at49bv6416c ATMEL Corporation, at49bv6416c Datasheet - Page 5

• Manufacturer Part Number: at49bv6416c
• Description: 64-megabit 4m X 16 Page Mode 2.7-volt Flash Memory
• Manufacturer: ATMEL Corporation

3465D–FLASH–04/06
Table 3-1.
Figure 3-1.
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
A
A
A
C
Allowed?
B
B
B
Erase/
Prog
Yes
Yes
Yes
No
No
No
No
No
LOCKED
C
[001]
[011]
[111]
[101]
A
B
C
C
= Softlock Command
= Hardlock Command
= Unlock Command
Hardlocked is disabled by
Hardlocked
Power-Up/Reset
Power-Up/Reset
AT49BV6416C(T)
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
Default
WP = V
IH
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