LPC Microcontrollers中的主题 LPC812 Current Consumption https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649266#M25784 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>I am trying to replicate the current/power measurements of the LPC812 board. I have downloaded the AN11561 application note and source code from NXP and I downloaded the code for low power modes on my board.</P><P></P><P>However, I am getting ~3.2mA current consumption when in active mode and ~1.1mA when in sleep mode which is far off from the expected values. According to AN11561 and the datasheet of my microcontroller I would expect to see ~1mA when in active mode and ~0.7mA when in sleep mode.</P><P></P><P>Any suggestions on the cause behind the difference between the measured and the theoretical value?</P><P></P><P>Thanks in advance,<BR />Theo</P></BODY></HTML> Fri, 27 Jan 2017 12:35:44 GMT theodorosveryki 2017-01-27T12:35:44Z LPC812 Current Consumption https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649266#M25784 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>I am trying to replicate the current/power measurements of the LPC812 board. I have downloaded the AN11561 application note and source code from NXP and I downloaded the code for low power modes on my board.</P><P></P><P>However, I am getting ~3.2mA current consumption when in active mode and ~1.1mA when in sleep mode which is far off from the expected values. According to AN11561 and the datasheet of my microcontroller I would expect to see ~1mA when in active mode and ~0.7mA when in sleep mode.</P><P></P><P>Any suggestions on the cause behind the difference between the measured and the theoretical value?</P><P></P><P>Thanks in advance,<BR />Theo</P></BODY></HTML> Fri, 27 Jan 2017 12:35:44 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649266#M25784 theodorosveryki 2017-01-27T12:35:44Z Re: LPC812 Current Consumption https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649267#M25785 <HTML><HEAD></HEAD><BODY><P>Hi Theodoros,</P><P></P><P>Have you de-soldered the trimming potentiometer? It needs to be de-soldered to achieve the correct current consumption.</P><P></P><P>Hope it helps!</P><P></P><P>Best Regards,<BR />Carlos Mendoza<BR />Technical Support Engineer</P></BODY></HTML> Tue, 31 Jan 2017 21:46:48 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649267#M25785 Carlos_Mendoza 2017-01-31T21:46:48Z Re: LPC812 Current Consumption https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649268#M25786 <HTML><HEAD></HEAD><BODY><P>Hi Carlos,<BR /><BR />Thanks a lot for your reply - I really appreciate it.&nbsp;<BR /><BR />Yes, the trimming potentiometer has been removed and external power supply has been tested as well, giving the same results. Any other potential sources of error?<BR /><BR />Thanks,<BR />Theo</P></BODY></HTML> Wed, 01 Feb 2017 09:38:27 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649268#M25786 theodorosveryki 2017-02-01T09:38:27Z Re: LPC812 Current Consumption https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649269#M25787 <HTML><HEAD></HEAD><BODY><DIV class=""><P>Hi Theodoros,</P><P style="min-height: 8pt; padding: 0px;">&nbsp;</P>Apologies for the delay. Are you modifying the example code or you are using the project as provided in the application note? <BR /><P style="min-height: 8pt; padding: 0px;"></P><P style="min-height: 8pt; padding: 0px;">Thanks in advance for your response!</P><P style="min-height: 8pt; padding: 0px;"></P><P>Best Regards,<BR />Carlos Mendoza<BR />Technical Support Engineer</P></DIV></BODY></HTML> Tue, 07 Mar 2017 22:34:40 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649269#M25787 Carlos_Mendoza 2017-03-07T22:34:40Z Re: LPC812 Current Consumption https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649270#M25788 <HTML><HEAD></HEAD><BODY><P>Hi <A class="jx-jive-macro-user" href="https://community.nxp.com/people/carlosmendoza">carlosmendoza</A>‌,<BR /><BR />Thank you very much for your reply.&nbsp;<BR /><BR />I am using the project provided in the application note <EM>without</EM> any alterations whatsoever.</P><P></P><P>Thanks,<BR />Theo</P></BODY></HTML> Tue, 07 Mar 2017 22:43:46 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649270#M25788 theodorosveryki 2017-03-07T22:43:46Z Re: LPC812 Current Consumption https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649271#M25789 <HTML><HEAD></HEAD><BODY><DIV class=""><DIV class=""><P>Hi Theodoros,</P><P style="min- padding: 0px;">&nbsp;</P>I have checked and I get the same results, this is because the current measured corresponds to both the the LPC812 MCU and the LPC-Link circuit.<BR /><P style="min-height: 8pt; padding: 0px;">&nbsp;</P><P>Best Regards,<BR />Carlos Mendoza<BR />Technical Support Engineer</P></DIV></DIV></BODY></HTML> Thu, 09 Mar 2017 23:48:51 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC812-Current-Consumption/m-p/649271#M25789 Carlos_Mendoza 2017-03-09T23:48:51Z