MSP430 MCU with CapTIvate technology - the lowest power, most noise-immune capacitive touch - MSP430FR2633


MSP430 MCU with CapTIvate technology - the lowest power, most noise-immune capacitive touch


To learn more about MSP MCUs featuring CapTIvate™ technology, read the CapTIvate Technology Guide.


The MSP430FR263x and MSP430FR253x are FRAM-based ultra-low-power MSP microcontrollers that feature CapTIvate touch technology for buttons, sliders, wheels (BSW), and proximity applications. CapTIvate technology provides the highest resolution capacitive-touch solution in the market with high reliability and noise immunity at the lowest power. CapTIvate technology supports concurrent self-capacitance and mutual-capacitance electrodes on the same design for maximum flexibility. Using the CapTIvate Design Center, engineers can quickly develop BSW applications with an easy-to-use GUI.

The TI MSP family of low-power microcontrollers consists of several devices that feature 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 typically in less than 10 µs.

System-level ESD protection must be applied in compliance with the device-level ESD specification to prevent electrical overstress or disturbing of data or code memory. See the application report MSP430 System-Level ESD Considerations (SLAA530) for more information.


  • Embedded Microcontroller
    • 16-Bit RISC Architecture
    • Clock Supports Frequencies up to 16 MHz
    • Wide Supply Voltage Range From 1.8 V to 3.6 V (Minimum supply voltage is restricted by SVS levels)
  • Optimized Ultra-Low-Power Modes
    • Active Mode: 126 µA/MHz (Typical)
    • Standby
      • 1.7 µA/Button Average (Typical) (16 Self-Capacitance Buttons, 8-Hz Scanning)
      • 1.7 µA/Button Average (Typical) (64 Mutual-Capacitance Buttons, 8-Hz Scanning)
    • LPM3.5 Real-Time Clock (RTC) Counter With 32768-Hz Crystal: 770 nA (Typical)
    • Shutdown (LPM4.5): 15 nA (Typical)
  • Low-Power Ferroelectric RAM (FRAM)
    • Up to 15.5KB 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
    • High FRAM-to-SRAM Ratio, up to 4:1
  • Intelligent Digital Peripherals
    • Four 16-Bit Timers
      • Two Timers With Three Capture/Compare Registers Each (Timer_A3)
      • Two Timers With Two Capture/Compare Registers Each (Timer_A2)
    • One 16-Bit Timer Associated With CapTIvate Technology
    • One 16-Bit Counter-Only RTC
    • 16-Bit Cyclic Redundancy Check (CRC)
  • Enhanced Serial Communications
    • Two Enhanced Universal Serial Communication Interfaces (eUSCI_A) Support UART, IrDA, and SPI
    • One eUSCI (eUSCI_B) Supports SPI and I2C
  • High-Performance Analog
    • 8-Channel 10-Bit Analog-to-Digital Converter (ADC)
      • Internal 1.5-V Reference
      • Sample-and-Hold 200 ksps
    • CapTIvate Technology – Capacitive Touch
      • Performance
        • Fast Electrode Scanning With Four Simultaneous Scans
        • Support for High-Resolution Sliders With >1024 Points
        • 30-cm Proximity Sensing
      • Reliability
        • Increased Immunity to Power Line, RF, and Other Environmental Noise
        • Built-in Spread Spectrum, Automatic Tuning, Noise Filtering, and Debouncing Algorithms
        • Enables 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 is Asleep
        • 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
  • Clock System (CS)
    • On-Chip 32-kHz RC Oscillator (REFO)
    • 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
    • Total of 19 I/Os on TSSOP-32 Package
    • 16 Interrupt Pins (P1 and P2) Can Wake MCU From Low-Power Modes
  • Development Tools and Software
    • Ease-of-Use Ecosystem
      • CapTIvate Design Center – Code Generation, Customizable GUI, Real-Time Tuning
    • Free Professional Development Environments
  • 12-KB ROM Library Includes CapTIvate Touch Libraries and Driver Libraries
  • Family Members
    • MSP430FR2633: 15KB of Program FRAM + 512B of Information FRAM + 4KB of RAM
      up to 16 Self-Capacitive and 64 Mutual-Capacitive Sensors
    • MSP430FR2533: 15KB of Program FRAM + 512B of Information FRAM + 2KB of RAM
      up to 16 Self-Capacitive or 16 Mutual-Capacitive Sensors
    • MSP430FR2632: 8KB of Program FRAM + 512B of Information FRAM + 2KB of RAM
      up to 8 Self-Capacitive or 16 Mutual-Capacitive Sensors
    • MSP430FR2532: 8KB of Program FRAM + 512B of Information FRAM + 1KB of RAM
      up to 8 Self-Capacitive or 8 Mutual-Capacitive Sensors
  • Package Options
    • 32-Pin: VQFN (RHB)
    • 32-Pin: TSSOP (DA)
    • 24-Pin: VQFN (RGE)
  • For Complete Module Descriptions, See the MSP430FR4xx and MSP430FR2xx Family User's Guide (SLAU445)

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Parametrics Compare all products in Capacitive Touch MCUs

Special I/O
Frequency (MHz)
Non-volatile Memory (KB)
Comparators (Inputs)
Timers - 16-bit
Timers - 32-bit
Active Power (uA/MHz)
Standby Power (LPM3-uA)
Wakeup Time (us)
Additional Features
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
MSP430FR2633 MSP430FR2532 MSP430FR2533 MSP430FR2632
CapTIvate Touch I/O    CapTIvate Touch I/O    CapTIvate Touch I/O    CapTIvate Touch I/O   
MSP430    MSP430    MSP430    MSP430   
16    16    16    16   
16    8    16    8   
4    1    2    2   
19    15    19    15   
1    1    1    1   
2    1    2    2   
2    2    2    2   
0    0    0    0   
ADC10 - 8ch    ADC10 - 8ch    ADC10 - 8ch    ADC10 - 8ch   
0    0    0    0   
4    4    4    4   
0    0    0    0   
32x32    32x32    32x32    32x32   
N/A    N/A    N/A    N/A   
1.8    1.8    1.8    1.8   
3.6    3.6    3.6    3.6   
126    126    126    126   
1.5    1.5    1.5    1.5   
10    10    10    10   
Real-Time Clock
Temp Sensor
Brown Out Reset   
Real-Time Clock
Temp Sensor
Brown Out Reset   
Real-Time Clock
Temp Sensor
Brown Out Reset   
Real-Time Clock
Temp Sensor
Brown Out Reset   
-40 to 85    -40 to 85    -40 to 85    -40 to 85   
See datasheet (DSBGA)    24VQFN: 16 mm2: 4 x 4(VQFN)    32VQFN: 25 mm2: 5 x 5(VQFN)
32TSSOP: 89 mm2: 8.1 x 11(TSSOP)   
See datasheet (DSBGA)   
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