topic Re: disable tamper function in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/disable-tamper-function/m-p/461094#M72391 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>The TAMPER pin is pulled down internally, but please check if&nbsp; External Tampering is <BR />disabled in SNVS_LPTDCR register. Correct power up sequence should be provided :<BR />"VDD_SNVS_IN supply must be turned ON before any other power supply.<BR />... <BR />If a coin cell is used to power VDD_SNVS_IN, then ensure that it is connected before any other</P><P>supply is switched on."</P><P><BR />Have a great day,<BR />Yuri</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Wed, 17 Feb 2016 08:26:18 GMT Yuri 2016-02-17T08:26:18Z disable tamper function https://community.nxp.com/t5/i-MX-Processors/disable-tamper-function/m-p/461093#M72390 <HTML><HEAD></HEAD><BODY><P>Hi</P><P>We use internel RTC, and found that pull high tamper will increase power consumption of rtc battery</P><P>1.If we pull low this pin (disable tamper), will cause any problem?</P><P>2.How to disable/enable tamper function in software? Default function is on or off?</P></BODY></HTML> Tue, 16 Feb 2016 10:05:59 GMT https://community.nxp.com/t5/i-MX-Processors/disable-tamper-function/m-p/461093#M72390 charleshuang 2016-02-16T10:05:59Z Re: disable tamper function https://community.nxp.com/t5/i-MX-Processors/disable-tamper-function/m-p/461094#M72391 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>The TAMPER pin is pulled down internally, but please check if&nbsp; External Tampering is <BR />disabled in SNVS_LPTDCR register. Correct power up sequence should be provided :<BR />"VDD_SNVS_IN supply must be turned ON before any other power supply.<BR />... <BR />If a coin cell is used to power VDD_SNVS_IN, then ensure that it is connected before any other</P><P>supply is switched on."</P><P><BR />Have a great day,<BR />Yuri</P><P></P><P>-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Wed, 17 Feb 2016 08:26:18 GMT https://community.nxp.com/t5/i-MX-Processors/disable-tamper-function/m-p/461094#M72391 Yuri 2016-02-17T08:26:18Z