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LIS2DS12 needs I2C pull up or not?

KPhal
Associate

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

1 REPLY 1
Miroslav BATEK
ST Employee
  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.