Searching \ for '[PIC] PIC16F690 internal oscillator stability.' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/microchip/time.htm?key=oscillator
Search entire site for: 'PIC16F690 internal oscillator stability.'.

Exact match. Not showing close matches.
PICList Thread
'[PIC] PIC16F690 internal oscillator stability.'
2007\08\31@151127 by Alexandre Guimar„es

face picon face
Hi,

   I looked at the datasheet and googled before :-)

   It seems that the internal oscillator on the 16F690 is stable and
precise enough for serial communications as long as the other side has a
crystal and I maintain VCC at 3.3 volts. Is that assumption correct ? Can I
really rely on the internal oscillator for USART communications ? Speed will
be 4800 baud.

Best regards,
Alexandre Guimaraes


--
I am using the free version of SPAMfighter for private users.
It has removed 3312 spam emails to date.
Paying users do not have this message in their emails.
Get the free SPAMfighter here: http://www.spamfighter.com/len


2007\08\31@155005 by Steve Howes

flavicon
face
>     It seems that the internal oscillator on the 16F690 is stable and
> precise enough for serial communications as long as the other side  
> has a
> crystal and I maintain VCC at 3.3 volts. Is that assumption  
> correct ? Can I
> really rely on the internal oscillator for USART communications ?  
> Speed will
> be 4800 baud.

I use 9600pbs in a project and it appears to work perfectly. My  
protocol has built in checksumming etc and have rarely seen errors  
despite the fact its in a reasonably harsh environment.

2007\08\31@203005 by Jinx

face picon face
> Can I really rely on the internal oscillator for USART

Probably, except if very cold or very hot (see Table 17.2), which
you could test for yourself with a freezer / oven. 3% is reckoned to
be about the difference limit

More... (looser matching)
- Last day of these posts
- In 2007 , 2008 only
- Today
- New search...