d 0773d

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8 years, 2 months ago.

FRDM-K64F are the i2c pins 5 volt tolerant?

HI, are the i2c pins on the FRDM-K64F 5volt tolerant?

1 Answer

Jan Jongboom
8 years, 2 months ago.

According to https://developer.mbed.org/questions/54245/Does-the-FRDM-K64F-have-5V-tolerant-GPIO/ all analogue pins (and RESET, EXTAL, and XTAL) are limited to 3.3V. All other pins should be 5V tolerant.

I believe that will include the I2C pins.

Accepted Answer

Hi Jan. Thank you for answering my question :-). I do apologize for double posting a relating question. I did read the question posted at the link you provided before asking my question. However, after reading the question and answer I still wasn't sure because I didn't realize i2c fell under the digital IO pins category. I was under the impression that digital IO pins were used to set either high or low....

posted by d 0773d 06 Sep 2016

I2C works by quickly toggling the IO pins high and low, thus sending data :-)

posted by Jan Jongboom 06 Sep 2016