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MPR121 GPIO and LED driver function

Posted: 30 Mar 2010 ?? ?Print Version ?Bookmark and Share

Keywords:LED driver? MPR121 GPIO? LED driver function?

MPR121 is a feature-rich second generation touch sensor controller after Freescale's initial release of the MPR03x series device. MPR121 not only has priority unique features like independent electrode auto configuration, 13th simulated pseudo electrode for proximity detection, it also has 8 GPIO ports with LED driver capability. The GPIO and LED driver function can be used when not all the 12 input sensing channels are occupied for touch sensing detection, which is made possible by internal multiplexed pin structure. This increases the cost efficiency of the system and makes the MPR121 fit for even wider application.

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