connections

The most common connector used for the 44780 based LCDs is 14 pins in a row, with pin centers 0.100" apart. The pins are wired as:

Pins	Description
1	Ground
2	Vcc
3	Contrast Voltage
4	"RS" Instruction/Register Select
5	"R/W" Read/Write LCD Registers
6	"E" Clock
7	D0
8	D1
9	D2
10	D3
11	D4
12	D5
13	D6
14	D7

1  VSS       8   DB1
2  VDD       9   DB2
3  Vo_       10  DB3
4  D/I_      11  DB4
5  R/W       12  DB5
6  E         13  DB6
7  DB0       14  DB7