name: PCF8566 function: LCD driver package: DIP40,40 manufacturer: Philips +--()--+ sda | 1 40| s23 scl | 2 39| s22 sync | 3 38| s21 clk | 4 37| s20 Vdd | 5 36| s19 osc | 6 35| s18 a0 | 7 34| s17 a1 | 8 33| s16 a2 | 9 32| s15 sa0 |10 31| s14 Vss |11 30| s13 Vlcd |12 29| s12 bp0 |13 28| s11 bp2 |14 27| s10 bp1 |15 26| s9 bp3 |16 25| s8 s0 |17 24| s7 s1 |18 23| s6 s2 |19 22| s5 s3 |20 21| s4 +------+ This pinout came from the Chipdir: http://www.chipdir.org/