1 Reply Latest reply on Nov 2, 2020 3:21 AM by PradiptaB_11

    I2C specification on CY27430


      Q1. If we program configuration to NVM by programming tool, Can CY27430 work without I2C connect?

      Q2. If yes for Q1, How do we handle the unused pins of I2C? (Let us know your recommend connection of I2C pins.)

      Q3. Do tLOCK spec include I2C operation?

            (Please see an attached file for  tLOCK of 12page on the datasheet.)


      Best Regards,

        • 1. Re: I2C specification on CY27430



          Please find our comments for the questions.


          1) I2C connection is provided to change configuration settings on the fly if required in the application. If only a single configuration will do then I2C is not required. It is just an option and not necessity.

          2)  You can connect them to GND

          3) tLock parameter is related to startup of the device with the initial configuration programmed into the device. For any changes done to the configuration by I2C you can refer to table 20 in the datasheet. Within 1 ms you will observe the modifications made in the output.