Alphanumeric LCD MC42004A6WK-BNMLW-V2

Blue/white 16x4 LCD

LCD display module pinout:

1. VSS (Ground, ie -)
2. VCC (+5V)
3. V0 (Contrast adjustment)
4. RS (Register Select, RS). RS=0: Command, RS=1: Data
5. RW (Read/Write, R/W). R/W=0: Write, R/W=1: Read (This pin is optional due to the fact that most of the time you will only want to write to it and not read. Therefore, in general use, this pin will be permanently connected directly to ground.)
6. E (Clock) (Enable). Falling edge triggered
7. D0 (Bit 0) (Not used in 4-bit operation)
8. D1 (Bit 1) (Not used in 4-bit operation)
9. D2 (Bit 2) (Not used in 4-bit operation)
10. D3 (Bit 3) (Not used in 4-bit operation)
11. D4 (Bit 4)
12. D5 (Bit 5)
13. D6 (Bit 6)
14. D7 (Bit 7)
15. A (Backlight LED Anode, +)
16. K (Backlight LED Cathode, -)