at49bv3218 ATMEL Corporation, at49bv3218 Datasheet - Page 20

• Manufacturer Part Number: at49bv3218
• Description: 32-megabit 2mx16/4mx8 3-volt Only Flash Memory
• Manufacturer: ATMEL Corporation

Software Product Identification
Entry
Software Product Identification
Exit
Notes:
20
(1)(6)
IDENTIFICATION
(1)
EXIT PRODUCT
1.
2.
3. The device does not remain in identification mode if pow-
4.
5. Manufacturer Code: 1FH(x8); 001FH(x16)
LOAD DATA AA
ADDRESS AAA
LOAD DATA F0
LOAD DATA 55
ADDRESS 555
ADDRESS 555
AT49BV/LV3218(T)
MODE
Data Format: I/O15 - I/O8 (Don’t Care); I/O7 - I/O0 (Hex)
Address Format: A11 - A0 (Hex), A-1, and A11 - A20
(Don’t Care).
A1 - A20 = V
Manufacturer Code is read for A0 = V
Device Code is read for A0 = V
ered down.
The device returns to standard operation mode.
Device Code: 00D8H - AT49BV/LV3218
Either one of the Product ID Exit commands can be used.
TO
TO
TO
(4)
ENTER PRODUCT
IL
IDENTIFICATION
LOAD DATA AA
ADDRESS AAA
.
ADDRESS 555
LOAD DATA 55
LOAD DATA 90
00D9H - AT49BV/LV3218T
ADDRESS 555
MODE
OR
TO
TO
TO
(2)(3)(5)
IH
IDENTIFICATION
EXIT PRODUCT
LOAD DATA F0
ANY ADDRESS
.
MODE
IL
TO
;
(4)
Sector Lockdown Enable Algorithm
Notes:
1.
2.
Data Format: I/O15 - I/O8 (Don’t Care); I/O7 - I/O0 (Hex)
Address Format: A11 - A0 (Hex), A-1, and A11 - A20
(Don’t Care).
Sector Lockdown feature enabled.
SECTOR ADDRESS
PAUSE 200 µs
LOAD DATA AA
LOAD DATA AA
ADDRESS AAA
ADDRESS AAA
LOAD DATA 55
LOAD DATA 80
LOAD DATA 55
LOAD DATA 60
ADDRESS 555
ADDRESS 555
ADDRESS 555
TO
TO
TO
TO
TO
TO
(2)
2452F–FLASH–10/02
(1)