On 24 January 2016 at 22:16, Poul-Henning Kamp <p...@phk.freebsd.dk> wrote:
> -------- > In message < > canx10hcknsnxczjx8gccd2-t0j-jom7ybmncgdvis9ic3yv...@mail.gmail.com> > , "Dr. David Kirkby (Kirkby Microwave Ltd)" writes: > > >The SRAM actually gets about 4.8 V > >when on mains, so even a fresh Lithium Thionyl Chloride cell, which would > >be more than 3.6 V off load, would not be too much for the SRAM. So I > think > >I am safe for now, but given the cell is at least 11 years old (probably > >much older), it is living on borrowed time. > > The one footnote to that is that some SRAMs go into a special "hibernate" > state when VCC drops below a certain threshold. If this SRAM has that, > you want to make sure the threshold is above the battery voltage. > Thank you. That is certainly important if that's the case. I can't seem to find a data sheet on the exact SRAM in my 3457A (Toshiba TC5564PL-15), so difficult to know. Dave _______________________________________________ volt-nuts mailing list -- volt-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
