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Thread: Working dual-clock speeds
www.piclist.com/techref/microchip/time.htm?key=clock
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face BY : Dan Michaels email (remove spam text)



Roman Black wrote:
..........
>1. Do you really need 20MHz top speed?
>2. What output current will the divider chip sink/source?
>:o)


I am looking at using the ECS dual-clock chip in a sampling
ckt where data is captured into relatively high-speed RAM,
so I need 20, 10, and 5 Mhz on the top end. 50 Mhz would be
nice. The controller [Scenix] can handle timing speeds below
5 Mhz. The RAM chips require close to 50% duty cycle on the
clock - they probably "could" handle a little asymmetry,
maybe 40-60 or 60-40.

I'll probably have to use an external mux - pppppppppp.

best regards,
- Dan Michaels
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