the pic micro controller have internal oscillator but why we use external osci

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the pic micro controller have internal oscillator but why
we use external oscillator

Question Posted / p.mgr

6 Answers
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the pic micro controller have internal oscillator but why we use external oscillator..

Answer / ravi pailoor

The Internal oscillator is accurate to 5% where as the
external crystal oscillator can be more accurate. Crystal
oscillator is used for precise timing application. The newer
PICmicro have internal oscillator that are 1% accurate.

The internal oscillator is typically 4 or 8 MHZ maximum. If
you need higher frequency, say 10 MHz, then the external
oscillator need to be used.

Is This Answer Correct ?

38 Yes

6 No

the pic micro controller have internal oscillator but why we use external oscillator..

Answer / arslan buttar

The internal oscillator is typically 4 or 8 MHZ maximum. If
you need higher frequency, say 10 MHz, then the external
oscillator need to be used.

Is This Answer Correct ?

22 Yes

5 No

the pic micro controller have internal oscillator but why we use external oscillator..

Answer / tddddd

external oscillator is more stable than internal.
that is the reason.
in 18f series, we can use up to 64khz internal
oscillator..so that mentioned in last post is not completely
correct.

Is This Answer Correct ?

5 Yes

5 No

the pic micro controller have internal oscillator but why we use external oscillator..

Answer / shankar

internal oscillator uses resistor and capacitor which may be affected by temperature so that it could not provide stable frequency also its limited to 8mhz. where as external oscillator(crystal) are stable and not limited to 8mhz .

Is This Answer Correct ?

1 Yes

2 No

the pic micro controller have internal oscillator but why we use external oscillator..

Answer / shantan kumar.r

PIC microcontroller has an internal oscillator,but has no
self excitation capability. So we exite it by a crystal
oscillator outside.

Is This Answer Correct ?

21 Yes

24 No

the pic micro controller have internal oscillator but why we use external oscillator..

Answer / venkatraman.n

we interface with one transmitter and reciver internal
oscillator is enough but we communicate with more than two
or three transmitter and reciver we need external oscillator

Is This Answer Correct ?

6 Yes

19 No

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