Tech First Kit-Freescale-KITMPR03XEVM-Capacitive Touch-EVK

Mechanical buttons and switches for touch user interfaces are becoming a thing of the past. Proximity capacitive touch sensors in simple linear or rotational sliders offer significant advantages for numerous applications. They are more convenient to use with no moving parts to wear out, more energy efficient and are more easily integrated to create an intelligent system.

The KITMPR03XEVM evaluation kit allows a user to observe the basic functionality of the device through a couple of demo's including a pinball game and a presentation device.  In addition, a more detailed evaluation mode teaches a user to configure the part and can allow for quick changes to settings.

The KITMPR03XEVM Evaluation Kit contains the hardware essentials you will need to use the Kit. The items in the Evaluation Kit and their use are as follows.

• KITMPR03x motherboard
• MPR031 DIP board
• 2+IRQ electrode daughter card
• 3 electrode daughter card
• 4 MPR031 cut tape samples
• Quick Start Guide

• 1.71V to 2.75V operation
• 8 μA supply current with two electrodes being monitored with 64 ms response time and IRQ enabled
• 4 μA maximum shutdown current
• Two electrodes plus IRQ
• Three electrodes and no IRQ
• Continuous independent auto-calibration for each electrode input
• Separate touch and release trip thresholds for each electrode, providing hysteresis and electrode independence
• I2C interface, with optional IRQ output to advise electrode status changes
• 2 x 2 x 0.65 mm 8-lead uDFN package
• -40°C to +85°C operating temperature range