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Author Topic: 5V design what do you use for i2c pullup resistors?  (Read 723 times)

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Offline alank2Topic starter

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5V design what do you use for i2c pullup resistors?
« on: June 15, 2020, 07:25:41 pm »
It seems like I've used 1K or 2K, but not sure which is best, or something else - what do you use?
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Online oPossum

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Re: 5V design what do you use for i2c pullup resistors?
« Reply #1 on: June 15, 2020, 07:45:24 pm »
Best is going to be application dependent. My default values for 400 kHz or less on a PCB are 4k7 for 5V and 2k2 for 3V3.
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Offline alank2Topic starter

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Re: 5V design what do you use for i2c pullup resistors?
« Reply #2 on: June 15, 2020, 08:00:26 pm »
Sorry, I'm thinking 1MHz.
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