vendor
Chips
MachXO: 130 nm
LatticeXP2: 90nm low-K + copper
http://www.latticesemi.com/~/media/LatticeSemi/Documents/QualityAssurance/IM/LatticeXP2ProductFamilyQualificationSummary.pdf?document_id=50282
MachXO2/3, ice65: 65 nm
ice40: 40 nm