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231AAA Datasheet(PDF) 11 Page - List of Unclassifed Manufacturers |
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231AAA Datasheet(HTML) 11 Page - List of Unclassifed Manufacturers |
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11 / 36 page  ProxSense ® Series Copyright © Azoteq 2016 IQS231A Datasheet v1.3 Page 11 of 36 All Rights Reserved Check for latest datasheet December 2016 Summary: Features (Continued 2 …) Sync input In order to ensure a stable sensing environment, sensing may be done in strategic time windows controlled by a master device. Automatic tuning (ATI) The Automatic tuning implementation (ATI) ensures optimal sensitivity during runtime for various sensor environments. Two channels are calibrated (proximity channel and movement channel). Both run on the same Cx pin in different time slots. An ATI-block time is defined to prevent re-ATI loops during touch release events. The ATI-block is fixed for the movement channel, and fixed for the standard touch/proximity channel Reference signal behaviour Long-term-average (LTA: signal reference) behavior is optimized for SAR where trigger tests are important in product qualification. The LTA will therefore be slow while still able to prevent typical temperature drift from causing activations. Improved I 2C interface Standard I 2C polling for: Debugging & normal use Device polling optimized for guaranteed response (within tCLK_stretch – clock stretching will be applied to the bus SCL line) |
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