Become a subscriber (Free)

Join 29,000 other subscribers to receive subscriber sale discounts and other free resources.
:
:
Don't worry -- youre-mail address is totally secure. I promise to use it only to send you MicroZine.

PIC Timer 2 calculator

With the PIC Timer 2 calculator you can see the resulting frequencies and periods when you change four pieces of information. :

  • Frequency (the default is 4MHz).
  • The Prescaler ratio.
  • Timer 2 period register value.
  • The Postscaler ratio.

Into page : PIC Timer intro (details on installing TCL)
Jump to PIC Timer 0 calculator.
Jump to PIC Timer 1 calculator.

Donwload your Calculators

To download these free calculators signup here:

Enter your details to get the Download Link
and in addition, get the microcontroller newsletter:



(Your email is safe it will never be sold or rented).
You will get the calculators plus free souce code from this site.

Note: Check your email for the project code download link.

PICTimer 2  Block diagram [from 33023a.pdf]
PIC Timer 1 block diagram 33023a.pdf

PICTimer 2 registers 
[from 33023a.pdf]
PIC timer 2 registers

Three sliders let you change the values by dragging a control up and down on the screen and the resulting changes are immediately shown in this page.   The first is for the prescaler, the middle is for the Period register and the last is for the postscaler.

Note: Setting of timer 2 value is not shown as the intended use of the timer is for making it easy to control the period of TMR2 using the period register - taking away the need to service interrupts in order to generate a specific frequency.

All you do is set the Prescaler and Postscaler and set the period register PR2.  For example if you set Prescaler=1:1 and Postscaler=1:1 and PR2=99.  The output period of the  module would be 100us i.e. a Timer 2 interrupt every 100us.

Note: Timer 2 counter is reset on the next count after matching PR2 (this is why you need PR2=99 and not 100).

The important point is that there will be no need to set any registers within the interrupt (as you have to do with the other timers).  This is why it is used as the baud rate generator for the USARTs - it requires no processing.

Screen shot of PIC Timer 2 calculator in action

PIC Timer 2 calculator




Jump from PIC Timer 2 calculator to
Best-Microcontroller-Projects Home Page


New! Comments

Have your say about what you just read! Leave me a comment in the box below.



Privacy Policy | Contact | About Me

Site Map | Terms of Use



Visit our Facebook Page:

   Click Here


  1. How to use the ADXL345 for movement sensing and more.

    With the ADXL345 acellerometer you can detect up to 16g! You can also find out how to use it for tap detection and more.

    Read more

  2. How the HMC5883L 3-axis digital magentomter works

    HMC5883L - How make a digital compass, Find out the differences between the HMC5883L and the QMC5883L and whether they are compatible.

    Read more

  3. ESP8266 Arduino IDE setup.

    Easily use an ESP8266 with the Arduino IDE and program your first sketch into the ESP8266

    Read more

  4. How to use the MCP4725, a versatile and tiny (SOT-23-6) analogue output device

    The MCP4725 chip is a 12 bit DAC with memory that outputs voltage that you can use for many dfferent purposes. Find out what they are in this page.

    Read more

  5. PCF8591: An 8 bit ADC you can easily connect using I2C

    PCF8591: A four input ADC with single DAC. How good is this 8 bit ADC, and should you use it in your next project?

    Read more

  6. How to use an arduno Nano as an ISP (In System Programmer)

    Arduino Nano ISP: How to program an ATmega328P using an Arduino Nano as the ISP programmmer. One common problem: Programming a sketch into the chip without a reset control - solved here.

    Read more



Readers Comments

"I wanted to thank
you so so so much
for all the information
you have provided in
your site it's

SUPERB and FANTASTIC."

- Ranish Pottath

"This site really is
the best and my favorite.
I find here many useful
projects and tips."

- Milan

bursach<at>gmail.com<

"Awesome site,
very, very easy and nice
to navigate!"


- Matt
matt_tr<at>
wolf359.cjb.net


Learn Microcontrollers

"Interested in
Microcontrollers?"

Sign up for The
Free 7 day guide:

FREE GUIDE : CLICK HERE


"I am a newbie to PIC
and I wanted to say
 how great your
site has been for me."


- Dave

de_scott<at>bellsouth.net

"Your site is a great
and perfect work.
congratulations."


- Suresh

integratredinfosys<at>
yahoo.com

"I couldn't find the correct
words to define
yourweb site.

Very useful, uncovered,
honest and clear.

Thanks so much for
your time and works.
Regards."


- Anon

Back to Top