name: PCF8569 function: LCD colum driver package: DIP56,56 manufacturer: Philips +--()--+ sda | 1 56| c0 scl | 2 55| c1 sync | 3 54| c2 clk | 4 53| c3 Vss | 5 52| c4 test | 6 51| c5 sa0 | 7 50| c6 a3 | 8 49| c7 a2 | 9 48| c8 a1 |10 47| c9 a0 |11 46| c10 Vdd |12 45| c11 nc |13 44| c12 v3 |14 43| c13 v4 |15 42| c14 Vlcd |16 41| c15 c39 |17 40| c16 c38 |18 39| c17 c37 |19 38| c18 c36 |20 37| c19 c35 |21 36| c20 c34 |22 35| c21 c33 |23 34| c22 c32 |24 33| c23 c31 |25 32| c24 c30 |26 31| c25 c29 |27 30| c26 c28 |28 29| c27 +------+ This pinout came from the Chipdir: http://www.chipdir.org/