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by dlysenko
Tue Jun 09, 2026 9:28 am
Forum: Hardware
Topic: Is the I2C clock above 400 kHz on the ESP32-C6 reliable?
Replies: 1
Views: 23

Is the I2C clock above 400 kHz on the ESP32-C6 reliable?

Hi,

The C6 TRM states SCL in master mode should not exceed 400 kHz. My setup runs at 1 MHz without obvious issues and I want to understand the reliability implications.

My setup is as follows:
- SparkFun Qwiic Pocket Dev Board (ESP32-C6)
- ICM-45xxx IMU
- 1 MHz I2C clock, short Qwiic 5 cm cable, 2 ...

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