On Wed, 1 Jul 2009 23:56:02 -0500
"Steve Maroney" <
steve@...> wrote:
> I need a method of keeping data not destined for the 2nd microcontroller
> away from it while addressing the LCD. I thought I could put some
> 2n2222's in line with my 4 shared data lines. When I need send data to
> the other microcontroller, I would bring the base of on my 4 transistors
> high, send the data, and bring it back low.
I suggest you check the CD4066 quad analog switch. Seems a lot simpler
than using discrete transistors. No resistors necessary either.
John
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