MCP4331 Microchip Technology Inc., MCP4331 Datasheet - Page 55

• Manufacturer Part Number: MCP4331
• Description: 7/8-bit Quad Spi Digital Pot With Non-volatile Memory
• Manufacturer: Microchip Technology Inc.

7.6.2
Continuous reads allow the devices memory to be read
quickly. Continuous reads are possible to all memory
locations. If a non-volatile memory write cycle is
occurring, then Read commands may only access the
volatile memory locations.
FIGURE 7-5:
© 2009 Microchip Technology Inc.
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.
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
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
Figure 7-5
reads. The reads do not need to be to the same
memory address.
IH
X
D
X
D
X
D
6
6
6
).
X
D
X
D
X
D
5
5
5
DATA BYTE
D
D
D
X
4
X
4
X
4
shows the sequence for three continuous
D
D
D
X
X
X
3
3
3
MCP434X/436X
D
D
D
X
X
X
2
2
2
X
D
X
D
X
D
1
1
1
X
D
X
D
X
D
0
0
0
DS22233A-page 55