crystal need

xjackal

New Member

• Oct 10, 2003

• #1

which crystal do think i should buy for my p16f84a?

 

3dluvr

Member

• Oct 10, 2003

• #2

Look at the label on the PIC itself... 16F84A-4 = 4MHz, 16F84A-20=20MHz..

 

T

tommyc2000

New Member

• Oct 10, 2003

• #3

3333

depands on the timing of your application :wink:

 

Exo

Active Member

• Oct 11, 2003

• #4

The max. speed the pic can handle is printed on top, like 3dluvr said. But keep in mind that the pic will use more power if it runs faster. So for battery powered devices you shouldn't run the pic faster then the application requires.

 

xjackal

New Member

• Oct 11, 2003

• #5

thanks
it writes 16f84a-04

 

Exo

Active Member

• Oct 11, 2003

• #6

Then buy a 4Mhz crystal, handy for timed programming as at 4Mhz 1 instruction will take exactly 1µs.