Teensy 3.2

[eduard97]

hello friends, sorry I have a doubt the analog pins A0 to A9 are tolerable to 5 volts? or all the analog pins only support 3.3 volts?

thank you very much

 

[Theremingenieur]

There are two types of analog pins on the Teensy 3.2: Those which can alternatively be analog and digital pins (A0 - A9 = digital 14 to 23, and A15 to A20 = digital 26 to 31) are generally 5V tolerant. But if in analogRead configuration when the MUX switches these pins to the ADC, I'd take care, though. The remaining analog pins A10 to A14 which have no digital pin equivalent are definitively NOT 5V tolerant.

 

[eduard97]

Thank you very much, I can actually work the pines from A0 to A9 at 5 volts right?

 

[Theremingenieur]

Yes, if you use these not as analog function but as digital pins 14 to 23. If you want to do analog stuff, for example with the analogRead() function, 5V won't hurt, but the ADCs maximum reading will already be reached at 3.3V.

 

[tonton81]

yes, but keep in mind the highest itll return at 8bit analog is 1023 at 3.3v, so anywhere between 3.3 to 5v will register as 1023, going below 3.3 is when the value starts lowering.