View cxd8156q datasheet:

( ) CXD8156Q 1/3 IL00 ********** 16-BIT ADDER MULTIPLIER -TOP VIEW- 81 50 82 49 83 48 84 47 85 46 86 45 87 44 88 43 89 VDD(+5V) 42 90 GND VDD(+5V) 41 91 GND 40 92 NC 39 93 38 94 37 95 36 96 35 97 34 98 33 99 32 100 31 80 79 76 75 74 73 72 71 70 69 68 67 64 63 62 61 60 59 58 57 56 55 52 51 ( ) ( ) ( ) GND 77 GND 65 GND 54 V DD +5V 78 V DD +5V 66 V DD +5V 53 ( ) ( ) ( ) 1 2 3 V DD +5V 4 GND 5 6 7 8 9 10 11 12 13 14 V DD +5V 15 GND 16 17 18 19 20 21 22 23 24 25 26 27 GND 28 V DD +5V 29 30 ( ) CXD8156Q 2/3 PIN PIN PIN PIN I/O SYMBOL I/O SYMBOL I/O SYMBOL I/O SYMBOL NO. NO. NO. NO. 1 I A DATA 00 26 I/O B DATA 05 51 I K DATA 06 76 O Y DATA 11 2 I A DA