Due　to　the　progress　of　manufacturing　process,　the　minimum　width　(MW)　constraint　of　6TPPNN　cells　incurs　a　new　challenge　in　modern　circuit　designs.　This　paper　presents　the　first　work　to　address　general　6T&6TPPNN　cell　legalization　with　minimum　width　constraint　and　fragmentation　effect.　We　first　propose　a　MW-aware　clustering　algorithm　to　fix　MW　constraint,　and　then　find　an　optimal　region　for　each　cluster　with　minimizing　wirelength.　Furthermore,　we　apply　a　fragmentation-effect　aware　cell　moving　technique　to　mitigate　the　fragmentation　effect.　After　6TPPNN　cluster　transforming,　the　6TPPNN　cells/clusters　can　be　treated　as　triple-row-height　cells.　Finally,　we　formulate　our　general　6T&6TPPNN　cell　legalization　problem　as　a　quadratic　programming　problem,　which　is　efficiently　solved　by　a　modulus-based　matrix　splitting　iteration　method.　Experimental　results　show　that　our　algorithm　can　achieve　high-quality　results　for　this　problem　and　is　very　robust　for　resolving　all　MW　constraint　and　effectively　mitigating　the　fragmentation　effect　in　a　reasonable　runtime.　©　2019　IEEE.