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MPR121 Datasheet PDF

Part Series:MPR121 Series
Category:Capacitive Touch Sensors
Description:NXP MPR121QR2 Capacitive Touch Sensor, I2C, 1.71V, 3.6V, QFN, 20Pins, -40℃
Document:MPR121QR2 Datasheet PDF (57 Pages)

MPR121 Capacitive Touch Sensors Datasheet PDF

MPR121QR2 - NXP Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Number of Pins
20 Pin
Supply Voltage (DC)
1.71V (min)
Case/Package
QFN-20
Halogen Free Status
Halogen Free
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MPR121QR2 - NXP Function Overview

The MPR121QR2 is a proximity capacitive Touch Sensor Controller. The MPR121 features an increased internal intelligence plus NXP"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 auto-configuration. 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.
29µA Typical run current at 16ms sampling interval
3µA in scan stop mode current
12 Electrodes/capacitance sensing inputs in which 8 are multifunctional for LED driving and GPIO
Integrated independent auto calibration for each electrode input
Auto configuration of charge current and charge time for each electrode input
Separate touch and release trip thresholds for each electrode
I²C interface, with IRQ interrupt output to advise electrode status changes
ESD sensitive device, take proper precaution while handling the device.
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