3.8 XPRO Header (J20)
The WBZ351 Curiosity Board includes one XPRO standard extension male header (XPRO header) (J20) to connect to the Microchip QT7/T9 Xplained Pro kit. The Microchip QT7 Xplained Pro kit is an extension board that enables the evaluation of self-capacitance touch using the Peripheral Touch Controller (PTC) module. For more details, refer to the QT7 Xplained Pro Extension Kit (ATQT7-XPRO).
The following table provides details about the pinout definition.
| XPRO Header (J20) Pin | Function QT7 | Function T9 | Description | Mapping on WBZ351 EVB |
|---|---|---|---|---|
| 1 | ID | ID | Communication line to ID chip | — |
| 2 | GND | GND | Ground | — |
| 3 | Y-Line-5 | Not connected | Y-line 5 – Connected to driven Shield | PB0/CVD4 |
| 4 | Y-Line-1 | Not connected | Y-line 1 – Connected to button 1 | PB3/CVD7 |
| 5 | LED 0 | LED 2 | Touch status LED for slider | PB10/INT/PWM/LED1 |
| 6 | LED 6 | LED 1 | Touch status LED for button 1 | PA4 /LED6 |
| 7 | Y-Line-2 | Y-Line-1 | Y-line – Connected to slider/button | PB5 / CVD1 |
| 8 | Y-Line-3 | Y-Line-2 | Y-line – Connected to slider/button | PB1/CVD5 |
| 9 | Y-Line-4 | Y-Line-4 | Y-line – Connected to slider/button | PB2/RST/CVD6 |
| 10 | Y-Line-0 | Y-Line-3 | Y-line – Connected to button 2 | PB4/CVD0 |
| 11 | LED 7 | Not connected | Touch status LED for button 2 | PA13/I2C_SERCOM_PAD0/SDA |
| 12 | LED 1 | Not connected | Touch status LED for slider | PA14/I2C_SERCOM_PAD1 |
| 13 | Not connected | Not connected | — | PA8/SERCOM1_PAD1 (UART_RX) |
| 14 | Not connected | Not connected | — | PA7/SERCOM1_PAD0 (UART_TX) |
| 15 | LED 2 | LED 3 | Touch status LED for slider | PA9/SERCOM1_PAD2 (SPI_SS) |
| 16 | LED 3 | LED 4 | Touch status LED for slider | PA7/SERCOM1_PAD0 (SPI MOSI) |
| 17 | LED 4 | Not connected | Touch status LED for slider | PA10/SERCOM1_PAD3 (SPI MISO) |
| 18 | LED 5 | Not connected | Touch status LED for slider | PA8/SERCOM1_PAD1 (SPI_SCK) |
| 19 | GND | GND | Ground | Ground |
| 20 | VCC | VCC | Target supply voltage | 3.3V |