Touch on Metal Capacitive Sensing Add-on Board for the CapTIvate™ Development Kit
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Key Document


Texas Instruments MSP430™ microcontrollers (MCUs) with CapTIvate touch technology bring flexibility, innovation and reliability of capacitive touch metal inputs to applications ranging from appliances to portable electronics.

CapTIvate Metal Touch panel is an add-on board for the CapTIvate Development Kit (MSP-CAPT-FR2633) that allows designers and engineers evaluate touch on metal technology. This alternative technology to traditional capacitive touch sensors enables elegant designs of touch modules using stainless steel, aluminum alloys, brass and bronze.

MSP430 MCUs with CapTIvate technology use an alternate approach for metal overlays. The stack-up comprises of a printed circuit board with traditional capacitive touch sensors and a spacer topped with a metal overlay that is grounded. This mechanical structure forms a variable capacitor that generates changes in its value when force is applied to the buttons, sliders or wheels. The sensitivity of the CapTIvate peripheral allows detection of a few micron level deflection of the metal plate.

As an actuation force is needed to interact with the buttons, metal overlays are water proof, dirt proof and also work with thick gloves. Furthermore, based on the force and amount of deflection, designers can implement features incorporating pressure sensing or force on the buttons, sliders and wheels.

  • Capacitave Touch with Metal Overlays
  • Variable Force Touch Detection
  • Multi-Key Touch
  • 7-Segment Display Feedback
  • Water, gunk and dirt proof

What's Included

  • CAPTIATE-METAL sensor board
  • CAPTIVATE-PGMR not included; CAPTIVATE-PGMR is required for tuning and programming
  • CapTIvate MCU Board (i.e. CAPTIVATE-FR2633 or CAPTIVATE-FR2676) not included
  • MSP-CAPT-FR2633 CapTIvate MCU development kit not included

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Touch on Metal Capacitive Sensing Add-on Board for the CapTIvate™ Development Kit


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Technical documentation
Datasheet (1)
Title Type Size (KB) Date
PDF 4147 09 Dec 2019
Application notes (1)
Title Type Size (KB) Date
Multiple Files   31 Oct 2017
Design files (1)
Title Type Size (KB) Date
ZIP 988 07 Feb 2018
More literature (2)
Title Type Size (KB) Date
19 Jul 2016
PDF 38 02 Jan 2019

Hardware development (2)

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

Reference Designs (3)

Name Part Number Tool Type
Access Control Panel With Bluetooth Low Energy and Capacitive Touch Reference Design  TIDM-1004  Reference design 
MSP430FR2633 Microcontroller CapTIvate Electronic Lock and Keypad Reference Design  TIDM-CAPTIVATE-E-LOCK  Reference design 
Noise Tolerant Capacitive Touch HMI Reference Design  TIDM-CAPTOUCHEMCREF  Reference design 

TI Devices (6)

Part Number Name Product Family
MSP430FR2532  Capacitive Touch MCU with 8 touch IO (8 sensors), 8KB FRAM, 1KB SRAM, 15 IO, 10-bit ADC  Microcontrollers (MCU) 
MSP430FR2533  Capacitive Touch MCU with 16 touch IO (24 sensors), 16KB FRAM, 2KB SRAM, 19 IO, 10-bit ADC  Microcontrollers (MCU) 
MSP430FR2632  Capacitive Touch MCU with 8 touch IO (16 sensors), 8KB FRAM, 2KB SRAM, 15 IO, 10-bit ADC  Microcontrollers (MCU) 
MSP430FR2633  Capacitive Touch MCU with 16 touch IO (64 sensors), 16KB FRAM, 4KB SRAM, 19 IO, 10-bit ADC  Microcontrollers (MCU) 
MSP430FR2676  Capacitive Touch MCU with 16 touch IO (64 sensors), 64KB FRAM, 8KB SRAM, 43 IO, 12-bit ADC, 105C  Microcontrollers (MCU) 
TCA9554  Remote 8-Bit I2C and SMBus I/O Expander  I2C ICs 

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