Hi,
Any chance the powersupply voltage used to simulate the inputs are higher than Vdd of the chip? That might (depending on how much higher it is) forward bias the clamping diode on the input, increasing the current going into the pin.
/Henrik.
|
Hi,
Any chance the powersupply voltage used to simulate the inputs are higher than Vdd of the chip? That might (depending on how much higher it is) forward bias the clamping diode on the input, increasing the current going into the pin.
/Henrik.
|
Code:TRISB = %11110000 ‘B.0 – B.3 inputs, rest outputs.
Your TrisB setting is wrong. To have B0 - B3 as inputs then the TrisB should be the other way around
TrisB = %00001111
Cheers
Al.
All progress began with an idea
|
Al nailed it, the way "I" keep those straight is 0 looks like the letter O for outputOriginally Posted by aratti
and 1 looks like the uppercase letter I for Input, works for me anyway.
If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
.
Gold is the money of kings, silver is the money of gentlemen, barter is the money of peasants - but debt is the money of slaves
.
There simply is no "Happy Spam" If you do it you will disappear from this forum.
|
Input Pins - Low Impedance
Thanks everyone. I feel very foolish. My only excuse is that its quite a while since I have been near a uP.
GraemeJ.
|
NEVER feel foolish about asking a question, for every poster who has the guts to ask there are many who do not and have the same question, so on their behalf, thanks for asking!
If you do not believe in MAGIC, Consider how currency has value simply by printing it, and is then traded for real assets.
.
Gold is the money of kings, silver is the money of gentlemen, barter is the money of peasants - but debt is the money of slaves
.
There simply is no "Happy Spam" If you do it you will disappear from this forum.
Members who have read this thread : 0You do not have permission to view the list of names.
Posting Permissions
Bookmarks