LCDNotes

Pin Functions

Pin Name Function Wire Color Notes
VSS GND Black
VDD +5V Red
LED+ +5V Red Backlight enable/power
VLC GND Black Contrast adjust, needs to be VSS - VLC > 3V
E Enable Blue
RS Register Select Green 1 = data, 0 = instruction
R/W Read/Write Yellow 1 = Read, 0 = Write
DB7 Data bus White
DB6 Data bus White
DB5 Data bus White
DB4 Data bus White

Register Selection

RS RW Function
0 0 Instruction Write
0 1 Read busy flag (DB7), Count Address (DB6 - DB0)
1 0 Data Write
1 1 Data Read
  • When writing to the registers, make sure the busy flag isn't asserted
  • In 4bit mode, clock in DB7-DB4 then DB3-DB0 after toggling E inbetween
    • Check figure 5 on page 23 on the datasheet

Supplies to build the connector

  • 4 Black Wires
  • 2 Red Wires
  • 4 White Wires
  • 1 Blue Wire
  • 1 Green Wire
  • 1 Yellow Wire