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

[quote="Bean (Hitt Consulting)"]
Dan,

First you need to know if the chip is running or not, just because your serial pin stays at ground doesn't mean it stopped working. 

Just make a simple LED blinker with the same DEVICE parameters and see if it works. If it doesn't post the LED blinker program.

You may need a different OSCxxx setting for 3.3V on the device line.

Bean.


 

Done that. But I didn't use an LED, I used a 4 channel Tektronics scope. 

I'm scoping the oscillator pin. I can see the 50Mhz. So, You're telling me that

just because I can see the 50Mhz, the chip may not be running?

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