This example code is written for the Crystalfontz CFAF240240A 1.3" TFT Family of displays. These displays use the ST7789H2 display controller and bring out the SPI interface for communication.
For more information about other TFT options, see our full list here.
Here are links to our active displays:
CFAF240240A3-013TN
Here are the breakout boards and dev kits:
CFAF240240A3-013TN-E1 display and adapter board
CFAF240240A3-013TN-E1-2 full display dev kit
An example schematic can be downloaded from here.
| CFAF240240A Pin | Seeeduino Pin | Pin Function | Seeeduino Pin SPI |
|---|---|---|---|
| 1 | N/A | K (LED-) | A 20mA LED driver should be used |
| 2 | N/A | A (LED+) | A 20mA LED driver should be used |
| 3 | DNC | CABC PWM | PWM out to control the backlight. Leave open if not in use. |
| 4 | DNC | CABC EN | Enable pin to control the backlight. Leave open if not in use. |
| 5 | GND | GND | Ground |
| 6 | 3V3 | VDD | Supply voltage |
| 7 | 3V3 | VDDIO | I/O voltage |
| 8 | GND | GND | Ground |
| 9 | D13 | SCLK | Serial clock |
| 10 | D11 | SDA | Serial input |
| 11 | D12 | SDO | Serial output |
| 12 | D8 | D/C | Data / Command |
| 13 | D10 | /CS | Chip select |
| 14 | GND | GND | Ground |
| 15 | D9 | /RST | Reset Pin |
| 16 | 3V3 | IM3 | Interface Mode |
| 17 | DNC | TE | Tearing effect pin. Leave open if not in use. |
| 18 | GND | GND | Ground |
Additional accessories for the products can be found at the bottom of each of the product pages.