This is example Seeeduino (Arduino clone) software for the Crystalfontz CFAF240400C1-030Tx family of displays.
This display is a 3 inch, 240x400, full color, TFT. It come as a non-touch or can have a capacitive touch screen attached to the display. The display is driven by a Sitronix ST7796s display controller and the capacitive touch is controlled by a FocalTech FT636G.
These products can be found here:
Cap Touch - CFAF240400C1-030TC
Non Touch - CFAF240400C1-030TN
Additionally, these displays are available with an EVE controller:
Cap Touch with EVE FT811 - CFA240400E0-030TC
Non Touch with EVE FT811 - CFA240400E0-030TN
| ARD | Port | CFAF240400C1 | Function - Parallel |
|---|---|---|---|
| 3.3V | #1-2,33-34,42 | POWER 3.3V | |
| GND | #3,5-8,28,35-41 | GROUND | |
| A0 | PORTC | #29 | Read (RD) |
| A1 | PORTC | #30 | Write (WR) |
| A2 | PORTC | #31 | Register Select (RS) |
| A3 | PORTC | #4 | Reset (RESET) |
| D8 | PORTC | #32 | Chip Enable Signal (CS) |
| PORTC | #29 | Back Light (BL) | |
| D0 | PORTD | #26 | LCD_D10 (DB0) |
| D1 | PORTD | #25 | LCD_D11 (DB1) |
| D2 | PORTD | #24 | LCD_D12 (DB2) |
| D3 | PORTD | #23 | LCD_D13 (DB3) |
| D4 | PORTD | #22 | LCD_D14 (DB4) |
| D5 | PORTD | #21 | LCD_D15 (DB5) |
| D6 | PORTD | #20 | LCD_D16 (DB6) |
| D7 | PORTD | #19 | LCD_D17 (DB7) |
| ARD | Port | CFAF240400C1 | Function - Parallel |
|---|---|---|---|
| 3.3V | #2,3 | POWER 3.3V | |
| GND | #1,8 | GROUND | |
| D9 | PORTC | #6 | Interrupt (INTERRUPT) |
| 3.3V | PORTC | #7 | Reset (TCH_RESET) |
| SDA | PORTC | #5 | I2C SDA (I2C_SDA) |
| SCL | PORTD | #4 | I2C SCL (I2C_SCL) |
| microSD Pin | Seeeduino Pin | Connection Description |
|---|---|---|
| 2 (CS) | 10 | SD CS |
| 3 (DI) | 11 | SD MOSI |
| 4 (VDD) | 3.3V | +3.3V Power |
| 5 (SCLK) | 13 | SD SCLK |
| 6 (VSS) | GND | Ground |
| 7 (DO) | 12 | SD MISO |
microSD connection is optional