CPLD input

Hans,

I would call that an output, or a broken input.

Aust> Does a CPLD Input source current ? When I measure the voltage

Yes, this is driving me mad ....

It is configured as input, and it WORKS as input. If I pull it down to ground, the logic detects the low level.

Could it still be broken ? How could I break an input ? There are only 5V on the board ....And the rest of the chip works just fine ....

You could clarify if your 50mA meant 50 microamps, or

A simple test is to try moving the function to another pin, or simply swap the pin allocates (two same-class pins). If the problem stays with the pin, it's likely to be chip related, if it moves with the function, suspect something in your code...

-jg

it is 0.050 A or 50 milliamps

Thanks I will do that.

code is very simple:

VCC_SENSE: in std_logic; -- sense power

Here's a weird thought... Try VOLT_SENSE: in -- sense power

Thanks for your help, It actually WAS a broken input. The behaviour is OK when I use a new chip ..