Touch Through Glass with Sharp ® LCD Reference Design
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.

Description & Features

Technical documentation

Support & Training

Order Now

See the Important Notice and Disclaimer covering reference designs and other TI resources.

Key Document


Human machine interface (HMI) is an essential part of process plants because it is one of the major ways through which humans and machines interact.  The TIDA-00494 reference design offers an HMI solution for harsh and hazardous area applications. In process plants, operators are required to interact with keypads for programming functions, encapsulated in explosive proof screw-on metallic enclosures with thick glass windows for local readouts through a liquid-crystal display (LCD).

This TI Design uses MSP430™ microcontrollers (MCUs) with TI CapTIvate™ technology which allows the operator to interact with the keypad without needing to open the enclosure, saving time by avoiding work permit or plant shutdown. The operator can read results from a LCD and get notified with a light-emitting diode (LED) with only one integrated circuit (IC).


  • Single and multistep button touch
  • Four robust buttons option implemented
  • Finger detection through 10mm thick glass
  • Four LEDs and ultra-low power LCD as feedback
  • Work with gloves and in harsh environment(water, oil, dust, etc)
  • Temperature Range: -40°C to 85°C

See the Important Notice and Disclaimer covering reference designs and other TI resources.


Schematic/Block Diagram

Quickly understand overall system functionality.

Download Schematic

Design Guide

Get results faster with test and simulation data that's been verified.

Download Design Guide

Design Files

Download ready-to-use system files to speed your design process. Get Viewer.

Download Design Files

TI Devices (1)

Order samples, get tools and find more information on the TI products in this reference design.

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 (MCU)  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

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

Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.

Step 1: Download and install the free download.

Step 2: Download the Symbol and Footprint from the CAD.bxl file table.

Technical documentation

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 4531 29 May 2019
Design files (6)
Title Type Size (KB) Date
ZIP 255 22 Jun 2016
ZIP 537 22 Jun 2016
PDF 709 22 Jun 2016
PDF 179 22 Jun 2016
PDF 70 22 Jun 2016
PDF 327 22 Jun 2016
More literature (2)
Title Type Size (KB) Date
PDF 70 08 Nov 2018
PDF 65 14 Jun 2017
Related Tools & Software

Reference Designs (1)

Name Part Number Tool Type
Low-Power Touch Through Glass Reference Design  TIDA-00343  Reference design 

Hardware development (3)

Name Part Number Tool Type
MSP CapTIvate MCU Development Kit  MSP-CAPT-FR2633  Evaluation boards 
Memory LCD BoosterPack  430BOOST-SHARP96  Evaluation boards 
CapTIvate™ Design Center GUI for MSP430™ Capacitive Sensing MCUs  MSPCAPTDSNCTR  GUIs for evaluation modules (EVM) 

Software development (1)

Support & training

Search our extensive online knowledge base where millions of technical questions and answers are available 24/7.

Search answers from TI experts

Content is provided 'AS IS' by the respective TI and Community contributors and does not constitute TI specifications.
See terms of use.

If you have questions about quality, packaging, or ordering TI products visit our Support page.

Technical articles