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ETan01
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7 years ago

How to properly use input in CPLD (EPM240T100C5)

For testing how to use input in EPM240T100C5 physically, I set up the following buffer .bfd : Supposedly, when I connect the available VCC to PIN 55, the PIN 57 will be HIGH. Else, PIN 57 shou...
ETan01's avatar
ETan01
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7 years ago

Question closed.

What a careless mistake. I forgot to connect the ground. It should look something like this.

https://www.youtube.com/watch?v=f6j700YDQfs

Basically, it is VCC => push button => ground, and in between push button and ground, just take a wire input to the input pin.