Timeline for What length wire and how many devices after which I need a repeater or extender for i2c?
Current License: CC BY-SA 4.0
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| Feb 4, 2020 at 17:44 | comment | added | Justme | See I2C bus manual and application notes to how to calculate those. There will be ready made tables as well. Cable capacitane cannot be neglected, for example I2C bus has max capacitance specification of 400 pF, and about eight meters of Cat5 exceeds that. And it also means that with passive resistive pull-ups the limit due to rise time is about 200pF. | |
| Feb 4, 2020 at 15:23 | history | edited | DKNguyen | CC BY-SA 4.0 |
added 50 characters in body
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| Feb 4, 2020 at 15:18 | history | edited | DKNguyen | CC BY-SA 4.0 |
added 50 characters in body
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| Feb 4, 2020 at 15:14 | comment | added | DKNguyen | @KaizerSozay See RC time constant. You can probably neglect cable capacitance in this case. Use part datasheets to see if they list input capacitance | |
| Feb 4, 2020 at 15:13 | comment | added | Kaizer Sozay | I’m very new to electronics. How to do that? | |
| Feb 4, 2020 at 15:12 | history | answered | DKNguyen | CC BY-SA 4.0 |