Capacitive Touch Controllers

Texas Instruments' (TI) solutions for touch enabled applications include ultra-low power MSP430 microcontrollers, capacitive and resistive touch screen controllers as well as inertial and piezo haptic actuator drivers.

 

Capacitive Touch Controllers

MSP430™ MCUs enable the lowest power touch devices for Buttons, Sliders, Wheels and Proximity applications.

MSP430 Capacitive Touch Features:

  • Ultra-Low power operation with 1.8V operation and < 1uA Average current per button
  • Touch Optimized peripherals with glue-less interface to touch sensors.
  • Free open source Capacitive Touch software library
  • Touch Pro GUI to evaluate, diagnose and tune touch sensors.
  • Comprehensive design guides to help developers design touch solutions
Buttons, Sliders and Wheels

Featured Solutions

MSP430 Capacitive Touch with Haptics Solutions

The MSP430 capacitive touch with haptics solutions allows users to experience 122 different haptics effects and gives them the ability to sync haptics with audio inputs. Haptics technology provides tactile feedback, using mechanical vibrations, dramatically reducing user error in touch applications.



MSP430™ Capacitive Touch Pro GUI

The MSP430 Touch Pro Tool is a PC-based tool that can be used to verify capacitive touch button, slider,and wheel designs. The tool receives and visualizes captouch sensor data to help the user quickly and easily evaluate, diagnose, and tune button, slider, and wheel designs.

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MSP430™ Capacitive Touch Power Designer GUI

The MSP430 Capacitive Touch Power Designer GUI allows designers to estimate power consumption for a given MSP430 capacitive touch system even before laying out a board. By entering system parameters such as operating voltage, frequency, number of buttons, and button gate time, the user can have a power estimate for a given capacitive touch configuration on a given device family in minutes.

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Review our Design Resources:

Design Guides

Software Library

The royalty-free MSP430 Capacitive Touch Sense Software Library gives developers the option to add touch sense capabilities to any MSP430 microcontroller consuming as little as 1KB of program memory. The open-source software library eliminates the need to develop complex touch sensing algorithms and supports various capacitive touch sensors, including buttons, sliders, wheels and proximity.

Reference Designs

boosterpack

Capacitive Touch Hardware Development Kits

The Capacitive Touch BoosterPack (430BOOST-CAPTOUCH1) is a plug in board for the MSP430 Value Line LaunchPad development kit (MSP-EXP430G2 - sold separately). The Capacitive Touch BoosterPack ($10) features several capacitive touch elements including a scroll wheel, button and proximity sensor. Also, on-board are 9 LEDs that provide instant feedback as users interact with the capacitive touch elements.


haptouch

Hap-Touch BoosterPack Development Kit

The Hap-Touch BoosterPack allows user to experience capacitive touch with Imersion Touchsense 2200™ haptics on a gaming controller. This boosterpack features MSP430TCH5E haptics controllers and DRV2603 haptics driver.





haptouch

MSP430FR5969 LaunchPad Development Tool with Sharp® Memory LCD BoosterPack Bundle

The Sharp® Memory LCD BoosterPack Plug-in Module is based on the LS013B4DN04 display from Sharp Electronics and features capacitive touch sliders. MCU LaunchPad Evaluation Kit developers can use this BoosterPack to display sensor readings, time & other information using the displays 96x96 pixels as well as to provide touch based input!



 

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Capacitive Touch Optimized Microcontrollers

The MSP430 Value Line G2xx2/3 devices include capacitive touch sense IOs, which enable developers to interface directly with capacitive touch pads without external components. The MSP430F51x2 devices include Timer_D, a high-performance timer featuring a 4 nanosecond resolution, enabling high-precision touch sensing.


Device Flash [KB] FRAM [KB] RAM [Bytes] Capacitive Touch Features Touch Buttons Supported Additional Features Datasheet Samples
Touch Sense IO1 Timer_D2 Digital Analog
View Product Info MSP430G2x02 1-8   128-256 ≤16 USI3 Download PDF Download Order Samples Order
View Product Info MSP430G2x32 1-8   128-256 ≤16 USI ADC10 Download PDF Download Order Samples Order
View Product Info MSP430G2x13 1-16   256-512 ≤ 24 USCI4 Comp Download PDF Download Order Samples Order
View Product Info MSP430G2x52 1-8   256 Checkmark ≤ 16 USCI Comp, ADC10 Download PDF Download Order Samples Order
View Product Info MSP430G2x53 1-16   256-512 ≤ 24 USCI Comp, ADC10 Download PDF Download Order Samples Order
View Product Info MSP430G2x03 2-8   256-512 ≤ 24 USCI Download PDF Download Order Samples Order
View Product Info MSP430G2x33 2-16   256-512 ≤ 24 USCI Comp, ADC10 Download PDF Download Order Samples Order
View Product Info MSP430G2xx5 New! 32-56   4096   <=32 USCI ADC10, Comp Download PDF Download Order Samples Order
View Product Info MSP430F51x1 8-32   1024-2048 ≤ 29 USCI Comp Download PDF Download Order Samples Order
View Product Info MSP430F51x2 8-32   1024-2048 ≤ 29 USCI Comp, ADC10 Download PDF Download Order Samples Order
View Product Info MSP430FR58XX/59XX New!   32-64 1024-2048 ≤40 eUSCI ADC12 Comp Download PDF Download Order Samples Order
View Product Info MSP430TCH5E 1-16 256-512 ≤24 USCI4 Comp Download PDF Download Order Samples Order

1 Touch Sense IO: each I/O supports pin oscillation enabling low-cost touch sensing with no external components
2 Timer_D: high-resolution 4ns timer for high-precision touch sensing
3 USI: serial communication interface supporting SPI and I2C
4 USCI: serial communication interface supporting I2C, UART and 2x SPI


 

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