0 (Hex);
Address Format: A14 - A0 (Hex).
2. Lockout feature set on lower address boot block.
3. Lockout feature set on higher address boot block.
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
LOAD DATA 00
TO
ADDRESS 00000H (2)
PAUSE 20 mS
LOAD DATA FF
TO
ADDRESS 3FFFFH (3)
PAUSE 20 mS