VDD1PF0-OSC-IN2PF1-OSC-OUT3NRST4VDDA5PA06PA17PA28PA39PA410PA511PA612PA713PB014PB115VSS16VDD17PA818PA919PA1020PA1121PA1222PA1323PA1424PA1525PB326PB427PB528PB629PB730BOOT031VSS32