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TPS65987D: unused I2C pins (I2C2_IRQ, I2C3_SCL, I2C3_SDA, I2C3_IRQ)

K.Yaita
Guru 29720 points
Part Number: TPS65987D

Hi Team,

I would like to ask about unused I2C pins.
Is it possible to leave unconnected for I2C2_IRQ, I2C3_SCL, I2C3_SDA, I2C3_IRQ?
I would like to know which should be followed datasheet or Hardware Design Guide.
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- datasheet  https://www.tij.co.jp/lit/ds/symlink/tps65987d.pdf



- Hardware Design Guideline https://www.tij.co.jp/jp/lit/an/slva888c/slva888c.pdf


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Best Regards,
Yaita

  • +1
    TI__Genius 12700 points

    Hi Yaita,

    Yes if they are unused, you may leave them disconnected. Usually, I2C3 is always connected to an EEPROM so it's suggested to connect them to a pullup.

    Thank you,

    Hari