[volt-nuts] Fall of SRAM voltage in a 3457A without external power

Andrea Baldoni erm191ba3 at ermione.com
Mon Jan 25 10:12:52 EST 2016

On Mon, Jan 25, 2016 at 11:46:19AM +0000, Dr. David Kirkby (Kirkby Microwave Ltd) wrote:

> V). and well above the 2.0 V needed to hold the SRAM contents. Assuming the
> SRAM takes a constant current one would expect the voltage to fall linearly
> with time. If so, it would take 46 minutes to fall to 2.0 V even without
> battery power.

Hello David.
I think you can probably assume the SRAM idle current be proportional
to e(k*v) (an experimental k for some microcontrollers with SRAM I used
was 0.44), so it should decay even more slowly.

Best regards,
 Andrea Baldoni

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