Low-Power Touch Through Glass Reference Design
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Key Document


Human Machine Interface (HMI) is an essential part of process plants since it is one of the major ways through which humans and machines interact.
The TIDA-00343 reference design offers an HMI solution for harsh and hazardous area applications. In process plants, operators need to interact with an explosion-proof display/controller which is encapsulated in a screw-on metallic enclosure with a thick glass window for local read out and programming functions.

Thanks to the TIDA-00343 TI Design which uses MSP430™ microcontrollers (MCU) with CapTIvate™ technology the operator will be able to interact with the controller without the need of opening the enclosure saving time by avoiding work permit or plant shutdown.

  • Four Robust Buttons Option Implemented
  • Variable Airgap between Buttons and Glass(1-2mm)
  • Finger Detection through 10mm Thick Glass
  • Work with Gloves and in Harsh Environment(Water, Oil, Dust, etc)
  • Temperature Range: -40°C to 85°C
  • Low Power(~10Hz Scan Rate): 240µA-avg

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Schematic/Block Diagram

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Design Guide

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Design Files

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TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
MSP430FR2633  Capacitive Touch MCU with 16 touch IO (64 sensors), 16KB FRAM, 4KB SRAM, 19 IO, 10-bit ADC  Microcontrollers (MCUs)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
MSP430FR2633 Download -
Download -
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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 2312 07 Mar 2016
Design files (6)
Title Type Size (KB) Date
ZIP 471 24 Mar 2016
ZIP 354 22 Mar 2016
PDF 497 22 Mar 2016
PDF 96 22 Mar 2016
PDF 51 22 Mar 2016
PDF 212 22 Mar 2016
Related Tools & Software

Reference Designs (2)

Name Part Number Tool Type
High Temperature Touch through Glass Reference Design  TIDA-00464  Reference design 
Touch Through Glass with Sharp ® LCD Reference Design  TIDA-00494  Reference design 

Software development (1)

Name Part Number Software Type
CapTIvate™ Design Center GUI for MSP430™ Capacitive Sensing MCUs  MSPCAPTDSNCTR  Application software & framework 

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