question about microcontroler oscillator

Pieter wrote:

Eeyore wrote:
JW wrote:
Eeyore wrote

Can you provide an example of any IC that has an internal crystal ?

Sure:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4984

Whilst the data sheet doesn't make it obvious, that's a HYBRID, not an IC.


So what?
Click to expand...
It's not an **IC**.


The point is that some parts have internal oscillators, not
just the inverters etc for external crystals, resonators or RC's.
Microchip etc.
Click to expand...
Yes I know about internal RC oscillators. You were talking about crystal
oscillators. There is NO microprocessor or microcontroller with an internal
crystal oscillator so why did you feel the need to introduce a complete
irrelevancy ?

Graham
 
On Wed, 31 Oct 2007 11:17:35 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

Pieter wrote:

Check the decoupling capacitors.

I'd love to know how he's going to CHECK capacitors !
Click to expand...
---
http://www.google.com/search?hl=en&q=capacitor+tester
---

You certainly say somedaft things.
Click to expand...
---
PKB, LOL!
---

He might REPLACE any supply decoupling caps that are electrolytic types for
sure. Age is likely to have taken their toll on them.
Click to expand...
---
Test 'em first.

Why fix it if it ain't broke?


--
JF
 
On Wed, 31 Oct 2007 14:36:26 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

Pieter wrote:

Eeyore wrote:
JW wrote:
Eeyore wrote

Can you provide an example of any IC that has an internal crystal ?

Sure:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4984

Whilst the data sheet doesn't make it obvious, that's a HYBRID, not an IC.


So what?

It's not an **IC**.


The point is that some parts have internal oscillators, not
just the inverters etc for external crystals, resonators or RC's.
Microchip etc.

Yes I know about internal RC oscillators. You were talking about crystal
oscillators. There is NO microprocessor or microcontroller with an internal
crystal oscillator so why did you feel the need to introduce a complete
irrelevancy ?

Graham
Click to expand...
?????????????????????????
 
On Tue, 30 Oct 2007 22:59:20 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

Pieter wrote:

Eeyore wrote:
Pieter wrote:

The 8051 does not have an internal oscillator.

What do you mean ? It has an inverter stage designed for clock oscillator use
connected to pins xtal1 and xtal2.


No internal crystal. It has the inverter etc, but always needs an
external crystal. Of course you can also feed it with an external
oscillator.

Can you provide an example of any IC that has an internal crystal ?

Graham
Click to expand...
I wrote that it does NOT have an internal crystal, like most other
parts. But the 8051 also has no internal RC oscillator. It needs
external parts.

Pieter
 
Pieter wrote:

Eeyore wrote:
Pieter wrote:
Eeyore wrote:
Pieter wrote:

The 8051 does not have an internal oscillator.

What do you mean ? It has an inverter stage designed for clock oscillator use
connected to pins xtal1 and xtal2.


No internal crystal. It has the inverter etc, but always needs an
external crystal. Of course you can also feed it with an external
oscillator.

Can you provide an example of any IC that has an internal crystal ?


I wrote that it does NOT have an internal crystal, like most other
parts. But the 8051 also has no internal RC oscillator. It needs
external parts.
Click to expand...
It has the required internal active parts for either a crystal or ceramic resonator
clock oscillator. That's all that matters.

The OP has no interest in hypothetical RC oscillators that don't exist in standard
8051s. Stop talking rubbish.

Graham
 
Jamie wrote:

Eeyore wrote:
Pieter wrote:

Check the decoupling capacitors.

I'd love to know how he's going to CHECK capacitors ! You certainly say some
daft things.

He might REPLACE any supply decoupling caps that are electrolytic types for
sure. Age is likely to have taken their toll on them.

Oh, I see it's ok now to use the phrase "Decoupling cap"
you back pedaling turd.
Click to expand...
A decoupling cap is the correct name for caps used across the power supply. The
output cap of an amplifier is another matter entirely you jumped-up stupid jerk.

Graham
 
On Wed, 31 Oct 2007 23:46:23 +0100, Pieter
<dit3_werkt_ook_niet@hotmail.com> wrote:

On Wed, 31 Oct 2007 14:36:26 +0000, Eeyore
rabbitsfriendsandrelations@hotmail.com> wrote:



Pieter wrote:

Eeyore wrote:
JW wrote:
Eeyore wrote

Can you provide an example of any IC that has an internal crystal ?

Sure:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/4984

Whilst the data sheet doesn't make it obvious, that's a HYBRID, not an IC.


So what?

It's not an **IC**.


The point is that some parts have internal oscillators, not
just the inverters etc for external crystals, resonators or RC's.
Microchip etc.

Yes I know about internal RC oscillators. You were talking about crystal
oscillators. There is NO microprocessor or microcontroller with an internal
crystal oscillator so why did you feel the need to introduce a complete
irrelevancy ?

Graham

?????????????????????????
Click to expand...
---
Pay no attention to the Donkey troll.

One of his favorite tricks is to try to derail a discussion by
focusing on irrelevant minutiae instead of trying to find
convergence.


--
JF
 
Eeyore wrote:
Pieter wrote:


Check the decoupling capacitors.


I'd love to know how he's going to CHECK capacitors ! You certainly say some
daft things.

He might REPLACE any supply decoupling caps that are electrolytic types for
sure. Age is likely to have taken their toll on them.

Graham

Oh, I see it's ok now to use the phrase "Decoupling cap"
Click to expand...
you back pedaling turd.

And don't bother to reply, because it'll just be more
back pedaling..


--
"I'm never wrong, once i thought i was, but was mistaken"
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5
 
Eeyore wrote:

Jamie wrote:


Eeyore wrote:

Pieter wrote:


Check the decoupling capacitors.

I'd love to know how he's going to CHECK capacitors ! You certainly say some
daft things.

He might REPLACE any supply decoupling caps that are electrolytic types for
sure. Age is likely to have taken their toll on them.

Oh, I see it's ok now to use the phrase "Decoupling cap"
you back pedaling turd.


A decoupling cap is the correct name for caps used across the power supply. The
output cap of an amplifier is another matter entirely you jumped-up stupid jerk.

Graham

You fringing turd. Just as I suspected. You back pedaling idiot.
Click to expand...

You don't know the difference between shit and shanghola.


--
"I'm never wrong, once i thought i was, but was mistaken"
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5
 
John Fields wrote:

Pay no attention to the Donkey troll.

One of his favorite tricks is to try to derail a discussion by
focusing on irrelevant minutiae
Click to expand...
Pieter is the one discussing irrelevancies such as the non-existent RC oscillator
in a standard 8051.

The OP made it clear he's talking about a crystal/resonator based clock oscilaltor
not an RC type.

Please THINK !

Graham
 
Jamie wrote:

Eeyore wrote:
Jamie wrote:
Eeyore wrote:
Pieter wrote:

Check the decoupling capacitors.

I'd love to know how he's going to CHECK capacitors ! You certainly say some
daft things.

He might REPLACE any supply decoupling caps that are electrolytic types for
sure. Age is likely to have taken their toll on them.

Oh, I see it's ok now to use the phrase "Decoupling cap"
you back pedaling turd.


A decoupling cap is the correct name for caps used across the power supply. The
output cap of an amplifier is another matter entirely you jumped-up stupid jerk.

Graham

You fringing turd. Just as I suspected. You back pedaling idiot.

You don't know the difference between shit and shanghola.
Click to expand...
YOU LYING PIECE OF SHIT
 
Eeyore wrote:

John Fields wrote:


Pay no attention to the Donkey troll.

One of his favorite tricks is to try to derail a discussion by
focusing on irrelevant minutiae


Pieter is the one discussing irrelevancies such as the non-existent RC oscillator
in a standard 8051.

The OP made it clear he's talking about a crystal/resonator based clock oscilaltor
not an RC type.

Please THINK !

Graham

practice what you post!
Click to expand...


--
"I'm never wrong, once i thought i was, but was mistaken"
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5
 
Jamie wrote:
You don't know the difference between shit and shanghola.
Click to expand...

Neither do you. It's "You don't know Shit from Shinola"

http://www.pottymouth.org/humor/shinola.html


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida
 
On Thu, 01 Nov 2007 00:35:27 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

Pieter wrote:

Eeyore wrote:
Pieter wrote:
Eeyore wrote:
Pieter wrote:

The 8051 does not have an internal oscillator.

What do you mean ? It has an inverter stage designed for clock oscillator use
connected to pins xtal1 and xtal2.


No internal crystal. It has the inverter etc, but always needs an
external crystal. Of course you can also feed it with an external
oscillator.

Can you provide an example of any IC that has an internal crystal ?


I wrote that it does NOT have an internal crystal, like most other
parts. But the 8051 also has no internal RC oscillator. It needs
external parts.

It has the required internal active parts for either a crystal or ceramic resonator
clock oscillator. That's all that matters.

The OP has no interest in hypothetical RC oscillators that don't exist in standard
8051s. Stop talking rubbish.

Graham
Click to expand...
Follow you own advice and stay away here. Go troll elsewhere.

Pieter
 
On Thu, 01 Nov 2007 02:21:58 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

John Fields wrote:

Pay no attention to the Donkey troll.

One of his favorite tricks is to try to derail a discussion by
focusing on irrelevant minutiae

Pieter is the one discussing irrelevancies such as the non-existent RC oscillator
in a standard 8051.

The OP made it clear he's talking about a crystal/resonator based clock oscilaltor
not an RC type.

Please THINK !
Click to expand...
---
Oh, so then you _don't_ try to derail discussions by focusing on
irrelevant minutiae?

Hmm...


--
JF
 
On Thu, 01 Nov 2007 02:21:58 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

John Fields wrote:

Pay no attention to the Donkey troll.

One of his favorite tricks is to try to derail a discussion by
focusing on irrelevant minutiae

Pieter is the one discussing irrelevancies such as the non-existent RC oscillator
in a standard 8051.
Click to expand...
---
On the contrary, he made it very clear that he knew there's no
internal RC oscillator in an 8051:

" I wrote that it does NOT have an internal crystal, like most other
parts. But the 8051 also has no internal RC oscillator. It needs
external parts."

when you earlier implied that he thought there was an internal RC
oscillator in an 8051.
---

The OP made it clear he's talking about a crystal/resonator based clock oscilaltor
not an RC type.

Please THINK !
Click to expand...
---
Why bother when there's hardly a need to when dealing with you?


--
JF
 
On Thu, 01 Nov 2007 00:36:58 +0000, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

Jamie wrote:

Eeyore wrote:
Pieter wrote:

Check the decoupling capacitors.

I'd love to know how he's going to CHECK capacitors ! You certainly say some
daft things.

He might REPLACE any supply decoupling caps that are electrolytic types for
sure. Age is likely to have taken their toll on them.

Oh, I see it's ok now to use the phrase "Decoupling cap"
you back pedaling turd.

A decoupling cap is the correct name for caps used across the power supply.
Click to expand...
---
Strictly speaking, that's not so.

A decoupling cap is usually placed across the power supply terminals
of a _load_ in order to decouple it from any perturbations in the
voltage across it caused by, primarily, wiring inductance between
the load and the power supply proper.
---

The output cap of an amplifier is another matter entirely you jumped-up stupid jerk.
Click to expand...
---
Well, it _does_ keep DC from coupling into the load, therefore it's
a decoupling capacitor as well as a coupling capacitor. It just
depends on how you look at it, you dumbass name-calling moron twat.


--
JF
 
Jamie wrote:

Eeyore wrote:
John Fields wrote:

Pay no attention to the Donkey troll.

One of his favorite tricks is to try to derail a discussion by
focusing on irrelevant minutiae


Pieter is the one discussing irrelevancies such as the non-existent RC oscillator
in a standard 8051.

The OP made it clear he's talking about a crystal/resonator based clock oscilaltor
not an RC type.

Please THINK !

practice what you post!
Click to expand...
Coming from YOU, that's hilarious.

Graham
 
Pieter wrote:

Eeyore wrote:
Pieter wrote:
Eeyore wrote:
Pieter wrote:
Eeyore wrote:
Pieter wrote:

The 8051 does not have an internal oscillator.

What do you mean ? It has an inverter stage designed for clock oscillator use
connected to pins xtal1 and xtal2.


No internal crystal. It has the inverter etc, but always needs an
external crystal. Of course you can also feed it with an external
oscillator.

Can you provide an example of any IC that has an internal crystal ?


I wrote that it does NOT have an internal crystal, like most other
parts. But the 8051 also has no internal RC oscillator. It needs
external parts.

It has the required internal active parts for either a crystal or ceramic resonator
clock oscillator. That's all that matters.

The OP has no interest in hypothetical RC oscillators that don't exist in standard
8051s. Stop talking rubbish.


Follow you own advice and stay away here. Go troll elsewhere.
Click to expand...
Go screw yourself.

You have offered the sum total of ZERO useful advice in this thread.

You're a pontificating nitwit.

Graham
 
John Fields wrote:

Eeyore wrote:
John Fields wrote:

Pay no attention to the Donkey troll.

One of his favorite tricks is to try to derail a discussion by
focusing on irrelevant minutiae

Pieter is the one discussing irrelevancies such as the non-existent RC oscillator
in a standard 8051.

---
On the contrary, he made it very clear that he knew there's no
internal RC oscillator in an 8051:
Click to expand...
Which is therefore utterly irrlevant to the OP's post and is merely idiotic
obfuscation.

Graham
 
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