Parallax P2 Edge Mini Breakout Board : User Guide : Page 5

3. Prop Plug Programming Header

The P2 Edge Module is programmed by the Parallax Prop Plug programming tool (#32201). To

accommodate the Prop Plug, there is a dedicated 4-pin programming and debugging header.

The pins are marked ▽ △ RES VSS, and correspond to the pin labelling on the Prop Plug

adapter.

Connect the Prop Plug to your computer with a suitable USB cable. Then, insert the Prop Plug

onto the header pins with the Prop Plug components facing upward. The upward orientation

allows you to see the RX and TX activity LEDs on the Prop Plug while programming or debugging

data is being transmitted.

4. Reset Button

Use this button to restart the Propeller 2 microcontroller’s program running on the P2 Edge

Module. Press and hold to keep the microcontroller in reset. Press and release to reset, load

and run the program in EEPROM.

5. Protoboard Matrix

The protoboard areas are unconnected 4 x 5 hole matrices arranged in 2 areas, for a total of 40

holes. The hole spacing is 0.1”. Use these to add components and access additional Smart I/O

pins directly from the Edge connector. Refer to the Edge Socket Pinout for details.

6. I/O Pin Accessory Headers (with 5V output)

With the P2 Edge Module plugged in, Each of the Propeller

2's 64 smart I/O pins connect to an accessory header, in

specific groups of eight.

Each edge header provides two GND connections, a Vxx

output pin supplying the voltage from the corresponding 3.3

V LDO voltage regulator (described here), and optionally a 5

V output, that is connected directly to the Power Jack.

DO NOT APPLY VOLTAGE TO THE Vxx Pin; it is a voltage output! Be aware that some

I/O pins are also connected to other peripheral circuits; see the Edge Connector Pin

Assignments section.