LH28F800 Sharp Electrionic Components, LH28F800 Datasheet - Page 16

• Manufacturer Part Number: LH28F800
• Description: 8 M-bit (512 kB x 16) SmartVoltage Flash Memories
• Manufacturer: Sharp Electrionic Components

If a clear block lock-bits operation is aborted due to
V
RP# active transition, block lock-bit values are left
in an undetermined state. A repeat of clear block
Set Permanent
OPERATION
PP
Block Erase
Word Write
Clear Block
Set Block
Lock-Bits
Lock-Bit
Lock-Bit
or V
or
CC
transition out of valid range or WP# or
PERMANENT BLOCK
LOCK-BIT LOCK-BIT
X
X
0
1
0
1
0
1
0
1
X
X
X
Table 5 Write Protection Alternatives
WP#
V
V
V
V
V
V
V
V
X
X
X
X
X
IH
IH
IH
IL
IL
IL
IL
IL
V
V
V
V
IH
IH
IH
IH
RP#
V
V
V
V
V
V
- 16 -
V
V
or V
or V
or V
or V
X
X
X
HH
HH
HH
HH
IH
IH
IH
IH
HH
HH
HH
HH
lock-bits is required to initialize block lock-bit
contents to known values. Once the permanent
lock-bit is set, it cannot be cleared.
Block Erase and Word Write Enabled
Block Lock-Bit Override.
Block Erase and Word Write Enabled
Block Lock-Bit Override.
Block Erase and Word Write Enabled
Block is Locked.
Block Erase and Word Write Disabled
Permanent Lock-Bit is set.
Block Erase and Word Write Disabled
Set Block Lock-Bit Enabled
Set Block Lock-Bit Enabled
Set Block Lock-Bit Disabled
Permanent Lock-Bit is set.
Set Block Lock-Bit Disabled
Set Permanent Lock-Bit Enabled
Set Permanent Lock-Bit Disabled
Clear Block Lock-Bits Enabled
Clear Block Lock-Bits Enabled
Clear Block Lock-Bits Disabled
Permanent Lock-Bit is set.
Clear Block Lock-Bits Disabled
LH28F800SG-L/SGH-L (FOR TSOP, CSP)
EFFECT