MC56F82748 I2C pull up resistor

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MC56F82748 I2C pull up resistor

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EngHuiPeng
NXP Employee
NXP Employee

Is there any recommended pull up resistor for SCL and SDA lines of the I2C peripherals. This is for MC56F82748(Anguilla Silver)

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xiangjun_rong
NXP TechSupport
NXP TechSupport

Hi, HuiPeng,

I think 4.7K ohm pull-up resistor is okay for the open drain IIC pins: SCL/SDA for MC56F82xxx.

BR

Xiangjun Rong

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Stano
NXP Employee
NXP Employee

Hi HuiPeng,

for the 400pF max capacitance and 100kHz max communication speed the max pull-up resistor is 4k7. I suggest you to use 2k7 or 3k3 as pull-ups.

BR,

Stano.

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