[HH] The Mystery Of Zombie RAM
Tom Metro
tmetro+hhacking at gmail.com
Mon Mar 24 16:21:55 EDT 2014
http://hackaday.com/2014/03/06/the-mystery-of-zombie-ram/?utm_content=buffer876fb&utm_medium=social&utm_source=twitter.com&utm_campaign=buffer
Josh had a little project where he needed to keep a variable in RAM
while a microcontroller was disconnected from a power source. ... He
found an ATTiny can keep the RAM alive for a variable amount of time -
somewhere between 150ms and 10 minutes. Wanting to understand this
variability, he decided to solve the mystery of the zombie RAM.
[Spoiler hint: they key to getting the RAM to stay working for up to 10
minutes was having an LED in the circuit.]
-Tom
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