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voltage thresholds at the input levels

 
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rikotech8



Joined: 10 Dec 2011
Posts: 376
Location: Sofiq,Bulgariq

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voltage thresholds at the input levels
PostPosted: Mon Sep 10, 2012 6:16 am     Reply with quote
Hi! sorry about the bad english Embarassed !
The pic I'm using is 10F200.
How would I know the voltage levels that the PIC considers as logic '1' and logic '0' ?
I want to know above what voltage, applied on the controller input is consider as an "high" and the opposite, below what voltage is considered as "low"? I have read the datasheet but without any success.
I hope you uderstand my issue!
Thanks in advance!
RF_Developer



Joined: 07 Feb 2011
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PostPosted: Mon Sep 10, 2012 6:34 am     Reply with quote
It is in the datasheet. Look at Vil and Vih on page 69. Note they are dependant on Vdd. I say that as a very common problem is when trying to use 5V PICs with 3.3V peripherals, such as SPI and I2C devices. This though is just basic electronics engineering: the sort of thing an engineer looks at first, or else knows through experience.

RF Developer.
rikotech8



Joined: 10 Dec 2011
Posts: 376
Location: Sofiq,Bulgariq

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PostPosted: Mon Sep 10, 2012 10:52 pm     Reply with quote
I see. Thank you!
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