Introduction to Timers

  • Brock J. LaMeres


This chapter introduces the concept of a timer to independently track and/or trigger events based on the time elapsed [1–3]. A timer uses an independent, free-running, binary counter to track the passage of time. Timers are a peripheral to the CPU, which allows the CPU to handle other tasks while the timer runs separately. Timers can trigger interrupts that are then serviced by the CPU through routines. This chapter presents the concept of a timer and then looks at the details of the timers available on the MSP430FR2355 MCU.


  1. 1.
    Texas Instruments Inc. (2019) MSP430FR4xx and MSP430FR2xx family User’s guide. Literature Number: SLAU445I, October 2014 – Revised March 2019. Retrieved from
  2. 2.
    Texas Instruments Inc. (2019) MSP430FR235x, MSP430FR215x mixed-signal microcontrollers [device-specific data sheet]. Literature Number: SLASEC4D, May 2018 – Revised December 2019. Retrieved from:
  3. 3.
    Texas Instruments Inc. (2019) MSP430FR235x LaunchPad™ development kit user’s guide. Literature Number: SLAU680, May 2018. Retrieved from:

Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Brock J. LaMeres
    • 1
  1. 1.BozemanUSA

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