8-bit MicrocontrollersのトピックMC9S08LG32 LCD Module Voltage? https://community.nxp.com/t5/8-bit-Microcontrollers/MC9S08LG32-LCD-Module-Voltage/m-p/188865#M14422 <HTML><HEAD></HEAD><BODY><P>I am using MC9S08LG32 (LQFP-80 package) with inbuilt LCD Module.</P><P>I am operating my core and other peripherals at 3.3 VDC.</P><P>Can I still operate my LCD Module from 5 VDC power-rail without damaging the controller.</P></BODY></HTML> Tue, 14 Aug 2012 18:10:42 GMT sandeepnaik 2012-08-14T18:10:42Z MC9S08LG32 LCD Module Voltage? https://community.nxp.com/t5/8-bit-Microcontrollers/MC9S08LG32-LCD-Module-Voltage/m-p/188865#M14422 <HTML><HEAD></HEAD><BODY><P>I am using MC9S08LG32 (LQFP-80 package) with inbuilt LCD Module.</P><P>I am operating my core and other peripherals at 3.3 VDC.</P><P>Can I still operate my LCD Module from 5 VDC power-rail without damaging the controller.</P></BODY></HTML> Tue, 14 Aug 2012 18:10:42 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/MC9S08LG32-LCD-Module-Voltage/m-p/188865#M14422 sandeepnaik 2012-08-14T18:10:42Z Re: MC9S08LG32 LCD Module Voltage? https://community.nxp.com/t5/8-bit-Microcontrollers/MC9S08LG32-LCD-Module-Voltage/m-p/188866#M14423 <HTML><HEAD></HEAD><BODY><P>Hello sandeepnaik,</P><P></P><P>The LG32 has an integrated LCD driver that can supply LCD waveforms for 5 V glass.&nbsp; You can use the on-chip charge pump to create the 5V source needed to drive the LCD when operating the MCU at 3.3V.</P><P></P><P>The only time you should connect VLL3 to 5 V is when the MCU voltage is set at 5 V.&nbsp; </P><P></P><P>The externally supplied voltages MUST NOT EXCEED VDD :smileysad:.</P><P></P><P>Check out the reference manual, LCD section&nbsp; <STRONG><STRONG style="font-size: 10pt; font-family: Helvetica-Bold;"><STRONG style="font-size: 10pt; font-family: Helvetica-Bold;"> </STRONG></STRONG></STRONG></P><P>Table 9-19. LCD Power Supply Options.</P><P><A href="http://cache.freescale.com/files/microcontrollers/doc/ref_manual/MC9S08LG32RM.pdf?fpsp=1">http://cache.freescale.com/files/microcontrollers/doc/ref_manual/MC9S08LG32RM.pdf?fpsp=1</A></P><P></P><P></P><P>Regards,</P><P>Philip :smileyhappy:</P></BODY></HTML> Mon, 10 Sep 2012 15:41:44 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/MC9S08LG32-LCD-Module-Voltage/m-p/188866#M14423 philip_drake 2012-09-10T15:41:44Z