topic Re: How do I program LPC812 so that it can treat 1/2 VCC as Zero level? in LPC Microcontrollers

How do I program LPC812 so that it can treat 1/2 VCC as Zero level?

lpcware — Wed, 15 Jun 2016 20:06:47 GMT

Content originally posted in LPCWare by kalevikrant on Thu Feb 13 09:32:55 MST 2014

Hi
My input swings between VCC and 1/2 VCC. So how do I program LPC so that it can treat
1/2 VCC as zero level and VCC as 1

Re: How do I program LPC812 so that it can treat 1/2 VCC as Zero level?

lpcware — Wed, 15 Jun 2016 20:06:48 GMT

Content originally posted in LPCWare by nxp_apps on Fri Feb 21 14:42:12 MST 2014
Hi,

By datasheet, the High-level input voltage (logic '1') is minimum 0.7Vdd, and the LOW-level input voltage (logic '0') is max 0.3Vdd.
As long as your Vdd supply is within the supply spec range from 1.8 v to 3.6 v, the specs mentioned will apply.
The input voltage levels are not software programmable.

Thanks.

nxp_apps

Re: How do I program LPC812 so that it can treat 1/2 VCC as Zero level?

lpcware — Wed, 15 Jun 2016 20:06:48 GMT

Content originally posted in LPCWare by salamlora1 on Mon May 19 03:39:53 MST 2014
Hi
I have an idea
If you change the Gnd to the 1.2V its may helpful: D
Its can possible with resistors
( it’s only an idea )