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

Hello,

If 100MHz is toasty, would 80MHz be a viable option for an outdoor summertime application? (Like, on a day like today... Gosh, it's withering in DC.) 

If we'd have to test ten to find one that would be stable at this speed, that would be fine for our application. We're replacing a $1K+ USD semi-custom board (overpriced, IMHO), so I'm sure I can get support for going through some spare $3-$5 chips if it comes to it.

The encoder is 4K counts, and runs at about one rotation per second. Keeping accurate track of 16K quadrature counts on an 80MHz processor doesn't *sound* too hard.

I'm reading the ADC0834 8-bit 4-channel A/D datasheet and I think I understand it. Sounds like adding one of those wouldn't be a huge leap.

So, if this thing can run reliably at 80MHz I think it'll work fine for our application. I'll pick up the kit and board and we shall see what happens. Thanks for the info.

-Les

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