Anthony Fremont ( snipped-for-privacy@nowhere.com) ha scritto:
::: BTW, I need to use a crystal with nominal frequency ::: of 16 MHz. So the best soultion should be to use a crystal ::: for each device, shouldn't it?
:: Possibly the easiest and least expensive anyway.
Very clear, thank you!
Thanks to everyone who has shared his knowledge on this thread.
yes thats it thanks saved me drawing it.
output CPU A should be capable of driving a cmos input, as long as CPU B is a modern type, and CPU A isnt a realy weedy type. dont forget you usualy need capacitors to ground on both pins, and ofc the capacitance of the CPU B input means you might need slightly less on that node.
yes id like to know too.
Colin =^.^=
Yes, the caps to ground were a exercise for the user. :-)
donald
PS: I wouldn't use this in production. But it might work on the bench. If the OP has a board were he can try several chip of both types, CPU A and CPU B to see if they are consistant.
.--------------. .--------------. | | | | | device 1 | | device 2 | | | | | | | | | | Xin Xout | | Xin Xout | `---O-----O----' `---O-----O----' | | | | +--------------' +-|#|-+ | | === === | | | | --+-- --+-- ///// /////
Bye. Jasen
oo thats quite a good drawing too, you guys have more patience than I do.
Colin =^.^=
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