MCP46XXEV Microchip Technology, MCP46XXEV Datasheet - Page 29

• Manufacturer Part Number: MCP46XXEV
• Description: MCP46XX Evaluation Board DEVTOOL - Analog
• Manufacturer: Microchip Technology
• Series: -r

Specifications of MCP46XXEV

• Main Purpose: Digital Potentiometer
• Embedded: No
• Utilized Ic / Part: MCP4661
• Primary Attributes: Devices Supported MCP4631, Mcp4641, Mcp4651, MCP4661
• Secondary Attributes: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

© 2010 Microchip Technology Inc.
Double clicking on the MCP4661W0RD User I2CM Script will load the script details.
Figure 2-14 shows what the values mean in the Script Details. These values are hex
numbers.
The first value (02h), is the number of bytes that will be written. The second byte (5Eh)
is the MCP4661 I2C Slave Address with the R/W bit indicating a write (0). The third byte
(0Ch) a data byte and contains the Device Register Address, the Device Command,
and the two Most Significant bits (MSb) of the write data.
The I
that will be written. The second byte (5Fh) is the MCP4661 I2C Slave Address with the
R/W bit indicating a read (1). The last byte (02h) is the number of bytes that will be read.
FIGURE 2-14:
# of Bytes that
will be written
Data Byte #1
(Device Slave Address + R/W bit)
2
C protocol now has a restart bit. So the first value (01h) is the number of bytes
Example Read Script.
Data Byte #3
(Device Slave Address + R/W bit)
Installation and Operation
# of Bytes that
will be written
# of Bytes that
will be read
Data Byte #2
(Device Address +
Command + Data bit “D8”)
DS51929A-page 29