Clock Tick TM4C123GH6PGE

Shubham Arora

Intellectual 520 points

I want to find out the time frame for tick and i calculated it like this,board running @ 20 MHz means sysclcok 50 ns .

so every 50ns comes one tick ,is my assumption correct ?

and also STCTRL is the register which stores this value ?

over 12 years ago

0 Amit Ashara over 12 years ago

TI__Guru**** 244440 points

Hello Shubham,

STCTRL is control register to enable the SysTick Module, Select the clock source and enable interrupt generation.

STRELOAD is the register which is used to write the ticker load value

Regards

Amit

0 Shubham Arora over 12 years ago in reply to Amit Ashara

Intellectual 520 points

Hi Amit,

Thanks for ans and is my first assumption correct about tick calculation ?

0 Amit Ashara over 12 years ago in reply to Shubham Arora

TI__Guru**** 244440 points

Hello Shubham,

If the Clock Source is selected as System Clock then it is correct. If the clock source is selected as PIOSC/4 then the tick time is 16MHz/4 which is 250ns

Regards

Amit

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Clock Tick TM4C123GH6PGE