pic16f88 & voltage

[Acetronics2]

no problem, i read backwards randomly at times, so maybe i mis-read the question.

i use pin RB2(rx) is the only reading from the xbee currently.

Hi,

RB2 is then a Schmitt trigger Input ... if used for RX ...

Can a 5v Powered schmitt Trigger input read 3v3 levels ??? ...

Good Question !!!

Alain

[rdxbam]

Hi,

RB2 is then a Schmitt trigger Input ... if used for RX ...

Can a 5v Powered schmitt Trigger input read 3v3 levels ??? ...

Good Question !!!

Alain

indeed, great question and prompts me to research more:

via p#11 of the datasheet from http://ww1.microchip.com/downloads/e...doc/30487c.pdf ...

i'm using pin RB2 as [I]nput and not using the buffer as a Schmitt trigger input. Pin RB2 as [I]nput is for ausart.

the Schmitt trigger input would be for serial programming ICD or low voltage ICSP programming but not on pin RB2, unless for SPI data out, which in my case it is not.

is that how you read it?

thx

[rdxbam]

Hi,

Can a 5v Powered schmitt Trigger input read 3v3 levels ??? ...

[...]

Alain

on another board with a pic16f88 with RB2 reading from pin2 on the xbee sitting on a xbib-r-dev board, the data is read just fine. yes, RB2 can read 3.3v levels.