AN557 fra Microchip

Oct 27, 2004 2 Replies

Her er et udklip fra denne AP - er der ikke noget galt her ?



;The clock speed is 4.096Mhz. Dividing internal clk. by a 32 prescaler, ;the TMR0 will be incremented every 31.25uS. If TMR0 is preloaded ;with 96, it will take (256-96)*31.25uS to overflow i.e. 5mS. ;end result is that we get a TMR0 interrupt every 5mS.



Hvis ikke - er der så én, som liiige vil give en forklaring på tallene ?



Mvh KS


Nu er jeg ikke PIC ekspert, men er den interne clock ikke extern clock/4, for så passer tallene da udemærket.

Alt passer, idet den externe clock (xtal frekvensen) deles med 4 til at give den interne clock

Bo //

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required