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AN747

Title:
Communicating with Daisy Chained MCP42XXX Digital Potentiometers
Name:
AN747
Date:
03/14/2004
Author:
Craig L. King, Ezana Haile
Description:
The MCP41XXX and MCP42XXX family of digital potentiometers allow for daisy chaining of multiple devices on a single SPI? bus. It is possible to communicate to multiple devices using one 3-wire data bus (CS, CLK and DATA), by connecting the SO pin on one device to the SI pin of the next device in the chain. This application note details one example of source code that is used to communicate with eight daisy chained devices.
Keywords:
Potentiometer, Digital Potentiometer, MCP4XXXX, MCP41XXX, MCP42XXX, SPI, Daisy Chain
 
Application Notes & Source Code
 Last Updated
Size
 
  AN747
  03/14/2004
  132KB
  AN747 Source Code - Communicating with Daisy Chained MCP42XXX Digital Potentiometers
  02/28/2005
  2KB
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