TIDM-1021

Liquid Tolerant Capacitive Touch Keypad Reference Design

TIDM-1021

Design files

Overview

The Liquid Tolerant Capacitive Touch Keypad Design (TIDM-1021) is a reference design for implementing liquid tolerant capacitive touch human-machine interfaces (HMIs).  It integrates TI's MSP430FR2633 microcontroller (MCU) featuring high performance CapTIvate™ touch technology with an optimized sensor layout design and software.  This reference design demonstrates how to design capacitive touch hardware and software that can work reliably under liquid influence and pass challenging tests for conductive noise immunity.

Features
  • MSP430™ CapTIvate  MCU for Liquid-Tolerant Capacitive-Touch Sensing
  • Advanced Human Machine Interface Design with 12-Button Keypad
  • 12 LEDs Driven by MSP430  CapTIvate MCU for Backlighting
  • Passes IEC 61000-4-6 Conducted Noise Immunity Test at 3 Vrms Stress Level
  • No False Touch Detection and Accurately Detect Touched Button under IPX5 Rating Test with AC Power

Design files & products

Design files

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

TIDUE90.PDF (2273 K)

Reference design overview and verified performance test data

TIDRWU6.PDF (130 K)

Detailed schematic diagram for design layout and components

TIDRWU7.PDF (227 K)

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

TIDRWU8.PDF (104 K)

Detailed overview of design layout for component placement

TIDRWV0.ZIP (433 K)

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

TIDCET5.ZIP (452 K)

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

TIDRWU9.PDF (829 K)

PCB layer plot file used for generating PCB design layout

Products

Includes TI products in the design and potential alternatives.

MSP430 microcontrollers

MSP430FR2533Capacitive Touch MCU with 16 touch IO (24 sensors), 16KB FRAM, 2KB SRAM, 19 IO, 10-bit ADC

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

TIDM-1021 CapTIvate-LiquidTolerant Software – TIDCET6.ZIP (1327 K)

Technical documentation

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Type Title Date
* Design guide Liquid Tolerant Capacitive Touch Keypad Reference Design Jul. 31, 2018
User guides CapTIvate™ Technology Guide Jan. 17, 2018

Related design resources

Software development

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

Reference designs

REFERENCE DESIGN
TIDM-CAPTOUCHEMCREF Noise Tolerant Capacitive Touch HMI Reference Design

Support & training

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