3.3.4.1.2 SAM/PIC32C JTAG Pinout (Cortex®-M debug connector)
SAM/PIC32C JTAG pin names and descriptions are shown in the table below. Pin numbers are shown for MPLAB PICkit Basic direct connection and Debugger Adapter Board 10-pin and 20-pin connections.
| MPLAB PICkit Basic Pin | Adapter Board (10-Pin) Pin | Adapter Board (20-Pin) Pin | Name | Description |
|---|---|---|---|---|
| 8 | 2 | 7 | TMS | Test Mode Select (control signal from the MPLAB PICkit Basic into the target device). |
| 6 | 7 | 2,3,9,11,17,19 | NC/AUX | Recommended as not connected. |
| 5 | 4 | 9 | TCK | Test Clock (clock signal from the MPLAB PICkit Basic into the target device). |
| 4 | 8 | 5 | TDO | Test Data Out (data transmitted from the target device into the MPLAB PICkit Basic). |
| 3 | 3, 5, 9 | 4,6,8,10,12,14,16,18,20 | GND | Ground. All must be connected to ensure that the MPLAB PICkit Basic and the target device share the same ground reference. |
| 2 | 1 | 1 | VDD\VTG* | VDD: MPLAB PICkit Basic providing power
to target (optional) or target providing power to MPLAB PICkit Basic (PTG) VTG: Voltage target reference. The MPLAB PICkit Basic samples the target voltage on this pin in order to power the level converters correctly. The MPLAB PICkit Basic draws less than 3mA from this pin in this mode. |
| 1 | 10 | 15 | MCLR | Reset (optional). Used to reset the target device. Connecting this pin is recommended since it allows the MPLAB PICkit Basic to hold the target device in a reset state, which can be essential to debugging in certain scenarios. |
| 7 | 6 | 13 | TDI | Test Data In (data transmitted from the MPLAB PICkit Basic into the target device). |
| * Remember to include a decoupling capacitor between this pin and GND. See AN4451: SAMA5D2 Hardware Design Considerations. | ||||