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Applications Development Tools Products Documentation

Microcontrollers With On-Chip Touch

Easy-to-Use Touch Library Solutions for Buttons, Sliders, Wheels and Proximity

Creating a high-performance capacitive touch interface for your product doesn’t have to be difficult, time consuming or expensive. Our industry-leading touch-enabled microcontrollers (MCUs), paired with our easy-to-use development tools, make adding capacitive touch almost effortless for most applications.

Get Started With Touch

Learn About MPLAB® Code Configurator

Exceptional Flexibility: Multiple MCU Architectures for Capacitive Sensing

We offer a wide variety of touch-enabled PIC^®, AVR^® and SAM MCUs and dsPIC33C Digital Signal Controllers (DSCs) that make it easy to enable high-performance and reliable touch sensing in your design. Use our touch library, which is available in MPLAB^® Code Configurator (MCC), to configure the following Core Independent Peripherals (CIPs), streamline your software development and enhance the performance of touch applications:

Analog-to-Digital Converter with Computation (ADCC) and Context Switching (ADCCC)
Peripheral Touch Controller (PTC)
Hardware Capacitive Voltage Divider (HCVD)
Analog-to-Digital Converter (ADC)

The on-chip touch modules support self- and mutual-capacitance measurements to provide exceptional design flexibility. The touch library utilizes the touch hardware available on the MCU and enables you to reuse your code across part families and even across MCU architectures. The touch development workflow that you use with one of our MCUs can be implemented in any other of our touch-enabled MCUs that you may select for your next project.

Autonomous and Robust

CIPs enable autonomous touch operation that frees up CPU resources and reduces power consumption, even in designs that have a very high button count and/or that offer many touch functions. Our touch library maximizes the capabilities of the CIPs to deliver the highest sensitivity, superior noise immunity and water tolerance for demanding touch applications that are exposed to and need to function in harsh environments.

Capacitive Touch Applications

While buttons for user interfaces are the most common implementations of capacitive touch, there are many other use cases for capacitive touch sensing. Our touch solutions are leading the way in many new capacitive touch applications.

Functional Safety Touch

Functional safety is essential in many markets. Automotive functional safety requirements are governed by ISO 26262. Our Functional Safety Touch Library reduces your development time and effort for a variety of automotive applications, including:

Cruise control on steering wheels
Hazard buttons
Mirror control clusters

Learn More

Hands-off Detection

Advanced Drive Assistance Systems (ADAS) systems use Hands-off Detection (HoD) to verify that a driver's hands are on the steering wheel. We offer a complete, single-chip HoD solution to speed up your implementation and shorten your time to market.

Radiant Heating

Radiant heating is more efficient than traditional car heating systems. Our touch solution for radiant heating controls can help you design an EV heating system that quickly brings the cabin temperature up to comfortable levels.

Car Door Handles and Controls

Touch-based user interfaces aren’t only restricted to a car’s interior. We provide dedicated touch solutions to enable Near Field Communication (NFC) in door handles or to create touch buttons to open a car door.

Digital Level Sensing

Our capacitive Digital Level Sensing (DLS) solution senses the levels of liquids, eliminating the need for a floating element and the complexities of a mechanical solution.

Touchpads With Gestures

A touchpad can provide users with an easy and intuitive way to control their devices. Discover how easy it is to add a touchpad to control your new product.

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Is a Turnkey Capacitive Touch Controller a Better Option for Your Design?

We also offer plug-and-play turnkey touch controllers if you want a simple and fast option for replacing mechanical buttons without making any additional changes to your product.

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Development Tools

Featured Hardware Development Tools

Here are several featured touch development boards that will make it easy to create your capacitive touch sensing application:

QT7 XPlained Pro Extension Kit

ATQT7-XPRO

The QT7-XPRO is optimized for capacitive self-sensing. It provides two buttons and a slider and supports water-tolerant and noise-robust touch.

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T10 XPlained Pro Extension Kit

AC47H23A

The T10-XPRO is optimized for capacitive mutual-sensing, providing four buttons and a slider. It supports water-tolerant and noise-robust touch. It features Boost Mode technology to scan multiple touch nodes at once, saving time and power and/or increasing SNR in the process.

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Curiosity Nano Touch Adapter

AC80T88A

The Curiosity Nano Touch Adapter connects Curiosity Nano MCU evaluation boards to Xplained Pro touch extension boards.

Learn More

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ATtiny817 Water Tolerance Demonstration Kit

ATTINY817-QTMOISTD

This kit enables out of the box validation of:

Water-tolerant touch utilizing Driven Shield+ technology
Passing IEC 61000-4-6 level 3 (10 Vrms) conducted immunity with full functionality

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Water-Tolerant 2D Touch Surface Development Kit - PIC^® MCU Edition

DM164149

This kit offers a complete out of the box experience for the 2D Touch Library:

Water-tolerant touchpad
On-chip gesture recognition (taps, swipes, pinch/zoom)
Reference firmware to pass IEC 61000-4-6 level 3 (8 Vrms) conducted immunity

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BIST XPlained Pro

AC11C60A

The BIST-XPRO is a inter-connector board for the XPRO and Curiosity Nano ecosystem. It adds the to ability to introduce pin failures in early stages of development.

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T9 XPlained Pro

AC89D55A

The T9 Xplained Pro kit is an extension board that enables easy evaluation of Metal over Cap (MoC), our patented solution for waterproof touch on metal. The kit demonstrates water proof touch, speed and noise immunity for touch buttons on metal surfaces.

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PIC32CM LE00 Ultra-low Power Water-Tolerant Touch Reference Design

EV55S83A

This reference design is driven by a 32-bit PIC32CM LE00 MCU with integrated enhanced Peripheral Touch Controller (PTC). It enables out-of-the-box validation of water-tolerant touch utilizing our Driven Shield+ technology. It supports taps, swipes, pinch/zoom and single-finger tracking and features ultra-low power with wake-up-on-touch support. It passes IEC/EN 61000 4-6, level 3 (10V rms) certification with conducted immunity.

Learn More

dsPIC33CK Touch CAN LIN Curiosity Development Board

EV97U97A

This Curiosity development board allows you to evaluation capacitive touch using core-independent touch DSCs. This board has an on-board touch button, slider, and CAN/CAN FD and LIN transceivers. It supports two Xplained Pro connectors to interface to QT Touch boards.

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See More Touch Development Tools

Software Development Tools

The MPLAB^® development environment is a single tool chain supporting all PIC^®, AVR^® and SAM microcontrollers and can be used to simplify touch configuration in your design. It includes these tools:

MPLAB® X Integrated Development Environment (IDE)

MPLAB X IDE is an expandable, highly configurable software program that incorporates powerful tools to help you discover, configure, develop, debug and qualify embedded designs for most of our microcontrollers and digital signal controllers. It offers a host of features to help you quickly debug your projects and minimize your development time.

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MPLAB Xpress Cloud-Based IDE

MPLAB Xpress Cloud-Based IDE is an online development environment that contains the most popular features of MPLAB X IDE. It is a perfect starting point for new users of PIC^® and AVR^® microcontrollers (MCUs) and requires no downloads, no machine configuration and no waiting to get started on your system development.

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MPLAB Code Configurator

MPLAB Code Configurator (MCC) is a free, graphical programming environment that generates seamless, easy-to-understand C code to be inserted into your project. Using an intuitive interface, it enables and configures a rich set of peripherals and functions specific to your application.

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MPLAB Harmony v3

MPLAB Harmony v3 is a fully integrated embedded software development framework for 32-bit PIC and SAM MCUs that provides flexible and interoperable software modules to simplify the development of value-added features and reduce your product’s time to market.

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MPLAB Data Visualizer

Troubleshooting your code's run-time behavior has never been easier. MPLAB^® Data Visualizer is a free debugging tool that graphically displays run-time variables in an embedded application. Available as a plug-in for MPLAB X Integrated Development Environment (IDE) or a stand-alone debugging tool.

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