Subject:
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Re: I2C Counters
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 26 Jul 1997 03:58:18 GMT
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Original-From:
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Donald Day <DDIGOR@WELL.COMspamcake>
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Viewed:
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1268 times
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How many counts, how fast are you counting?
Can the LSBs be dropped?
What I'm suggesting is using a clock/calendar or clock/calendar/RAM
such as the Philips PCF8583. Input your wheel pulses instead of the
oscillator. You scale by 256in one mode, count directly in another.
There are lots of bits, but they are BCD decimal and time modulo.
1/100's, 1/10's, seconds (mod 60), minutes (mod 60), etc.
Or you could use 2 chips each 2 to 3 times the size,
your favorite CMOS counter and a PCF8574 I2C I/O expander.
On Fri, 25 Jul 1997, Bruce Moore wrote:
> Does anybody know if there is such a thing as a binary counter that
> will work on an I2C buss. If there is such a thing it would sure
> simplify a few circuits.
>
> I'm already using the SPI lines to control a few I2C DACs. To
> monitor motor/wheel RPMs I would like to use counters via the I2C but
> I can't find any?
>
>
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Message is in Reply To:
 | | I2C Counters
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| Does anybody know if there is such a thing as a binary counter that will work on an I2C buss. If there is such a thing it would sure simplify a few circuits. I'm already using the SPI lines to control a few I2C DACs. To monitor motor/wheel RPMs I (...) (27 years ago, 25-Jul-97, to lugnet.robotics.handyboard)
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