AT49BV320C ATMEL Corporation, AT49BV320C Datasheet - Page 7

• Manufacturer Part Number: AT49BV320C
• Description: 32-megabit (2M x 16) 3-volt Only Flash Memory
• Manufacturer: ATMEL Corporation

Table 2. Hardlock and Softlock Protection Configurations in Conjunction with WP
Figure 1. Sector Locking State Diagram
Notes:
3372D–FLASH–5/04
V
V
V
V
V
V
V
V
V
PP
CC
CC
CC
CC
CC
CC
CC
IL
/5V
/5V
/5V
/5V
/5V
/5V
/5V
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].
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/
01h
60h/
01h
Allowed?
Erase/
60h/
2Fh
Prog
LOCKED
Yes
Yes
Yes
No
No
No
No
No
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
Default
WP = V
Default
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.
IH
AT49BV320C(T)
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