at49sn6416 ATMEL Corporation, at49sn6416 Datasheet - Page 8

• Manufacturer Part Number: at49sn6416
• Description: 64-megabit 4m X 16 Burst/page Mode 1.8-volt Flash Memory
• Manufacturer: ATMEL Corporation

8
AT49SN6416(T)
Table 3-2.
Figure 3-2.
Note:
V
V
V
V
V
V
V
V
V
PP
CC
CC
CC
CC
CC
CC
CC
IL
1. The notation [X, Y, Z] denotes the locking state of a sector. The current locking state of a sector
is defined by the state of WP and the two bits of the sector-lock status D[1:0].
Hardlock and Softlock Protection Configurations in Conjunction with WP
Sector Locking State Diagram
WP
0
0
0
1
1
1
1
x
WP = V
WP = V
Hard-
lock
IL
IH
0
0
1
0
0
1
1
x
= 0
= 1
UNLOCKED
[000]
[110]
[100]
Soft-
lock
0
1
1
0
1
0
1
x
60h/
D0h
60h/
D0h
60h/D0h
60h/01h
60h/
2Fh
60h/
Allowed?
01h
60h/
01h
Erase/
Prog
Yes
Yes
Yes
No
No
No
No
No
60h/
2Fh
LOCKED
60h/D0h = Unlock Command
60h/01h = Softlock Command
60h/2Fh = Hardlock Command
[001]
[011]
[111]
[101]
60h/
2Fh
Hardlocked is disabled by
Hardlocked
Power-Up/Reset
Power-Up/Reset
Comments
No sector is locked
Sector is Softlocked. The Unlock
command can unlock the sector.
Hardlock protection mode is
enabled. The sector cannot be
unlocked.
No sector is locked.
Sector is Softlocked. The Unlock
command can unlock the sector.
Hardlock protection mode is
overridden and the sector is not
locked.
Hardlock protection mode is
overridden and the sector can be
unlocked via the Unlock
command.
Erase and Program Operations
cannot be performed.
Default
WP = V
Default
IH
3464C–FLASH–2/05