Hello. I have a existing I2C circuit that communicates with capacitance touch controller. I need to replace the controller with cap touch capable MCU acting as I2C slave.
Lines are originally pulled to 1.8V, but mcu need min 3V. I trying to pull it with 4.7K resistors to 3.3V but the lane does go above 2.4 V - 2.7 V.
Seems like all components on the line are 5V - 5.5V capable. Even with 5V it just goes up to 2.7V. If I disconnect the circuit and measure on resistor end t shows 3.3v. Something is pulling it down and not sure what.
Is there a way to bypass the whole circuit? Meaning, at the end add components to bring the lines to 3V before the mcu ?
Lines are originally pulled to 1.8V, but mcu need min 3V. I trying to pull it with 4.7K resistors to 3.3V but the lane does go above 2.4 V - 2.7 V.
Seems like all components on the line are 5V - 5.5V capable. Even with 5V it just goes up to 2.7V. If I disconnect the circuit and measure on resistor end t shows 3.3v. Something is pulling it down and not sure what.
Is there a way to bypass the whole circuit? Meaning, at the end add components to bring the lines to 3V before the mcu ?
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