I2C low speed

engr_david_ee · 2026-05-04T07:04:48-0400

Is that possible to communicate with slave I2C device provided the SCL running/generated from MCU at very slow speed like 1 kHz ?

Papabravo · 2026-05-04T10:02:15-0400

engr_david_ee said:
Is that possible to communicate with slave I2C device provided the SCL running/generated from MCU at very slow speed like 1 kHz ?

Yes. There is no lower limit on the timing of SCL.

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