MSP430FR2633 Microcontroller CapTIvate Electronic Lock and Keypad Reference Design


Design files


This reference design demonstrates an ultra-low-power capacitive touch panel based on a single MSP430™ microcontroller (MCU) with CapTIvate™ technology. The use of self and mutual capacitance technology enables multifunctional capacitive touch panels (buttons and proximity sensor) for eLocks and other applications with various human interfaces available. This reference design also demonstrates how to extend battery life by duty cycling the MSP430 CPU and switch between low-power mode and active mode.

  • 12-touch buttons with one proximity sensor for system wake up and guard key
  • 12 LEDs to indicate touch operation
  • Haptics and beep available for touch feedback and lock status
  • Ultra-low standby power consumption
  • Anti-moisture performance
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

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

TIDUC04.PDF (6231 K)

Reference design overview and verified performance test data

TIDRO65.PDF (460 K)

Detailed schematic diagram for design layout and components

TIDRO66.PDF (99 K)

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

TIDRO67.PDF (35 K)

Detailed overview of design layout for component placement

TIDRO69.ZIP (549 K)

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


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

TIDRO68.ZIP (256 K)

PCB layer plot file used for generating PCB design layout


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: PDF | HTML
Boost converters (integrated switch)

TPS61020Adjustable, 1.5-A Switch, 96% Efficient Boost Converter with Down-Mode, QFN-10

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS627453.3V-10V input, 300mA Ultra Low Iq step-down converter with VSEL and input voltage switch

Data sheet: PDF | HTML

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Technical documentation

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Type Title Date
* Design guide CapTIvate™ E-Lock Design Guide Nov. 07, 2016
White paper Enabling Noise Tolerant Capacitive Touch HMIs With MSP CapTIvate™ Technology (Rev. B) Nov. 12, 2019
Technical article Rain on this touch panel parade won’t matter PDF | HTML Nov. 28, 2016
More literature CapTIvate Technology Guide Jul. 19, 2016
White paper MSP430™ FRAM Microcontrollers With CapTIvate™ Touch Technology Oct. 14, 2015

Related design resources

Software development

MSPCAPTDSNCTR CapTIvate™ Design Center GUI for MSP430™ Capacitive Sensing MCUs

Reference designs

TIDM-CAPTIVATE-64-BUTTON 64-Button Capacitive Touch Panel With TI Microcontroller With CapTIvate Technology Reference Design TIDM-CAPTIVATE-THERMOSTAT-UI Capacitive Touch Thermostat UI with MSP MCUs Featuring CapTIvate Technology Reference Design TIDM-CAPTOUCHEMCREF Noise Tolerant Capacitive Touch HMI Reference Design

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