Alan69
Member level 5
3v3 pic
I use it all the time, but of course on normal inputs not schmitt trigger.
I don't use PIC24, but assuming it's inputs are schmitt trigger too, I would try dropping ICD to 4.1V and inserting just series resistors into the lines. 4*.8 = 3.28, and backwards 5*.8 = 4, so you should be able to talk to both 3.3V and 5V targets without changing, let the resistors and input diodes take care of the rest. Have the ICD and targets right in front of me, I'll try it in just a little and make sure it's good, could be handy and almost no extra parts..
polymath said:Hi szlovak
I do not think Alan69 has tried his own suggestion.
I use it all the time, but of course on normal inputs not schmitt trigger.
I don't use PIC24, but assuming it's inputs are schmitt trigger too, I would try dropping ICD to 4.1V and inserting just series resistors into the lines. 4*.8 = 3.28, and backwards 5*.8 = 4, so you should be able to talk to both 3.3V and 5V targets without changing, let the resistors and input diodes take care of the rest. Have the ICD and targets right in front of me, I'll try it in just a little and make sure it's good, could be handy and almost no extra parts..