4168 "XRAM" in place of 4364 SRAM

From: silverdr_at_wfmh.org.pl Date: Fri, 28 Jun 2013 22:58:05 +0200 Message-Id: <0CAF31B6-9F4A-4BB6-967A-CB737CB53BEF@wfmh.org.pl>

I have a nice pile of 4168 chips and wanted to use them instead of 6264/4364 SRAMs (they are pin compatible). But I am puzzled with the datasheet.. the chip supposedly should be able to do "auto refresh" but I never used it before and it seems than neither grounding nor pulling up the _RFSH line makes it work. Has anyone of you had some experience with this/similar chip used in place of normal SRAM?

-- 
SD!
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