topic LCD display flicker issue in Other NXP Products https://community.nxp.com/t5/Other-NXP-Products/LCD-display-flicker-issue/m-p/489058#M3471 <HTML><HEAD></HEAD><BODY><P>&nbsp; we are developing our LCD type meter using nxp LCD driver PCF8578HT. </P><P> There are two PCB board ,first one is CPU board over which we have put the micro controller and second is display board&nbsp; on which we have put the LCD display and LCD driver.&nbsp; </P><P style="margin-bottom: 12.0pt;">We have used the I2C mode for communication between micro controller and LCD driver.</P><P style="margin-bottom: 12.0pt;">We are using 1:16 Mux rate, 16 ROWS and 24 COLUMN, full graphics mode.</P><P style="margin-bottom: 12.0pt;">LCD display has 4 rows of 4 digits and 1 row of 8 digits,other segments are used for parameter unit indication.</P><P><STRONG>The first and second row is steady but the third ,fourth and fifth row is flickering.</STRONG></P><P style="margin-bottom: 12.0pt;">Pl find attached detail mapping documents of our LCD display.</P><P style="margin-bottom: 12.0pt;">&nbsp;&nbsp; pl find attached interfacing circuit, .C and .h files.</P><P>&nbsp; Pl try to solve the issue.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>I am not understood the below RAM allocation.Kindly elaborate.</P><P><span class="lia-inline-image-display-wrapper" image-alt="145438_145438.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/121353i8102FE18161FB0A8/image-size/large?v=v2&amp;px=999" role="button" title="145438_145438.png" alt="145438_145438.png" /></span><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_0.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/4621iB8732E2C5730B0F3/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_0.png" alt="pastedImage_0.png" /></span></P><P><STRONG>Original Attachment has been moved to: <A _jive_internal="true" href="https://community.nxp.com/docs/DOC-338469">source_files.zip</A></STRONG></P></BODY></HTML> Thu, 07 Apr 2016 12:07:01 GMT hemantgawande 2016-04-07T12:07:01Z LCD display flicker issue https://community.nxp.com/t5/Other-NXP-Products/LCD-display-flicker-issue/m-p/489058#M3471 <HTML><HEAD></HEAD><BODY><P>&nbsp; we are developing our LCD type meter using nxp LCD driver PCF8578HT. </P><P> There are two PCB board ,first one is CPU board over which we have put the micro controller and second is display board&nbsp; on which we have put the LCD display and LCD driver.&nbsp; </P><P style="margin-bottom: 12.0pt;">We have used the I2C mode for communication between micro controller and LCD driver.</P><P style="margin-bottom: 12.0pt;">We are using 1:16 Mux rate, 16 ROWS and 24 COLUMN, full graphics mode.</P><P style="margin-bottom: 12.0pt;">LCD display has 4 rows of 4 digits and 1 row of 8 digits,other segments are used for parameter unit indication.</P><P><STRONG>The first and second row is steady but the third ,fourth and fifth row is flickering.</STRONG></P><P style="margin-bottom: 12.0pt;">Pl find attached detail mapping documents of our LCD display.</P><P style="margin-bottom: 12.0pt;">&nbsp;&nbsp; pl find attached interfacing circuit, .C and .h files.</P><P>&nbsp; Pl try to solve the issue.</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>I am not understood the below RAM allocation.Kindly elaborate.</P><P><span class="lia-inline-image-display-wrapper" image-alt="145438_145438.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/121353i8102FE18161FB0A8/image-size/large?v=v2&amp;px=999" role="button" title="145438_145438.png" alt="145438_145438.png" /></span><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_0.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/4621iB8732E2C5730B0F3/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_0.png" alt="pastedImage_0.png" /></span></P><P><STRONG>Original Attachment has been moved to: <A _jive_internal="true" href="https://community.nxp.com/docs/DOC-338469">source_files.zip</A></STRONG></P></BODY></HTML> Thu, 07 Apr 2016 12:07:01 GMT https://community.nxp.com/t5/Other-NXP-Products/LCD-display-flicker-issue/m-p/489058#M3471 hemantgawande 2016-04-07T12:07:01Z