https://community.nxp.com/t5/Embedded-Software-and-Tools/To-solve-a-bug-in-PCF8579-LCD-Driver-IC/m-p/1617965#M356 <P>Hello community,&nbsp;</P><P>I am developing a firmware for a LCD display in which PCF8579 is used as a driver IC.</P><P>In my application, everything was working fine; however, PCF8579(1) generates unnecessary signals on its segment pin (0,1,2) without writing anything in RAM area.&nbsp;</P><P>I have used two PCF8579 IC because i intend to drive total 78 segments; for that reason, i required two ICs.</P><P>Backplanes are driven by PCF8578 IC.</P><P>So, kindly suggest your opinion. What should i do in this situation.</P><P>If anybody have any idea about it then please let me know.&nbsp;</P><P>I am waiting for your response !</P><P>Regards,</P><P>Nilesh Parmar : Embedded software engineer</P> Sat, 18 Mar 2023 12:39:09 GMT nilesh2301 2023-03-18T12:39:09Z https://community.nxp.com/t5/Embedded-Software-and-Tools/To-solve-a-bug-in-PCF8579-LCD-Driver-IC/m-p/1617965#M356 <P>Hello community,&nbsp;</P><P>I am developing a firmware for a LCD display in which PCF8579 is used as a driver IC.</P><P>In my application, everything was working fine; however, PCF8579(1) generates unnecessary signals on its segment pin (0,1,2) without writing anything in RAM area.&nbsp;</P><P>I have used two PCF8579 IC because i intend to drive total 78 segments; for that reason, i required two ICs.</P><P>Backplanes are driven by PCF8578 IC.</P><P>So, kindly suggest your opinion. What should i do in this situation.</P><P>If anybody have any idea about it then please let me know.&nbsp;</P><P>I am waiting for your response !</P><P>Regards,</P><P>Nilesh Parmar : Embedded software engineer</P> Sat, 18 Mar 2023 12:39:09 GMT https://community.nxp.com/t5/Embedded-Software-and-Tools/To-solve-a-bug-in-PCF8579-LCD-Driver-IC/m-p/1617965#M356 nilesh2301 2023-03-18T12:39:09Z