Tool/software:
use PCA9306DCUR t0 trans 3.3V to 1.5V
if host(3.3V) 3ma and slave(1.5V) 3ma。
how to cal the Rpull(min)of 1.5v?
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Hey Xujunfeng,
The lowest pullup value used can be estimated depending on the acceptable VOL as shown here: I2C Bus Pull-Up Resistor Calculation
Regards,
Jack