<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">Ono totiz neni jasne proc integrovane nabijeni kdyz staci pridat D respektive D+R. A kdyz se vejde scap respektive baterie, obvykle nebyva problem je umistit take. Pokud uz by byl s umistenim problem, je treba to jednoznacne rici. Dalsi podstanou veci je jestli chci psat vlastni obsluhu nebo chci pouzit uz hotovou knihovnu. Pokud mi na nicem z toho nezalezi, je rtc dle pozadavku opravdu hromada a musim pri vyberu doplnit dalsi faktory. Vybirat podle toho jestli nejaky turby nebo franta pouziva nejaky obskurni rtc z nejakych podivnych duvodu neni zrovna dobra cesta vyberu soucastek. Obvykle vybiram podle toho aby splnila pokud mozno vsechny pozadavky a mohl jsem pouzit uz hotovy driver (neb jsem liny jak ves).</div><div dir="ltr"><br></div><div dir="ltr">T</div><div dir="ltr"><br></div><div dir="ltr"><br>5. 1. 2019 v 14:08, Radek Koutský <<a href="mailto:radek.koutsky@gmail.com">radek.koutsky@gmail.com</a>>:<br><br></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="Generator" content="Microsoft Word 14 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--><div class="WordSection1"><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black">Nevím, co na tom je k nepochopení. Například první v pořadí MCP7940M nemá vstup na zálohování baterií, má pouze vstup na hlavní napájení. DS1302 má oddělené piny a záložní baterii umí v případě hlavního napájení nabíjet.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black">DS1302 neumí přerušovat po nastaveném čase. MCP7940 má MFP pin, kterému lze přiřadit CLKOUT….takže bych je potřeboval spárovat.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black">Předpokládám, že něco bude existovat, proto odpověď „bude jich hromada“ je fajn, ale čekal jsem něco konkrétního, že někdo něco používá. <o:p></o:p></span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black">Jdu se tedy prohrabat datasheety.<o:p></o:p></span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black">RK<o:p></o:p></span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"><o:p> </o:p></span></p><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:CS">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:CS"> Hw-list [<a href="mailto:hw-list-bounces@list.hw.cz">mailto:hw-list-bounces@list.hw.cz</a>] <b>On Behalf Of </b>Tomas Urbanek<br><b>Sent:</b> Saturday, January 5, 2019 1:09 PM<br><b>To:</b> HW-news<br><b>Subject:</b> Re: RTCC obvod<o:p></o:p></span></p></div></div><p class="MsoNormal"><o:p> </o:p></p><div><p class="MsoNormal">Moc to nechapu??? Vsechny rtc ic maji zalohovani baterii/scap. S periodickym nebo event vystupem preruseni je jich taky hromada. <o:p></o:p></p></div><div><p class="MsoNormal"><o:p> </o:p></p></div><div><p class="MsoNormal">T <o:p></o:p></p></div><div><p class="MsoNormal" style="margin-bottom:12.0pt"><br>5. 1. 2019 v 12:35, Radek Koutský <<a href="mailto:radek.koutsky@gmail.com">radek.koutsky@gmail.com</a>>:<o:p></o:p></p></div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><div><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black">Zdravím,</span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"> </span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black">hledání nějaký obvod RTCC, který by měl vlastnosti:</span><o:p></o:p></p><p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span style="font-family:"Verdana","sans-serif""><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman""> </span></span></span><!--[endif]--><span style="font-family:"Verdana","sans-serif";color:black">Jednoduchá sběrnice I2C, SPI</span><o:p></o:p></p><p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span style="font-family:"Verdana","sans-serif""><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman""> </span></span></span><!--[endif]--><span style="font-family:"Verdana","sans-serif";color:black">Provoz na záložní baterii</span><o:p></o:p></p><p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span style="font-family:"Verdana","sans-serif""><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman""> </span></span></span><!--[endif]--><span style="font-family:"Verdana","sans-serif";color:black">nabíjení záložní baterie</span><o:p></o:p></p><p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span style="font-family:"Verdana","sans-serif""><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman""> </span></span></span><!--[endif]--><span style="font-family:"Verdana","sans-serif";color:black">SMD provedení</span><o:p></o:p></p><p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><!--[if !supportLists]--><span style="font-family:"Verdana","sans-serif""><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman""> </span></span></span><!--[endif]--><span style="font-family:"Verdana","sans-serif";color:black">nejlépe 8pin (SOIC, TSSOP, …) ale to až taková podmínka být nemusí</span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"> </span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black">v podstatě až sem to splňuje můj oblíbený DS1302.</span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"> </span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black">Ale potřeboval bych ještě jednu funkci a to je volba přerušení do MCU. Stačilo by mi každou vteřinu, nebo jsou i různé, ale na tom netrvám. Nicméně toto už nesplňuje DS1302, u něj je potřeba si čas vždy vytáhnout. Koukal jsem zatím na nějaké obyčejné RTCC obvody a hromada z nich umí přerušení, ale zase třeba nemají provoz na baterii.</span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"> </span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"> </span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black">Než se zabořím do hledání, neměl by někdo tip na vhodný RTCC obvod?</span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"> </span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black"> </span><o:p></o:p></p><p class="MsoNormal"><span style="font-family:"Verdana","sans-serif";color:black">Díky RK </span><o:p></o:p></p></div></blockquote><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt"><div><p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:CS">_______________________________________________<br>HW-list mailing list - sponsored by <a href="http://www.HW.cz">www.HW.cz</a><br><a href="mailto:Hw-list@list.hw.cz">Hw-list@list.hw.cz</a><br><a href="http://list.hw.cz/mailman/listinfo/hw-list">http://list.hw.cz/mailman/listinfo/hw-list</a><o:p></o:p></span></p></div></blockquote></div></div></blockquote><blockquote type="cite"><div dir="ltr"><span>_______________________________________________</span><br><span>HW-list mailing list - sponsored by <a href="http://www.HW.cz">www.HW.cz</a></span><br><span><a href="mailto:Hw-list@list.hw.cz">Hw-list@list.hw.cz</a></span><br><span><a href="http://list.hw.cz/mailman/listinfo/hw-list">http://list.hw.cz/mailman/listinfo/hw-list</a></span><br></div></blockquote></body></html>