I am currently working on a project where I want to interface with the LIS2DE12 accelerometer and an Arduino Mini Pro (16MHz) w/ ATmega 328 over I2C. I am using the STEVAL-MKI175V1 as an LIS2DE12 adapter board. The following pins are connected:
SCL to A5
SDA to A4
SDO to 2.5V (This sets the device address 0x19. Connecting it to GND would change the address)
CS to 2.5V (This enables I2C)
GND to GND
VDD_IO to 2.5V (I have also tried VD_IO to RAW)
I am not using pull resistors as the ATmega 328 has internal pull resistors. Is this setup correct? The board also has VDD is there any difference between VDD_IO in this context. I also have to mention that I had previously connected SDO,CS and VDD_IO to 5v without me realizing the max voltage for VDD_IO is 4.8 and CS and SDO have a max voltage of VDD_IO + 0.3. Did damage the STEVAL-MKI175V1 board? Is there a way to test if it was damaged?