MPR121QR2 - Proximity Capacitive Touch Sensor Controller

Product Overview

Freescale Semiconductor

Part number	MPR121QR2
Manufacturer	Freescale Semiconductor
File Size	251.22 KB
Description	Proximity Capacitive Touch Sensor Controller
Datasheet	MPR121QR2 Datasheet
Note	This datasheet PDF includes multiple part numbers: MPR121QR2, MPR121. Please refer to the document for exact specifications by model.
Additional preview pages of the MPR121QR2 datasheet.

Table 1. Connect a 0.1 μF bypass cap to VSS 6 VSS Ground 7 REXT External Resistor Connect a 75 kΩ 1% resistor to VSS to set internal refe

an increased internal intelligence plus Freescale’s second generation capacitance detection engine. Some major enhancements include an increased electrode count, a hardware configurable I2C address, an expanded filtering system with debounce, and completely independent electrodes with built-in autoconfiguration. The device also features a 13th simulated electrode which represents the simultaneous charging of all the electrodes connected together. When used with a touch panel or touch screen arra.

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Published: Sep 23, 2015 |