Microchip Technology MCP42XX, Руководство пользователя

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MCP42XX PICTAIL™ PLUS
DAUGHTER BOARD USER’S GUIDE
©
2008 Microchip Technology Inc. DS51759A-page 9
Chapter 2. Installation and Operation
2.1 INTRODUCTION
The MCP42XX PICtail Plus Daughter Board is used to demonstrate the operation of
Digital Potentiometer. The operation of the MCP41XX devices is similar to the
MCP42XX devices. Therefore, this demo board can be used as a development plat-
form for either device family.
This board is designed to be used in conjunction with either the PIC24 Explorer 16
Demo Board or the PICkit™ Serial Analyzer.
2.2 FEATURES
This board supports the following features
• Each digital potentiometers Terminal A pin can be individually connected to either
AV
DD
or the corresponding VAx pad
• Each digital potentiometers Terminal B pin can be individually connected to either
AV
SS
or the corresponding VBx pad
• Can control the voltage on the MCP4261’s CS pin to either V
SS
, 3.3V, 5.0V, or
9.0V via control signals from the PICtail Plus interface (J3)
• Can Control the MCP4261 via the PICkit™ Serial Analyzer interface (J1)
• PIC24 can monitor the voltage levels of the MCP4261’s W0 and W1 pins
• Supplied with a “C” program that demonstrates normal and high voltage
commands
• Demonstrates a split rail application, with digital logic at 3.3V and analog
operation at 5.0V