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PCA9698 I/O Expander unable to write the data

Question asked by karan chauhan on Dec 21, 2017
Latest reply on Jun 28, 2018 by p L

Hi All,

I am trying to write and read the data to and from the PCA9698 I/O Expander (as a slave device) but device gives the NACK when I am writing and reading anything to/from it.


Can any tell me, How can I read and Write the data from the I/O Expander PCA9698?


Does anyone has built a code to read and write the Data to/from the I/O port which can help me?


I have used Slave Address 4Eh by applying the VDD to all AD0 to AD1 Pins.