topic How to keep GPIO low at power on reset stage? in LPC Microcontrollers https://community.nxp.com/t5/LPC-Microcontrollers/How-to-keep-GPIO-low-at-power-on-reset-stage/m-p/697637#M28071 <HTML><HEAD></HEAD><BODY><P>Normally, GPIO default pull-up which cannot be changed by configuring register.</P><P>If I need to ensure GPIO at low level, how can I do?&nbsp;</P></BODY></HTML> Tue, 03 Oct 2017 12:45:26 GMT hubertwu 2017-10-03T12:45:26Z How to keep GPIO low at power on reset stage? https://community.nxp.com/t5/LPC-Microcontrollers/How-to-keep-GPIO-low-at-power-on-reset-stage/m-p/697637#M28071 <HTML><HEAD></HEAD><BODY><P>Normally, GPIO default pull-up which cannot be changed by configuring register.</P><P>If I need to ensure GPIO at low level, how can I do?&nbsp;</P></BODY></HTML> Tue, 03 Oct 2017 12:45:26 GMT https://community.nxp.com/t5/LPC-Microcontrollers/How-to-keep-GPIO-low-at-power-on-reset-stage/m-p/697637#M28071 hubertwu 2017-10-03T12:45:26Z Re: How to keep GPIO low at power on reset stage? https://community.nxp.com/t5/LPC-Microcontrollers/How-to-keep-GPIO-low-at-power-on-reset-stage/m-p/697638#M28072 <HTML><HEAD></HEAD><BODY><P>Hi Hubert Wu,</P><P></P><P>Unfortunately, there is no way to change the GPIO default state, you will need to add an external pull down resistor to place the pin in the desired state.</P><P><BR />Hope it helps!</P><P></P><P>Best Regards,<BR />Carlos Mendoza<BR />Technical Support Engineer</P></BODY></HTML> Tue, 03 Oct 2017 21:50:16 GMT https://community.nxp.com/t5/LPC-Microcontrollers/How-to-keep-GPIO-low-at-power-on-reset-stage/m-p/697638#M28072 Carlos_Mendoza 2017-10-03T21:50:16Z