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.

Table 2-8. Graphics Interface Pinout
Pin NumberNameDescriptionPort/Pin
1GNDGround-
2GNDGround-
3MCLRHost Clear, Controlled by the debuggers. Allows for a complete system reboot.TARGET_RESETn
4IRQ1 (LCD Touch)Interrupt request line for cap touch devicePF1
55.0V VCC5.0V-
6IRQ2 (Q Touch)Interrupt request line for Q touch devicesPF2
7LCDENLCD Data EnablePC5
8IRQ3 (Display Controllers)Interrupt request line for external display controllersPF3
9LCDHSYNC/NCS3LCD Horizontal SyncPC27
10IRQ4 (Resistive touch)Interrupt request line for resistive touch controllersPF4
11LCDVSYNC/nWELEC Vertical Sync or Write enable (active-low)PG4
12-19non-pop--
205.0V VCC+5.0V-
21LCDPCK/nRDLCD pixel Clock or Read Enable (active-low)PC6
22I2C SDAData line for I2C interface. Always implemented, bus type.PC0
23LCD D0LCD Data bit 0PD13
24I2C SCLClock line for I2C interface. Always implemented, bus type.PC1
25LCD D1LCD Data bit 1PD23
26SPI SCKClock for serial peripheral interface. Always implemented, bus type.PD25
27LCD D2LCD Data bit 2PD14
28SPI MOSIHost Out Client In (MOSI) line of Serial Peripheral Interface.PD24
29LCD D3LCD Data bit 3PD23
30SPI MISOHost In Client Out (MISO) line of Serial Peripheral Interface.PD27
31LCD D4LCD Data bit 4PD15
32SPI SSSPI Client SelectPD26
33LCD D5LCD Data bit 5PD3
34UART RXReceiver line of target device UART (Not Implemented on this design)-
35LCD D6LCD Data bit 6PD16
36UART TXTransmitter line of target device UART. (Not Implemented on this design)-
37LCD D7LCD Data bit 7PD17
38UART RTSUART Ready To Send (Not Implemented on this design)-
39LCD D8LCD Data bit 8PD4
40UART CTSUART Clear To Send (Not Implemented on this design)-
41LCD D9LCD Data bit 9PD18
42LCD PWMLCD PWM back light controlPG5
43LCD D10LCD Data bit 10PD19
44PWM2Pulse-Width Modulation (PWM)PG6
45LCD D11LCD Data bit 11PD5
46GPIO1General purpose I/OPE6
47LCD D12LCD Data bit 12PD6
48GPIO2General purpose I/OPE7
49LCD D13LCD Data bit 13PD20
50GPIO3General purpose I/OPE8
51LCD D14LCD Data bit 14PD21
52STBY/RST/GPIO4Standby/Reset or general purpose I/O. For resetting devices attached to the GFX connector.PE5
53LCD D15LCD Data bit 15PD7
54STBY/RST/GPIO5Standby2/Reset2 or general purpose I/O (Not Implemented on this design)-
55LCD D16LCD Data bit 16 (Not Implemented on this design)-
56ID pinCommunication line to the ID chip on an extension boardID4
57LCD D17LCD Data bit 17 (Not Implemented on this design)-
58ADC 0Analog-to-Digital Converter to MCUPB3
59LCD D18LCD Data bit 18 (Not Implemented on this design)-
60ADC1Analog-to-Digital Converter to MCUPB2
61LCD D19LCD Data bit 19 (Not Implemented on this design)-
62ADC2Analog-to-Digital Converter to MCUPB1
63LCD D20LCD Data bit 20 (Not Implemented on this design)-
64ADC3Analog-to-Digital Converter to MCUPB0
65LCD D21LCD Data bit 21 (Not Implemented on this design)-
66ADC4Analog-to-Digital Converter to MCUPA20
67LCD D22LCD Data bit 22 (Not Implemented on this design)-
68ADC5Analog-to-Digital Converter to MCUPA19
69LCD D23LCD Data bit 23 (Not Implemented on this design)-
70ADC6Analog-to-Digital Converter to MCUPB18
713.3V VCC+3.3V VCC-
72ADC7Analog-to-Digital Converter to MCUPB19
73GNDGround-
743.3V VCC+3.3V VCC-
75GNDGround-
M1GND TABMounting Tab-
M2GND TABMounting Tab-