MSP430FR2675 CapTIvate™ capacitive touch sensing microcontroller with 32KB FRAM, 6KB SRAM, 43 IO, 12-bit ADC |

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CapTIvate™ capacitive touch sensing microcontroller with 32KB FRAM, 6KB SRAM, 43 IO, 12-bit ADC



The MSP430FR267x is an ultra-low-power MSP430™ microcontroller for capacitive touch sensing that feature CapTIvate touch technology for buttons, slides, wheel and proximity applications. MSP430 MCUs with CapTIvate technology provide the most integrated and autonomous capacitive-touch solution in the market with high reliability and noise immunity at the lowest power. TI’s capacitive touch technology supports concurrent self-capacitance and mutual-capacitance electrodes on the same design for maximum flexibility. MSP430 MCUs with CapTIvate technology operate through thick glass, plastic enclosures, metal, and wood with operation in harsh environments including wet, greasy, and dirty environments.

TI capacitive touch sensing MSP430 MCUs are supported by an extensive hardware and software ecosystem with reference designs and code examples to get your design started quickly. Development kits include the MSP-CAPT-FR2633 CapTIvate Technology Development Kit. TI also provides free software including the CapTIvate Design Center, where engineers can quickly develop applications with an easy-to-use GUI and MSP430Ware™ software, and comprehensive documentation with the CapTIvate Technology Guide.

The TI MSP430 family of low-power microcontrollers consists of devices with different sets of peripherals targeted for various applications. The architecture, combined with extensive low-power modes, is optimized to achieve extended battery life in portable measurement applications. The MCU features a powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows the MCU to wake up from low-power modes to active mode in less than 10 µs (typical).

For complete module descriptions, see the MSP430FR4xx and MSP430FR2xx Family User’s Guide.


  • CapTIvate™ technology – capacitive touch
    • Performance
      • Fast electrode scanning with four simultaneous scans
      • Support for high-resolution sliders with up to 1024 points
      • Proximity sensing
    • Reliability
      • Increased immunity to power line, RF, and other environmental noise
      • Built-in spread spectrum, automatic tuning, noise filtering, and debouncing algorithms
      • Enable reliable touch solutions with 10-V RMS common-mode noise, 4-kV electrical fast transients, and 15-kV electrostatic discharge, allowing for IEC‑61000-4-6, IEC-61000-4-4, and IEC‑61000-4-2 compliance
      • Reduced RF emissions to simplify electrical designs
      • Support for metal touch and water rejection designs
    • Flexibility
    • Low power
      • <0.9 µA/button in wake-on-touch mode, where capacitive measurement and touch detection is done by hardware state machine while CPU is asleep
      • Wake-on-touch state machine allows electrode scanning while CPU sleeps
      • Hardware acceleration for environmental compensation, filtering, and threshold detection
    • Ease of use
      • CapTIvate Design Center PC GUI lets engineers design and tune capacitive buttons in real time without having to write code
      • CapTIvate software library in ROM provides ample FRAM for customer application
  • Embedded microcontroller
    • 16-bit RISC architecture
    • Clock supports frequencies up to 16 MHz
    • Wide supply voltage range from 3.6 V down to 1.8 V (minimum supply voltage is restricted by SVS levels, see the SVS Specifications)
  • Optimized ultra-low-power modes
    • Active mode: 135 µA/MHz (Typical)
    • Standby: <5 µA wake-on-touch with four sensors
    • Shutdown (LPM4.5): 37 nA without SVS
  • Low-power ferroelectric RAM (FRAM)
    • Up to 64KB of nonvolatile memory
    • Built-in error correction code (ECC)
    • Configurable write protection
    • Unified memory of program, constants, and storage
    • 1015 write cycle endurance
    • Radiation resistant and nonmagnetic
  • Intelligent digital peripherals
    • Four 16-bit timers with three capture/compare registers each (Timer_A3)
    • One 16-bit timer with seven capture/compare registers (Timer_B7)
    • One 16-bit timer associated with CapTIvate technology
    • One 16-bit counter-only RTC
    • 16-bit cyclic redundancy check (CRC)
  • Enhanced serial communications with support for pin remap feature
    • Two eUSCI_A supports UART, IrDA, and SPI
    • Two eUSCI_B supports SPI and I2C
  • High-performance analog
    • One 12-bit analog-to-digital converter (ADC) with up to 12 channels
      • Internal shared reference (1.5, 2.0, or 2.5 V)
      • Sample-and-hold 200 ksps
    • One enhanced comparator (eCOMP)
      • Integrated 6-bit DAC as reference voltage
      • Programmable hysteresis
      • Configurable high-power and low-power modes
  • Clock system (CS)
    • On-chip 32-kHz RC oscillator (REFO) with 1 µA support
    • On-chip 16-MHz digitally controlled oscillator (DCO) with frequency-locked loop (FLL)
      • ±1% accuracy with on-chip reference at room temperature
    • On-chip very low-frequency 10-kHz oscillator (VLO)
    • On-chip high-frequency modulation oscillator (MODOSC)
    • External 32-kHz crystal oscillator (LFXT)
    • Programmable MCLK prescalar of 1 to 128
    • SMCLK derived from MCLK with programmable prescalar of 1, 2, 4, or 8
  • General input/output and pin functionality
    • 43 I/Os on LQFP-48 package
    • 43 interrupt pins on all GPIOs can wake MCU from low-power modes
  • Development tools and software
  • 16KB ROM library includes CapTIvate touch libraries and driver libraries
  • Family members (also see Device Comparison)
    • MSP430FR2676: 64KB of program FRAM, 512B of information FRAM, 8KB of RAM
      supports up to 16 self-capacitive and 64 mutual-capacitive sensors
    • MSP430FR2675: 32KB of program FRAM, 512B of information FRAM, 6KB of RAM
      supports up to 16 self-capacitive and 64 mutual-capacitive sensors
  • Package options
    • 48-pin: LQFP (PT)
    • 40-pin: VQFN (RHA)
    • 32-pin: VQFN (RHB)

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Part number Order Features Non-volatile memory (kB) RAM (KB) ADC ADC: channels (#) GPIO pins (#) I2C SPI UART Comparator channels (#) Package Group Approx. price (US$) Timers - 16-bit Bootloader (BSL) Special I/O Operating temperature range (C) Package size: mm2:W x L (PKG) Rating
MSP430FR2675 Order now Real-Time Clock     32     6     12-bit SAR     12     43     2     4     2     4     LQFP | 48
VQFN | 32
VQFN | 40    
1.45 | 1ku     5     I2C
CapTIvate Touch I/O     -40 to 105     48LQFP: 81 mm2: 9 x 9 (LQFP | 48)
32VQFN: 25 mm2: 5 x 5 (VQFN | 32)
40VQFN: 36 mm2: 6 x 6 (VQFN | 40)    
MSP430FR2512 Order now Real-Time Clock     8     2     10-bit SAR     8     15     1     2     1     0     TSSOP | 16
VQFN | 20    
0.67 | 1ku     2     I2C
CapTIvate Touch I/O     -40 to 85     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20)    
MSP430FR2522 Order now Real-Time Clock     8     2     10-bit SAR     8     15     1     2     1     0     TSSOP | 16
VQFN | 20    
0.72 | 1ku     2     I2C
CapTIvate Touch I/O     -40 to 85     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
20VQFN: 16 mm2: 3.5 x 4.5 (VQFN | 20)    
MSP430FR2533 Order now Real-Time Clock     16     2     10-bit SAR     8     19     1     2     2     0     TSSOP | 32
VQFN | 32    
1.04 | 1ku     4