Pic 16f877 Timer1 prescalar, what does it do??

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Anuradha1

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Hello all,

An some one clearly explain what does timer1 prescalar do?
According to the data sheet prescalars can be used by setting the T1CIN register.

What I really wants to know the different I can achieve when am running without prescalar and when am using prescalar 1:4 etc
 

It slows the timer down. For example, in timer mode, timer1 is incremented with every clock cycle if the prescaler is 1:1. But when the prescaler is 1:8, it is incremented with each 8th cycle.

The postscaler on the other hand, which can be used with timer2, sets the number of timer overflows before an interrupt can occur. 1:1 postscaler means every timer overflow triggers the timer2 interrupt where 1:2 means every 2nd overflow triggers the timer2 interrupt.
 

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    Anuradha1

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