topic Re: What is the lowest power state for LPDDR SDRAM? in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/What-is-the-lowest-power-state-for-LPDDR-SDRAM/m-p/280832#M32249 <HTML><HEAD></HEAD><BODY><P>Please use section 18.4.5 (Low Power Operating Modes) of the i.MX27 Reference Manual.<BR />You can try Self Refresh Mode (section 18.4.5.1 Self Refresh Mode for SDRAM/LPDDR Devices)<BR />or </P><P>Precharge Power Down Mode (section 18.4.5.3 Precharge Power Down Mode).</P></BODY></HTML> Fri, 19 Jul 2013 03:12:28 GMT Yuri 2013-07-19T03:12:28Z What is the lowest power state for LPDDR SDRAM? https://community.nxp.com/t5/i-MX-Processors/What-is-the-lowest-power-state-for-LPDDR-SDRAM/m-p/280831#M32248 <HTML><HEAD></HEAD><BODY><P>I have a legacy design that includes an iMX27 and LPDDR.&nbsp; I am trying to take some measurements of the system power with various components powered off (or close to it) to calculate board overhead.&nbsp;&nbsp; </P><P></P><P>I would like to disable the SDRAM, but I don't know if just not configuring it is enough to set it in the lowest power mode.&nbsp; I am running application code from internal SRAM so I don't need the SDRAM at all.&nbsp; How do I power it off (or close to off) from the iMX27?&nbsp; Is there a mode I can put the SDRAM in that is essentially off? </P><P></P><P>Thanks!</P></BODY></HTML> Fri, 19 Jul 2013 02:50:48 GMT https://community.nxp.com/t5/i-MX-Processors/What-is-the-lowest-power-state-for-LPDDR-SDRAM/m-p/280831#M32248 nathanpalmer 2013-07-19T02:50:48Z Re: What is the lowest power state for LPDDR SDRAM? https://community.nxp.com/t5/i-MX-Processors/What-is-the-lowest-power-state-for-LPDDR-SDRAM/m-p/280832#M32249 <HTML><HEAD></HEAD><BODY><P>Please use section 18.4.5 (Low Power Operating Modes) of the i.MX27 Reference Manual.<BR />You can try Self Refresh Mode (section 18.4.5.1 Self Refresh Mode for SDRAM/LPDDR Devices)<BR />or </P><P>Precharge Power Down Mode (section 18.4.5.3 Precharge Power Down Mode).</P></BODY></HTML> Fri, 19 Jul 2013 03:12:28 GMT https://community.nxp.com/t5/i-MX-Processors/What-is-the-lowest-power-state-for-LPDDR-SDRAM/m-p/280832#M32249 Yuri 2013-07-19T03:12:28Z