40-pin FPC at 0.5mm pitch is the standard for TFT LCD panels used with Raspberry Pi and Arduino display shields carrying RGB data and sync signals.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | VDD | Power supply | PWR |
| 2 | VDD | Power supply | PWR |
| 3 | GND | Ground | GND |
| 4 | GND | Ground | GND |
| 5-8 | R0-R3 | Red data bits | I/O |
| 9-13 | R4-R7/G0 | Red and green data | I/O |
| 14-19 | G1-G6 | Green data bits | I/O |
| 20-25 | B0-B5 | Blue data bits | I/O |
| 27 | DCLK | Pixel clock | I/O |
| 29 | HSYNC | Horizontal sync | I/O |
| 30 | VSYNC | Vertical sync | I/O |
| 31 | DEN | Data enable | I/O |