In SX Microcontrollers, SX/B Compiler and SX-Key Tool, Peter Van der Zee wrote:

Hi crgwbr;

I've been running some simple code on my SX28 very happily at 103 MHz and 5V without ANY heatsink. It gets nice and warm (45C with an I/R thermometer), but certainly not what I would call HOT to the touch.

You can readily try this too by using the SX-Key as your clock, and cranking up the speed to your heart's content!

My particular SX craps out at clocks over 103 MHz. Some will go faster... I had one at 110Mhz once with tweaking the power supply voltage.

I believe the heat generated does vary with the code you are running... probably due to the total number of transitions happening per second.

Cheers,

Peter (pjv)

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