https://community.nxp.com/t5/LPC-Microcontrollers/LPC54018-VDDA/m-p/1184099#M42894 <P>Looking at the LCP user manual (Page 1074) there is a line that says "The supply voltage VDD must be equal or lower than VDDA." I can find no similar statement in the datasheet; Table 12 (p. 79) gives the VDDA range as 2.7 - 3.6 V, making no mention of VDD.</P><DIV>&nbsp;</DIV><DIV>I was wondering what issue this may cause moving forward. I missed this line while doing the first prototype spin and have VDD running at 3.3v and VDDA running at 3.0v. Pushing forward with testing on this first spin I would like to know what issues I should expect to see with this configuration. So far validation has yet to present any issues.</DIV> Mon, 16 Nov 2020 23:08:46 GMT smiller1 2020-11-16T23:08:46Z https://community.nxp.com/t5/LPC-Microcontrollers/LPC54018-VDDA/m-p/1184099#M42894 <P>Looking at the LCP user manual (Page 1074) there is a line that says "The supply voltage VDD must be equal or lower than VDDA." I can find no similar statement in the datasheet; Table 12 (p. 79) gives the VDDA range as 2.7 - 3.6 V, making no mention of VDD.</P><DIV>&nbsp;</DIV><DIV>I was wondering what issue this may cause moving forward. I missed this line while doing the first prototype spin and have VDD running at 3.3v and VDDA running at 3.0v. Pushing forward with testing on this first spin I would like to know what issues I should expect to see with this configuration. So far validation has yet to present any issues.</DIV> Mon, 16 Nov 2020 23:08:46 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC54018-VDDA/m-p/1184099#M42894 smiller1 2020-11-16T23:08:46Z https://community.nxp.com/t5/LPC-Microcontrollers/LPC54018-VDDA/m-p/1185047#M42915 <P>Hi</P> <P>Please follow the UM statement of “The supply voltage VDD must be equal or lower than VDDA.”</P> <P>Exceeding of operating requirements may lead in device malfunction (reversible) or reduce life.</P> <P>&nbsp;</P> <P>Best Regards</P> <P>Jun Zhang</P> Wed, 18 Nov 2020 08:25:28 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC54018-VDDA/m-p/1185047#M42915 ZhangJennie 2020-11-18T08:25:28Z