Panel Wiring Information
Connections to LCD, Rotary Encoder, Pushbuttons
Device | Pin Name | Pin # | J7 Signal | J7 Pin # |
LCD | DB7..DB4 | 14..11 | P2.3..P2.0 | 4..1 |
LCD | R/W* | 5 | P2.5 | 6 |
LCD | RS | 4 | P2.4 | 5 |
LCD | E | 6 | P3.4 | 8 |
LCD | VSS | 1 | GND | 14 |
LCD | VCC | 2 | N/A | N/A |
LCD | VEE | 3 | N/A | N/A |
Encoder | A | 2 | P3.2 | 11 |
Encoder | B | 4 | P3.3 | 13 |
Encoder | GND | 1, 5 | GND | 14 |
Encoder | VCC | 3 | N/A | N/A |
Buttons | rows | N/A | P2.3..P2.0 | 4..1 |
Buttons | columns | N/A | P3.7..P3.5 | 12, 10, 9 |