LDC1612: I2C

Hi Janine,

When the ADDR pin is pulled high, the I2C address is 0x2B. What are the values of the I2C pull-up resistors you are using?

Best Regards,

Dear Kristin

We used 2.2k ohm, we tried 2.2k, 1.5k, 750 ohm
Both get the same "NACK".

Please help us analyze the reasons and what are your suggestions.

Thank you

Best Regards

Janine Lin

Hi Janine,

Can you share your schematic so I can verify that all of the connections are correct? 

Best Regards,

Dear Kristin

We found the problem in the circuit.

Now we have a problem reading the LDC1612.

The figure shown below (the I2C Read Register Sequence for LDC1612 IC) .

We couldn’t completely C program to read LDC 1612 I2C protocol  but still doesn’t work any .

I2CCON |= 0x10; // STOP (STO)

I2CCON &= 0xF7;// Clear I2C flag (SI)

EI2C = 0; // I2C interrupt disable

EAL = 0; // Interrupt disable

Please support us for I2C C program for LDC 1612.

Thank you very much.

Hi Janine,

Can you clarify what is not working? Are you still getting a NACK from the device?

Best Regards,