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Visitor II
August 20, 2018
Question

LIS2DS12 needs I2C pull up or not?

  • August 20, 2018
  • 1 reply
  • 541 views

I am using STEVAL-MKI174V1 adapter board for LIS2DS12 evaluation. I checked the schematic of STEVAL-MKI174V1 and I have two questions:

  1. Can Vdd for STEVAL-MKI174V1 be 3.3V without damaging LIS2DS12 because it can handle only 2.2V (It seems answer to this will be yes because of regulator)
  2. Do I need to add external pull-ups to SDA, SCL line even after adapter board ?

Thanks,

Kiran

    This topic has been closed for replies.

    1 reply

    ST Employee
    August 21, 2018
    1. If the regulator and level shifter is not populated on the adapter you cannot connect it to 3.3V. By default is is not populated, you can check it on the bottom side of the board.
    2. Yes, you need pull-up on SDA and SCL pins.