TIDA-00494

Touch Through Glass with Sharp ® LCD Reference Design

TIDA-00494

Design files

Overview

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.  TIDA-00494 offers an HMI design 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 reference 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).

 

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

Design files & products

Design files

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

TIDUBZ4B.PDF (4531 K)

Reference design overview and verified performance test data

TIDRMG4.PDF (327 K)

Detailed schematic diagram for design layout and components

TIDRMG5.PDF (70 K)

Complete listing of design components, reference designators, and manufacturers/part numbers

TIDRMG6.PDF (179 K)

Detailed overview of design layout for component placement

TIDRMG8.ZIP (537 K)

Files used for 3D models or 2D drawings of IC components

TIDCCC3.ZIP (255 K)

Design file that contains information on physical board layer of design PCB

TIDRMG7.PDF (709 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

MSP430 microcontrollers

MSP430FR2633Capacitive Touch MCU with 16 touch IO (64 sensors), 16KB FRAM, 4KB SRAM, 19 IO, 10-bit ADC

Data sheet document-pdfAcrobat PDF open-in-new HTML

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Software

Support software

TIDA-00494 Software – TIDCCF8.ZIP (1326 K)

Technical documentation

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Type Title Date
* Design guide Touch Through Glass With Sharp® LCD Design Guide (Rev. B) May 29, 2019
Technical article Selecting an airtight approach to water and dust proof buttons Jul. 19, 2018
Technical article Engineering magic: Touch through thick glass with LEDs and LCD Aug. 18, 2016

Related design resources

Hardware development

EVALUATION BOARD
430BOOST-SHARP96 Memory LCD BoosterPack

Software development

APPLICATION SOFTWARE & FRAMEWORK
MSPCAPTDSNCTR CapTIvate™ Design Center GUI for MSP430™ Capacitive Sensing MCUs

Reference designs

REFERENCE DESIGN
TIDA-00343 Low-Power Touch Through Glass Reference Design

Support & training

TI E2E™ forums with technical support from TI engineers

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