2.7 Graphics Connectors or GFX Card Interface
The PIC32CZ CA80/CA90 Curiosity Ultra development board is designed with a modular graphics interface. This interface enables using several graphics cards, which allow for expandability and different use cases. A 565 adapter card can be purchased separately, which takes 16-bit parallel LCD data and converts it to 24-bit data. This card also provides access to ADC for resistive touch-screens, therefore an external controller is not needed. Refer to the following table for pin descriptions.
| Pin Number | Name | Description | Port/Pin |
|---|---|---|---|
| 1 | GND | Ground | - |
| 2 | GND | Ground | - |
| 3 | MCLR | Host Clear, Controlled by the debuggers. Allows for a complete system reboot. | TARGET_RESETn |
| 4 | IRQ1 (LCD Touch) | Interrupt request line for cap touch device | PF1 |
| 5 | 5.0V VCC | 5.0V | - |
| 6 | IRQ2 (Q Touch) | Interrupt request line for Q touch devices | PF2 |
| 7 | LCDEN | LCD Data Enable | PC5 |
| 8 | IRQ3 (Display Controllers) | Interrupt request line for external display controllers | PF3 |
| 9 | LCDHSYNC/NCS3 | LCD Horizontal Sync | PC27 |
| 10 | IRQ4 (Resistive touch) | Interrupt request line for resistive touch controllers | PF4 |
| 11 | LCDVSYNC/nWE | LEC Vertical Sync or Write enable (active-low) | PG4 |
| 12-19 | non-pop | - | - |
| 20 | 5.0V VCC | +5.0V | - |
| 21 | LCDPCK/nRD | LCD pixel Clock or Read Enable (active-low) | PC6 |
| 22 | I2C SDA | Data line for I2C interface. Always implemented, bus type. | PC0 |
| 23 | LCD D0 | LCD Data bit 0 | PD13 |
| 24 | I2C SCL | Clock line for I2C interface. Always implemented, bus type. | PC1 |
| 25 | LCD D1 | LCD Data bit 1 | PD23 |
| 26 | SPI SCK | Clock for serial peripheral interface. Always implemented, bus type. | PD25 |
| 27 | LCD D2 | LCD Data bit 2 | PD14 |
| 28 | SPI MOSI | Host Out Client In (MOSI) line of Serial Peripheral Interface. | PD24 |
| 29 | LCD D3 | LCD Data bit 3 | PD23 |
| 30 | SPI MISO | Host In Client Out (MISO) line of Serial Peripheral Interface. | PD27 |
| 31 | LCD D4 | LCD Data bit 4 | PD15 |
| 32 | SPI SS | SPI Client Select | PD26 |
| 33 | LCD D5 | LCD Data bit 5 | PD3 |
| 34 | UART RX | Receiver line of target device UART (Not Implemented on this design) | - |
| 35 | LCD D6 | LCD Data bit 6 | PD16 |
| 36 | UART TX | Transmitter line of target device UART. (Not Implemented on this design) | - |
| 37 | LCD D7 | LCD Data bit 7 | PD17 |
| 38 | UART RTS | UART Ready To Send (Not Implemented on this design) | - |
| 39 | LCD D8 | LCD Data bit 8 | PD4 |
| 40 | UART CTS | UART Clear To Send (Not Implemented on this design) | - |
| 41 | LCD D9 | LCD Data bit 9 | PD18 |
| 42 | LCD PWM | LCD PWM back light control | PG5 |
| 43 | LCD D10 | LCD Data bit 10 | PD19 |
| 44 | PWM2 | Pulse-Width Modulation (PWM) | PG6 |
| 45 | LCD D11 | LCD Data bit 11 | PD5 |
| 46 | GPIO1 | General purpose I/O | PE6 |
| 47 | LCD D12 | LCD Data bit 12 | PD6 |
| 48 | GPIO2 | General purpose I/O | PE7 |
| 49 | LCD D13 | LCD Data bit 13 | PD20 |
| 50 | GPIO3 | General purpose I/O | PE8 |
| 51 | LCD D14 | LCD Data bit 14 | PD21 |
| 52 | STBY/RST/GPIO4 | Standby/Reset or general purpose I/O. For resetting devices attached to the GFX connector. | PE5 |
| 53 | LCD D15 | LCD Data bit 15 | PD7 |
| 54 | STBY/RST/GPIO5 | Standby2/Reset2 or general purpose I/O (Not Implemented on this design) | - |
| 55 | LCD D16 | LCD Data bit 16 (Not Implemented on this design) | - |
| 56 | ID pin | Communication line to the ID chip on an extension board | ID4 |
| 57 | LCD D17 | LCD Data bit 17 (Not Implemented on this design) | - |
| 58 | ADC 0 | Analog-to-Digital Converter to MCU | PB3 |
| 59 | LCD D18 | LCD Data bit 18 (Not Implemented on this design) | - |
| 60 | ADC1 | Analog-to-Digital Converter to MCU | PB2 |
| 61 | LCD D19 | LCD Data bit 19 (Not Implemented on this design) | - |
| 62 | ADC2 | Analog-to-Digital Converter to MCU | PB1 |
| 63 | LCD D20 | LCD Data bit 20 (Not Implemented on this design) | - |
| 64 | ADC3 | Analog-to-Digital Converter to MCU | PB0 |
| 65 | LCD D21 | LCD Data bit 21 (Not Implemented on this design) | - |
| 66 | ADC4 | Analog-to-Digital Converter to MCU | PA20 |
| 67 | LCD D22 | LCD Data bit 22 (Not Implemented on this design) | - |
| 68 | ADC5 | Analog-to-Digital Converter to MCU | PA19 |
| 69 | LCD D23 | LCD Data bit 23 (Not Implemented on this design) | - |
| 70 | ADC6 | Analog-to-Digital Converter to MCU | PB18 |
| 71 | 3.3V VCC | +3.3V VCC | - |
| 72 | ADC7 | Analog-to-Digital Converter to MCU | PB19 |
| 73 | GND | Ground | - |
| 74 | 3.3V VCC | +3.3V VCC | - |
| 75 | GND | Ground | - |
| M1 | GND TAB | Mounting Tab | - |
| M2 | GND TAB | Mounting Tab | - |