| Pin# |
Name |
Description |
| 1, 2 |
VDD_5V |
5V Output, it can be used to power LCD modules |
| 11,20,29, 37,38,39,40, 45 |
DGND |
Ground |
| 3-10 |
Blue LSB to MSB |
RGB blue |
| 12-19 |
Green LSB to MSB |
RGB green |
| 21-28 |
Red LSB to MSB |
RGB red |
| 30 |
GPIOB25 |
available for users |
| 31 |
GPIOC15 |
occupied by FriendlyARM one wire technology to recognize LCD models and control backlight and implement resistive touch, not applicable for users |
| 32 |
XnRSTOUT Form CPU |
low when system is reset |
| 33 |
VDEN |
signal the external LCD that data is valid on the data bus |
| 34 |
VSYNC |
vertical synchronization |
| 35 |
HSYNC |
horizontal synchronization |
| 36 |
LCDCLK |
LCD clock, Pixel frequency |
| 41 |
I2C2_SCL |
I2C2 clock signal, for capacitive touch data transmission |
| 42 |
I2C2_SDA |
I2C2 data signal, for capacitive touch data transmission |
| 43 |
GPIOC16 |
interrupt pin for capacitive touch, used with I2C2 |
| 44 |
NC |
Not connected |