4.2 Curiosity Nano Standard Pinout
The 12 edge connections closest to the USB connector on Curiosity Nano boards have a standardized pinout. The program/debug pins have different functions depending on the target programming interface, as shown in the table and figure below.
Debugger Signal | Target MCU | Description |
---|---|---|
ID | — | ID line for extensions |
CDC TX | UART RX | USB CDC TX line |
CDC RX | UART TX | USB CDC RX line |
DBG0 | ICSPDAT | Debug data line |
DBG1 | ICSPCLK |
Debug clock line |
DBG2 | GPIO0 | debug GPIO0 |
DBG3 | MCLR | Reset line |
NC | — | No connect |
VBUS | — | VBUS voltage for external use |
VOFF | — | Voltage Off input. Disables the target regulator and target voltage when pulled low. |
VTG | — | Target voltage |
GND | — | Common ground |