Note that QFN28-Atmel and QFN28-SiLabs still need verifying.
QFN28-SiLabs is quite differnt from NXP's specification.
- modules/INFO: added description of solder paste deposit dimensioning
rules (based on NXP's AN10365)
- modules/qfn.fpd (QFN32-VHHD-2, QFN32-VHHD-6): increased solder paste
deposits according to the rules
- qfn.fpd: package names now also include the variant (for now: SiLabs,
VHHD-2, or VHHD-6)
- qfn.fpd: inlarged center pad of QFN28-SiLabs (was QFN28) from 3.25 mm
to 3.3 mm
- qfn.fpd: reverted QFN32-VHHD6 (was QFN32) to original geomtry
- qfn.fpd: introduced QFN32-VHHD2 for the ATmega32U2
- qfn.fpd: distribute solder paste in little islands (in progress)
- qfn.fpd: deleted stray unused vector in root frame
- qfn.fpd: where were no measurements at all - added them
- qfn.fpd: parametrize 0.1 mm border between central pad and land pattern
and increase it from 0.1 mm to 5 mil (recommended by Adam Wang)
- qfn.fpd: define solder paste of central pad separately and give it a 5
mil border to the pad edge, 10 mil to the copper edge (parameters
recommended by Adam Wang)
