Re: [Gumstix-users] current on the breakout-gs I2C pins

[Rohit C. <roh...@gm...>]

Dave,
Thanks for your response. My breakout-gs board has the label "B00011
R90", so I'm assuming this is rev 901? The datasheet for the sensor
says that the current supply needs to be in the 0.6-0.8 mA range, do I
need to do something on the gumstix end to make sure that the output
current is in this range or would the regulator on the breakout-gs
take care of this? (pardon my ignorance here!)

thx.

On 3/27/07, Dave Hylands <dhy...@gm...> wrote:
> Hi Rohit,
>
> > I need to connect a sensor to the gumstix breakout-gs via I2C. For
> > this I need to figure out how much current will be output to the
> > sensor on the I2C lines (the sensor needs 0.6-0.8 mA at 3.3V). Can
> > someone please tell me how much current is supplied on the breakout-gs
> > I2C pins? The sensor has pullup resistors on the SDA and SCL lines, so
> > additional pullup resistors are not required for connecting to the
> > breakout-gs.
>
> Power for the device needs to come from Vcc, not the SDA and SCL pins.
> I think that the voltage regulator on the breakout-gs board (rev 901)
> is good for 500 mA So you're covered.
>
> --
> Dave Hylands
> Vancouver, BC, Canada
> http://www.DaveHylands.com/
>
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