[time-nuts] source for ICS525 demo board ...

Brooke Clarke brooke at pacific.net
Sun Feb 19 17:20:36 EST 2006

Hi Poul:

I see what you mean.  The ICS525 demo board has pins on the bottom that 
will plug into either a full size or half size DIP packaged oscillator 
A double sided PCB with a couple of 10 position switches, a couple of 
caps, the SOIC-28 part, and 6 swage mount pins and a crystal probably 
would fit a PCB about 1.1 x 1.7".  I guess this tread started with John 
asking where to get the demo board, and now I'd like to know where?  
I've sent a query to Nu Horizons since they stock the ICS525 in a number 
of flavors and show two versions of a 525 "Kit" with a price of "Contact 

Have Fun,

Brooke Clarke, N6GCE

w/Java http://www.PRC68.com
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml

Poul-Henning Kamp wrote:

>In message <43F8008C.3080401 at pacific.net>, Brooke Clarke writes:
>>Hi Hal:
>>In that case something like the Jameco 141372 Prototype board might 
>>work.  Doing this implies that you want a tight connection between the 
>>ICS525 and the PC, which might be the case for an NTP type application.
>>In the ham radio uses they typically have a common PIC, like the 16F84, 
>>that sends the divider codes to the ICS525 and has some sort of selector 
>>switches to choose the channel number.
>The reason I like the ICS525 is that it has parallel input so you can
>configure it with DIP switches.  For experimental work, that is the
>most flexible.

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