name:         PCF8577
function:     I2C LCD direct/duplex driver
package:      DIP40,40
manufacturer: Philips

    +--()--+
s32 | 1  40| sda
s31 | 2  39| scl
s30 | 3  38| Vss
s29 | 4  37| a0(osc)
s28 | 5  36| a1
s27 | 6  35| Vdd
s26 | 7  34| a2(bp2)
s25 | 8  33| bp1
s24 | 9  32| s1
s23 |10  31| s2
s22 |11  30| s3
s21 |12  29| s4
s20 |13  28| s5
s19 |14  27| s6
s18 |15  26| s7
s17 |16  25| s8
s16 |17  24| s9
s15 |18  23| s10
s14 |19  22| s11
s13 |20  21| s12
    +------+


This pinout came from the Chipdir:
http://www.chipdir.org/