2 ms·
How difficult is it to harden against voltage glitching? Couldn't the manufacturer build the chip so that as soon as the voltage dropped below some reference i
by Teknoman117 5y ago
How difficult is it to harden against voltage glitching?
Couldn't the manufacturer build the chip so that as soon as the voltage dropped below some reference it asserts the reset line or cuts power or something?
- bri3d 5y agoFast brownout detection into reset is a hard problem. Especially as process nodes shrink. So the answer is difficult and it's a fairly high effort "can't you just..." Here's some fun literature to read: http://nice.kaist.ac.kr/files/attach/filebox/711/003/International%20Journals/6080719.pdf http://nice.kaist.ac.kr/files/attach/filebox/711/003/Interna... http://hajim.rochester.edu/ece/sites/kose/files/conferences/glsvlsi_19.pdf http://hajim.rochester.edu/ece/sites/kose/files/conferences/...
- R0b0t1 5y agoDepends where you draw your boundaries. Physical access is always going to be complicated, but on larger scales (and increasingly as you can make things smaller) you can have a cap tank that must accumulate enough charge to do reliable brownout detection before device powers on.