MPR121QR2
features 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 pletely 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 array, the 13th simulated electrode allows a greater near proximity detection distance and an increased sensing area.
Features
- 1.71V to 3.6V operation
- 29 μA typical run current at 16 ms sampling interval
- 3 μA in scan stop mode current
- 12 electrodes/capacitance sensing inputs in which 8 are multifunctional for LED driving and GPIO
- Integrated independent autocalibration for each electrode input
- Autoconfiguration of charge current and charge time for each electrode input
- Separate...
