MCP4142 Microchip Technology Inc., MCP4142 Datasheet - Page 52

• Manufacturer Part Number: MCP4142
• Description: 7/8-bit Single/dual Spi Digital Pot With Volatile Memory
• Manufacturer: Microchip Technology Inc.

MCP414X/416X/424X/426X
7.6.2
Continuous reads allows the devices memory to be
read quickly. Continuous reads are possible to all mem-
ory locations. If a non-volatile memory write cycle is
occurring, then Read commands may only access the
volatile memory locations.
FIGURE 7-5:
DS22059A-page 52
Note 1: If a Command Error (CMDERR) occurs at this bit location (*), then all following SDO bits will be
CONTINUOUS READS
driven low until the CS pin is driven inactive (V
SDI
SDO
Continuous Read Sequence.
A
D
A
D
A
D
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
1
1
1
1
1
1
1
1 1* D
1
1 1* D
1
1 1* D
X
X
X
X
X
X
8
8
8
X
D
X
D
X
D
7
7
7
IH
Figure 7-5
reads. The reads do not need to be to the same
memory address.
).
X
D
X
D
X
D
6
6
6
D
D
D
X
5
X
5
X
5
DATA BYTE
D
D
D
X
X
X
4
4
4
shows the sequence for three continuous
X
D
X
D
X
D
3
3
3
X
D
X
D
X
D
2
2
2
X
D
X
D
X
D
1
1
1
© 2007 Microchip Technology Inc.
X
D
X
D
X
D
0
0
0