[Coco] Oscillator Circuits needed for EF68B09P 2MHZ versions I recently received

[gene heskett]

On Sunday, June 03, 2012 12:33:45 AM Computer Doc did opine:

> Hi All,
> 
> 
> 
> I recently ordered a couple of EF68B09P chips thinking their pinouts
> were the same as Motorola's MC68B09P chips.  I just downloaded the
> datasheet for it and they are very different, almost like their version
> of the 2MHZ 6809 used some of the original 6800 clock circuit
> specifications. Look at the pin labels.  They remind me of the 6800's
> pin labels.  What do you think? The following link is the one I used to
> get the datasheet:
> 
> 
The chip used in the coco's would be the MC6809EP, where the E means 
external clock generation, and of course the P means the epoxyB plastic 
case
> 
> http://www.datasheetdirect.com/part/EF68B09P.html
> 
> 
> 
> As you can see on page 13 (as Adobe reader counts it) and page 1-162 (as
> it is printed in the PDF file, the clock circuit is quite complicated. 
> Does anyone have a much simpler clock circuit using a 2 lead 8MHZ
> crystal or 4 pin 8MHZ Oscillator (metal case)?  Thanks guys in advance
> for your input. You all are always forthcoming with information.  I
> appreciate it.
> 
> 
> 
> Kip
> 
> 
> 
> 
> 
> 
> 
> 
> --
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Cheers, Gene
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