Is the LPC2478 Input/Output have builin sch-mitt trigger?

[sureshpandi]

Hi,

As per LPC2478 data sheet the I/O have builtin sch-mitt trigger.

Is really LPC2478 Input/Output have builtin sch-mitt trigger? (attached the screen shot)

Please confirm.

[CarlosCasillas]

Hi Pandi,

The built-in Schmitt Triger circuitry is the regular circuit for digital IO. Based on the image that you sent, it just applies to the Digital Input, as the Digital Output and Analog Inputs are on separate routes.

You could check the hysteresis voltage (Vhys) on Table 9 “Static characteristics” of LPC2478 Datasheet, available on the following link:

http://www.nxp.com/docs/en/data-sheet/LPC2478.pdf

Hope this will be useful for you.
Best regards!
/Carlos
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------