topic Re: PCF85363A Power-up question in Other NXP Products https://community.nxp.com/t5/Other-NXP-Products/PCF85363A-Power-up-question/m-p/638392#M4324 <HTML><HEAD></HEAD><BODY><P>Hi Michael,</P><P></P><P><SPAN style="color: #51626f; background-color: #ffffff;">Sorry for our late response. &nbsp;</SPAN></P><P></P><DIV><SPAN><SPAN lang="en-US">At VDD power up, all PCF85363A registers should be reset in Default Mode.&nbsp;</SPAN></SPAN><SPAN><SPAN lang="en-US">As stated on page 55 of the data sheet, the default frequency on INTA/ pin should be 32.768 kHz.</SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"><span class="lia-inline-image-display-wrapper" image-alt="image006.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/4293i87C3ADE95160A35B/image-size/large?v=v2&amp;px=999" role="button" title="image006.png" alt="image006.png" /></span></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"><span class="lia-inline-image-display-wrapper" image-alt="image007.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/4294i592697FDD3B64330/image-size/large?v=v2&amp;px=999" role="button" title="image007.png" alt="image007.png" /></span></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US">Best regards,</SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US">Tomas</SPAN></SPAN></DIV></BODY></HTML> Tue, 03 Jan 2017 19:32:04 GMT TomasVaverka 2017-01-03T19:32:04Z PCF85363A Power-up question https://community.nxp.com/t5/Other-NXP-Products/PCF85363A-Power-up-question/m-p/638391#M4323 <HTML><HEAD></HEAD><BODY><P>I am using a PCF85363A with a back-up battery. If the chip is powered up with the back-up battery first, the INTA output puts out 32.768kHz when VDD is applied. If it is powered with VDD first, the INTA output is at 1 sec. Is that correct operation?</P></BODY></HTML> Thu, 22 Dec 2016 19:29:09 GMT https://community.nxp.com/t5/Other-NXP-Products/PCF85363A-Power-up-question/m-p/638391#M4323 michaelolson 2016-12-22T19:29:09Z Re: PCF85363A Power-up question https://community.nxp.com/t5/Other-NXP-Products/PCF85363A-Power-up-question/m-p/638392#M4324 <HTML><HEAD></HEAD><BODY><P>Hi Michael,</P><P></P><P><SPAN style="color: #51626f; background-color: #ffffff;">Sorry for our late response. &nbsp;</SPAN></P><P></P><DIV><SPAN><SPAN lang="en-US">At VDD power up, all PCF85363A registers should be reset in Default Mode.&nbsp;</SPAN></SPAN><SPAN><SPAN lang="en-US">As stated on page 55 of the data sheet, the default frequency on INTA/ pin should be 32.768 kHz.</SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"><span class="lia-inline-image-display-wrapper" image-alt="image006.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/4293i87C3ADE95160A35B/image-size/large?v=v2&amp;px=999" role="button" title="image006.png" alt="image006.png" /></span></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"><span class="lia-inline-image-display-wrapper" image-alt="image007.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/4294i592697FDD3B64330/image-size/large?v=v2&amp;px=999" role="button" title="image007.png" alt="image007.png" /></span></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US"></SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US">Best regards,</SPAN></SPAN></DIV><DIV><SPAN><SPAN lang="en-US">Tomas</SPAN></SPAN></DIV></BODY></HTML> Tue, 03 Jan 2017 19:32:04 GMT https://community.nxp.com/t5/Other-NXP-Products/PCF85363A-Power-up-question/m-p/638392#M4324 TomasVaverka 2017-01-03T19:32:04Z