Dedicated Pin 44-Pin PLCC 44-Pin TQFP 100-Pin TQFP INPUT/GCLK1 43 37 87 INPUT/GCLRn 1 39 89 INPUT/OE1 44 38 88 INPUT/OE2/GCLK2 2 40 90 TDI 7 1 4 TMS 13 7 15 TCK 32 26 62 TDO 38 32 73 GNDINT 22, 42 16, 36 38, 86 GNDIO 10, 17, 30, 36 4, 11, 24, 30 11, 26, 33, 43, 53, 59, 65, 74, 78, 95 VCCINT (3.3 V Only) 3, 23 17, 41 39, 91 VCCIO (2.5 V or 3.3 V) 15, 35 9, 29 3, 18, 34, 51, 66, 82 No Connect (N.C.) - - 1, 2, 5, 7, 22, 24, 27, 28, 49, 50, 55, 70, 72, 77 Total User I/O Pins 34 34 66