In SX Microcontrollers, SX/B Compiler and SX-Key Tool, ringlord wrote:

All--

 

I recently discovered the SX Controller Board which uses the SX28 chip. My question may be very simple and very obvious . . . to everyone but me!

 

I wonder why Parallax chose the 28 pin SX chip instead of the 48 pin SX chip with the extra I/O pins for the product?

 

It APPEARS that the SX chip is pretty much standalone except for power and the external ocillators needed. (I am nowhere near to being well-versed in electronics.) Is there a schematic describing such a cobbled-together device?

 

Thanks!

 

--Bill

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