Hi, Howard,

It's a three pin resonator. =


Checked the data sheet again: it clearly says on page5: Vdd=3D3,0 - 5,5V:  =


Regards

Peter


-----Urspr=FCngliche Nachricht-----
Von: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] Im Auftrag von
Howard Winter
Gesendet: Samstag, 2. Juni 2007 13:50
An: Microcontroller discussion list - Public.
Betreff: Re: [PIC] F628A with resonator at 3V

(tag added)
Peter

On Sat, 2 Jun 2007 12:54:31 +0200, Peter Feucht wrote:

> Dear Piccers,
> =

> Tried to operate a F628A with a 4MHz resonator at 3V
yesterday - resonator
> shows 4MHz sine wave but processor never starts. Tried
both XT and HS
> oscillator setup. Data sheet of 628A says Vdd=3D3-5,5V. After
changing voltage
> regulator to 5V it works perfectly. =

> =

> Any idea how I can operate this configuration at 3V?

Is this a two-pin or three-pin resonator?  If the former, what value of
capacitors are you using?

Cheers,


Howard Winter
St.Albans, England


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