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'[OT]Parts search: clock/timer'
1999\05\01@104458 by Dave Johnson

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Off topic again, sorry, but I'm in parts search mode and I know there's a
lot of expertise and experience in electronics (not just PICs) on this
list:

I'm looking for a good crystal driven counter/timer in a small package
that I could use to for two things: externally clocking a uart (MAX3100,
probably), and also simultaneously clocking serial data out of the uart
and out of some A/D converters. I'm trying to avoid two crystals on the
board (the uart can be crystal driven, but has no baud rate out pin).

Newbie alert: I know virtually nothing about counter/timers, so far, so
I'm also seeking an education. Private email encouraged.

Dave Johnson

1999\05\03@073400 by Harrison Cooper

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Look on Cypress semiconductors website...there are quite a few programmable
clock generators there.

1999\05\03@103802 by Dave Johnson

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(This is a resend: although I've had no error messages, I haven't seen
this appear on the list yet, after 2 days...)

Off topic again, sorry, but I'm in parts search mode and I know there's a
lot of expertise and experience in electronics (not just PICs) on this
list:

I'm looking for a good crystal driven counter/timer in a small package
that I could use to for two things: externally clocking a uart (MAX3100,
probably), and also simultaneously clocking serial data out of the uart
and out of some A/D converters. I'm trying to avoid two crystals on the
board (the uart can be directly crystal driven, but has no baud rate out
pin).

Newbie alert: I know virtually nothing about counter/timers yet, so I'm
also seeking an education. Private email encouraged.

Dave Johnson

1999\05\03@122901 by Mark Willis

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You won't either, Dave, until you send the "Set Repro On" command the
PICList assumes you know what you've sent to the list - so it doesn't
send it back to you, to reduce Internet traffic.  Astonishing to new
users, I'm about to change that default.  You can use Tjaart's handy
page at http://www.wasp.co.za/~tjaart/piclist.html, the "I want to see
my own posts" link there, to do this easily (You may need to send that &
then answer correctly to the verification mail, I haven't done that in a
LONG time.)

 I'm fairly sure you could use a PIC to do this <G>  I'm not sure
you've given us enough data to help, though, otherwise - what crystal
frequency were you thinking of using, what frequency in does the UART
need, and what frequency do the ADC's need to clock data out at?  We're
not always super fast to respond here, but we'll get to you, it helps if
we know enough to be able to answer quickly <G>  (If I'd had coffee yet
this AM I might be able to tell you, alas, I'm running slow still.)

 Might be able to use an HC buffer off the crystal on the UART, even,
but we don't know enough to answer you, yet.

 Mark

Dave Johnson wrote:
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