Digital level input voltages

NETMF & Gadgeteer
1

Hi All,

I have a FEZ Panda II and am trying to find the voltage threshold for reading digital pins. I can’t seem to find in any documentation what voltage is deemed as true or false. I ask because I’m having signal issues interfacing with a 2.8 volt system.

Thanks,
Scott

2

You might want to take a look in the LPC2387 datasheet. Or the LPC23xx user manual: http://www.keil.com/dd/docs/datashts/philips/lpc23xx_um.pdf

3

I found it here: http://www.nxp.com/documents/data_sheet/LPC2387.pdf search for vih and vil

4

Awesome thanks! I should have thought to check the uC datasheet :slight_smile: