AT52BC6402AT-70CU Atmel, AT52BC6402AT-70CU Datasheet - Page 5
AT52BC6402AT-70CU
Manufacturer Part Number
AT52BC6402AT-70CU
Description
Manufacturer
Atmel
Datasheet
1.AT52BC6402AT-70CU.pdf
(38 pages)
Specifications of AT52BC6402AT-70CU
Operating Supply Voltage (max)
3.1V
Operating Temperature (max)
85C
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
3441B–STKD–11/04
Table 1. Hardlock and Softlock Protection Configurations in Conjunction with WP
Figure 1. Sector Locking State Diagram
Note:
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
WP = V
0
0
0
1
1
1
1
x
WP = V
IL
IH
= 0
= 1
Hard-
lock
0
0
1
0
0
1
1
x
UNLOCKED
[000]
[110]
[100]
Soft-
lock
0
1
1
0
1
0
1
x
A
A
A
Allowed?
Erase/
Prog
Yes
Yes
Yes
No
No
No
No
No
C
B
B
B
LOCKED
C
[001]
[011]
[111]
[101]
AT52BC6402A(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.
A
B
C
C
= Softlock Command
= Hardlock Command
= Unlock Command
Hardlocked is disabled by
Hardlocked
Power-Up/Reset
Power-Up/Reset
Default
Default
WP = V
IH
5