TheGuyDanish / CM4_MATX

CM4_MATX is an open source, micro-ATX standard compliant motherboard for the Raspberry Pi Compute Module 4
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added RTC with PCF85263A #51

Closed derwana closed 3 years ago

TheGuyDanish commented 3 years ago

I'm not sure I feel safe drawing +5v onto the i2c lines as they would already have either 1.8v or 3.3v drawn onto them via GPIO_VREF from JP3. Is there any specific reason it should have 5v on i2c?