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I need a sample schematic using the MC9S12DT128. My circuit I designed isn't working.

Question asked by Gerry Hermann on Jul 1, 2014
Latest reply on Jul 9, 2014 by iggi

I designed a circuit around the MC9S12DT128BMPV. I'm using an external 16MHz clock. When I power up there are some erratic square wave signals on the I/O pins. It seems like it is going through some type of continuous reset. I have the reset line pulled high with a 5K resistor. CW with a Cyclone can't communicate. Any ideas?