[Arm-netbook] HummingBoard becomes partially what eoma would've been

joem joem at martindale-electric.co.uk
Mon Jul 7 07:52:13 BST 2014


>  all the other examples require tools, special handling (you cannot
> touch the gold edges or pins),

That it is hardly true these days. Inputs are protected with 2kV ESD
diodes for some time now - ever since days
of the A series CMOS was learned and the B series came out (decades
ago).

But it is still possible to get unprotected devices that operate
at high frequency such as GaAs MOSFETs
used for RF because the protection would slow it down too much.

(ESD precaution continues to be recommended for products
with exposed pins because it is not 100%
possible to be sure what the ESD is doing in every combination of
circuit design. The strength of ESD discharge can be very different
between different buildings. I remember in one tiled factory
space, the discharge to any earthed equipment could send one flying.)



More information about the arm-netbook mailing list