View hd647180x0cp6 datasheet:

HD647180X0CP6 (1/5) IL00 C-MOS 8-BIT MICRO PROCESSING UNIT —TOP VIEW— 12 74 13 73 14 72 15 71 16 70 17 69 18 68 19 67 GND 20 66 21 65 22 64 NC NC 23 63 24 62 25 61 26 60 27 59 28 58 29 57 30 56 31 55 32 54 9 8 7 6 4 3 2 75 11 10 84 83 81 80 79 78 77 76 NC 1 V DD 5 GND 82 V DD GND NC NC 53 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 HD647180X0CP6 (2/5) MODE 0 MODE 1 MODE 2 PROM MODE PIN No. I/O SIGNAL I/O SIGNAL I/O SIGNAL I/O SIGNAL 1 — NC — NC — NC — NC 2 I MP0 I MP0 I MP0 I MP0 3 I XTAL I XTAL I XTAL I XTAL 4 I EXTAL I EXTAL I EXTAL I EXTAL 5 — VDD — VDD — VDD — VDD 6 I/O PE7 I I — NC WAIT WAIT 7 I/O PE6 O O — NC BUSACK BUSACK 8 I/O PE5 I I — NC BUSREQ BUSREQ 9 I I I —