lrs1805a Sharp Microelectronics of the Americas, lrs1805a Datasheet - Page 17

• Manufacturer Part Number: lrs1805a
• Description: Stacked Chip Flash Memory Smartcombo
• Manufacturer: Sharp Microelectronics of the Americas

sharp
PCR.15-11 = RESERVED FOR FUTURE
PCR.10-8 = PARTITION CONFIGURATION (PC2-0)
PC2 PC1PC0
0 0 0
0 0 1
0 1 0
1 0 0
000 = No partitioning. Dual Work is not allowed.
001 = Plane1-3 are merged into one partition.
010 = Plane 0-1 and Plane2-3 are merged into one
100 = Plane 0-2 are merged into one partition.
011 = Plane 2-3 are merged into one partition. There are
110 = Plane 0-1 are merged into one partition. There are
101 = Plane 1-2 are merged into one partition. There are
15
R
R
7
(default in a bottom parameter device)
partition respectively.
(default in a top parameter device)
three partitions in this configuration. Dual work
operation is available between any two partitions.
three partitions in this configuration. Dual work
operation is available between any two partitions.
three partitions in this configuration. Dual work
operation is available between any two partitions.
ENHANCEMENTS (R)
PARTITION1
PARTITIONING FOR DUAL WORK
PARTITION1
14
R
R
6
PARTITION1
PARTITION0
PARTITION0
13
R
R
5
PARTITION0
Partition Configuration Register Definition
PARTITION0
Partition Configuration
12
R
R
4
L R S 1 8 0 5 A
PCR.7-0 = RESERVED FOR FUTURE ENHANCEMENTS (R)
Notes:
After power-up or device reset, PCR10-8 (PC2-0) is set to
“001” in a bottom parameter device and “100” in a top
parameter device.
See the table below for more details.
PCR.15-11 and PCR.7-0 are reserved for future use and should
be masked out when polling the partition configuration
register.
PC2 PC1PC0
0 1 1
1 1 0
1 0 1
1 1 1
111 = There are four partitions in this configuration.
11
R
R
3
Each
respectively. Dual work operation is available
between any two partitions.
PARTITION2
PARTITION3
PARTITION2
PARTITIONING FOR DUAL WORK
PARTITION2
plane
PC2
10
R
2
PARTITION2
PARTITION1
corresponds
PARTITION1
PARTITION1
PC1
PARTITION1
R
9
1
PARTITION0
to
PARTITION0
each
PARTITION0
PARTITION0
PC0
R
partition
8
0
15