Hi all,
I want to use a 5V picaxe with a 3.3v i2c device.
If I set the pullup i2c resistors to 3.3v instead of 5v I believe it should work. But I just wanted to make sure that the Picaxe works correctly in that it "pulls down" the line to communicate (as required by the standard), and never pulls up the communication pins to 5V.
Can anyone confirm this? If not, I will just measure it, but it's risky as I may blow up the chip!
I want to use a 5V picaxe with a 3.3v i2c device.
If I set the pullup i2c resistors to 3.3v instead of 5v I believe it should work. But I just wanted to make sure that the Picaxe works correctly in that it "pulls down" the line to communicate (as required by the standard), and never pulls up the communication pins to 5V.
Can anyone confirm this? If not, I will just measure it, but it's risky as I may blow up the chip!