topic WAKEUP External PU in LPCXpresso IDE https://community.nxp.com/t5/LPCXpresso-IDE/WAKEUP-External-PU/m-p/535599#M4694 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by dfaucher on Wed Jul 21 13:14:03 MST 2010</STRONG><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I'm working on a portable solution (battery powered).&nbsp; I want to use deep power-down mode when the system is powered by the battery and idle. The user manual says "This pin must be pulled HIGH externally to enter Deep power-down mode".&nbsp; How much current is needed by the WAKEUP pin to consider it as a HIGH level? I want to reduce down the pull-up current to the minimum to not drain my battery to fast, any idea?</SPAN><BR /><BR /><SPAN>Thanks</SPAN><BR /><BR /><SPAN>DF</SPAN><P><STRONG>Original Attachment has been moved to: <A _jive_internal="true" href="https://community.nxp.com/docs/DOC-338211">1100558_lpc_swu.zip</A></STRONG></P></BODY></HTML> Wed, 15 Jun 2016 21:55:22 GMT lpcware 2016-06-15T21:55:22Z WAKEUP External PU https://community.nxp.com/t5/LPCXpresso-IDE/WAKEUP-External-PU/m-p/535599#M4694 <HTML><HEAD></HEAD><BODY><STRONG>Content originally posted in LPCWare by dfaucher on Wed Jul 21 13:14:03 MST 2010</STRONG><BR /><SPAN>Hi,</SPAN><BR /><BR /><SPAN>I'm working on a portable solution (battery powered).&nbsp; I want to use deep power-down mode when the system is powered by the battery and idle. The user manual says "This pin must be pulled HIGH externally to enter Deep power-down mode".&nbsp; How much current is needed by the WAKEUP pin to consider it as a HIGH level? I want to reduce down the pull-up current to the minimum to not drain my battery to fast, any idea?</SPAN><BR /><BR /><SPAN>Thanks</SPAN><BR /><BR /><SPAN>DF</SPAN><P><STRONG>Original Attachment has been moved to: <A _jive_internal="true" href="https://community.nxp.com/docs/DOC-338211">1100558_lpc_swu.zip</A></STRONG></P></BODY></HTML> Wed, 15 Jun 2016 21:55:22 GMT https://community.nxp.com/t5/LPCXpresso-IDE/WAKEUP-External-PU/m-p/535599#M4694 lpcware 2016-06-15T21:55:22Z