1 Reply Latest reply on Nov 21, 2019 9:13 PM by BoTa_264741

    I2C comms with 4x20 LCD (HD44780 controller)

    BrHi_3565586

      I'm long-term embedded, but new to PSoC's.

       

      PSoC Creator 4.2 appears to offer two relevant Component options for multi-line LCD displays:

        a)  Parallel connection to an LCD equipped with an HD44780 controller

        b)  I2C bus with an LCD equipped with a PCF2119x controller

       

      We need to be frugal with GPIO, so we can't dedicate an entire port to an LCD. 

       

      The market is heavily saturated with 4x20 I2C/HD44780 LCD panels, while a 4x20 LCD with I2C/PCF2119x controller seems rare.  I'm using PSoC4 CY8CKIT-049  trying to incorporate PSoC4 / 4200M in my projects, so any guidance in this regard would be sincerely appreciated.