MCP4132 Microchip Technology Inc., MCP4132 Datasheet - Page 52
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MCP4132
Manufacturer Part Number
MCP4132
Description
7/8-bit Single/dual Spi Digital Pot With Volatile Memory
Manufacturer
Microchip Technology Inc.
Datasheet
1.MCP4132.pdf
(82 pages)
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MCP413X/415X/423X/425X
7.5.2
Continuous writes are possible only when writing to the
volatile memory registers (address 00h, 01h, and 04h).
Figure 7-3
writes. The writes do not need to be to the same volatile
memory address.
FIGURE 7-3:
DS22060A-page 52
Note 1: If a Command Error (CMDERR) occurs at this bit location (*), then all following SDO bits will be
shows the sequence for three continuous
CONTINUOUS WRITES
driven low until the CS pin is driven inactive (V
SDI
SDO
Continuous Write Sequence.
D
D
D
A
A
A
3
1
3
1
3
1
A
D
A
D
A
D
2
1
2
1
2
1
COMMAND BYTE
A
D
A
D
A
D
1
1
1
1
1
1
A
D
A
D
A
D
0
1
0
1
0
1
0
1
0
1
0
1
0
1 1* 1
0
1 1* 1
0
1 1* 1
D
D
D
9
9
9
D
D
D
8
8
8
D
D
D
7
1
7
1
7
1
IH
D
D
D
6
1
6
1
6
1
).
D
D
D
5
1
5
1
5
1
DATA BYTE
D
D
D
4
1
4
1
4
1
D
D
D
3
1
3
1
3
1
D
D
D
2
1
2
1
2
1
D
D
D
1
1
1
1
1
1
© 2007 Microchip Technology Inc.
D
D
D
0
1
0
1
0
1