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</o:shapelayout></xml><![endif]--></head><body lang=FR-CA link=blue vlink=purple><div class=WordSection1><p class=MsoPlainText><span lang=EN-CA>Some earlier posts warn about buying 'BRAND NEW' DS1225 or M48Z18<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA>non-volatile SRAM because of their date code not being any reliable<br>and the fact the inner battery starts to discharge at the IC<br>manufacturing time.. So a dated 2011 SRAM IC would already have<br>10 years of battery degradation.<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-CA>Well looking at the M48Z18-100PCI datasheets nothing denies this affirmation.<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA><br>But in the DS1225AB datasheets there is an important note that says:<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA><o:p> </o:p></span></p><p class=MsoPlainText><span style='mso-fareast-language:FR-CA'><img width=621 height=225 id="Image_x0020_1" src="cid:image003.jpg@01D73AAC.3E27CA60"></span><span lang=EN-CA><o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA>So if understand well here a brand new </span><span lang=EN-CA style='mso-fareast-language:FR-CA'>DS1225AB-70IND+ could be a good choice over the M48Z18-100PCI.<br>The battery life should start ONLY when I first apply external Vcc to the device.. ?<o:p></o:p></span></p><p class=MsoPlainText><span lang=EN-CA style='mso-fareast-language:FR-CA'><o:p> </o:p></span></p><p class=MsoPlainText><span lang=EN-CA style='mso-fareast-language:FR-CA'>JP</span><span lang=EN-CA><o:p></o:p></span></p><table class=MsoNormalTable border=0 cellpadding=0><tr><td style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal><span lang=EN-CA style='mso-fareast-language:FR-CA'><o:p> </o:p></span></p></td><td style='padding:.75pt .75pt .75pt .75pt'><p class=MsoNormal><span lang=EN-CA style='mso-fareast-language:FR-CA'><o:p> </o:p></span></p></td></tr></table><p class=MsoPlainText><span lang=EN-CA><o:p> </o:p></span></p></div></body></html>