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Using I2C comm with the bq275xx fuel gauges

Posted: 15 Oct 2014 ?? ?Print Version ?Bookmark and Share

Keywords:Texas Instruments? bq275xx? battery fuel gauges? bit-transaction? cell voltage?

This application note provides two examples that illustrate the bit-transaction details of I2 commands used with the Texas Instruments bq275xx series of battery fuel gauges. The first example shows how to implement a simple fuel gauge command that interrogates the gauge for reading cell voltage. The second example shows the added bit transitions required to access a gauge subcommand, specifically requesting firmware version information. Other I2 commands can be executed in the same manner, using the methodology of these two examples.

View the PDF document for more information.

Originally published by Texas Instruments Inc. at www.ti.com as "Using I2 Communication with the bq275xx Series of Fuel Gauges".





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