How to do supplying the external battery power to sram in using upsd3254?

xiebintj · ‎2005-08-23

Posted on August 24, 2005 at 02:25

xiebintj · ‎2011-05-17

Posted on May 17, 2011 at 12:08

Now I meet with an important question in upsd3254, I want to supply external power to internal sram, not using the internal power supplying to internal sram,even if the chip power is still on.How can I do it? Any ideas are helpful,Thanks :-[

:-[

ms_arefnasab · ‎2011-05-17

Posted on May 17, 2011 at 12:08

hello,

you must define PC2 pin of UPSD in PsdSoft as sram standby voltage input,then connect this pin to battery backup circuits.

;)