SLAU857 User guide

SLAU857A May 2021 – July 2021 MSP430FR2476 , MSP430FR2512 , MSP430FR2522 , MSP430FR2532 , MSP430FR2533 , MSP430FR2632 , MSP430FR2633 , MSP430FR2672 , MSP430FR2673 , MSP430FR2675 , MSP430FR2676

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1.1 Overview

Physical button, knobs, and sliders experience the following shortcomings compared to capacitive touch controls. Physical controls:

Experience wear and decreased reliability after prolonged use.
Require a gap between the front panel and the buttons, which is easy to be penetrated by moisture that can cause defects.
Require the user to exert force to trigger.
Require openings in the front panel that can increase cost to a certain extent.
Have relative fixed shapes.

TI CapTIvate™ capacitive touch technology supports five sensor types: buttons, proximity sensors, scroll wheels, sliders, and touch panels, and a variety of covering materials. CapTIvate technology supports low power consumption, strong and stable induction technology, strong anti-noise ability, and allows for waterproof construction.

This document helps with the capacitive touch development process and helps you quickly understand the full features of TI CapTIvate capacitive touch technology.

For a preliminary function evaluation, see Section 2, Section 3, and Section 6.
For hardware and mechanical structure development, see Section 2, Section 3, and Section 4.
For software development, see Section 3, Section 5, and Section 6.

Figure 1-1 Capacitive Touch Development Process