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NCD2400M Datasheet(PDF) 16 Page - IXYS Corporation

Part No. NCD2400M
Description  Wide Capacitance Range, Non-volatile Digital Programmable Capacitor
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Maker  IXYS [IXYS Corporation]
Homepage  http://www.ixys.com
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NCD2400M Datasheet(HTML) 16 Page - IXYS Corporation

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INTEGRATED CIRCUITS DIVISION
NCD2400M
16
www.ixysic.com
R01
Prior to writing new data into the non-volatile memory
the existing data must be erased. The erase operation
is a non-volatile write with CONFIG 0 = xxxx0000. A
Read command is not required following an erase
operation unless the change is to set the memory
nibble(s) value to 0x0.
In the programming example below, the three memory
nibbles are being written with address 0x2 first and
0x0 last.
The logical structure of a Write Non-Volatile Memory
Operation is provided in the diagram below.
WRITE OPERATION: NON-VOLATILE MEMORY
The logic diagram above is for writing new CDAC data into memory, not an erase operation.
Master to slave
Chip ID + W
Slave to Master
CONFIG 1
CONFIG 0
WAIT
11
0
0
00
00
11
x
x
0x
0x
xx
x
x
xx
xx
xx
x
x
xx
x
NV <8>
a
7-Bit Address
R / W
NV / V
NV Memory
Address
Set
NV Mode
Master to slave
Chip ID + W
Slave to Master
CONFIG 1
CONFIG 0
WAIT
11
0
0
00
00
10
x
x
0x
1x
xx
x
x
xx
xx
xx
x
x
NV <7:4>
Master to slave
Chip ID + W
Slave to Master
CONFIG 1
CONFIG 0
WAIT
11
0
0
00
00
10
x
x
0x
0x
xx
x
x
xx
xx
xx
x
x
NV <3:0>
a
7-Bit Address
R / W
NV / V
NV Memory
Address
Set
NV Mode
a
7-Bit Address
R / W
NV / V
NV Memory
Address
Set
NV Mode
Programming Time
Programming Time
Programming Time
S Chip ID + W A
CONFIG 1
A
CONFIG 0
A
WAIT
A
WAIT
A
WAIT
A P
...
S Chip ID + W A
CONFIG 1
A
CONFIG 0
A
WAIT
A
WAIT
A
WAIT
A P
...
S Chip ID + W A
CONFIG 1
A
CONFIG 0
A
WAIT
A
WAIT
A
WAIT
A P
...


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