AVR-Chat

On Sun, 12 Mar 2006, Timothy D. Lenz wrote:

> I have been looking at using a 2313 for an expermental pulse motor, but by
> the time I add enough address decoder parts to do what I want, the circuit
> starts getting a bit complex. I started think about maybe using a controller
> per coil plus 1 master controller. The problem I see with the little 8 pin
> atmel chips is, while they have a lot of stuff in them, you still end up
> needing a number of external parts to demultiplex and get at them. The coil
> controller needs at least 2 output bits, one input and one interupt. It
> would also need a serial port of some kind to receive commands form the
> master control, and and ADC that can be used to monitor the voltage across
> the coil. I like the Atmel stuf because the chips are cheap, many being
> under $5, and they have free development software.
> 

If you're going to do that, why not just go with one chip with more pins?   
Or do the individual controllers have to be in different locations?

Zack