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chipKIT™ DP32™ Board Reference Manual

5. JP1 – USBID Jumper for use with USB OTG:

This jumper allows Digital I/O pin 0 (RB5) to be disconnected from the USBID line on the USB Port. If JP1 is

shorted, pin 0 may not operate as expected. Some users may wish to keep JP1 shorted for USB

operations.

6. JP2 and JP3 – D+ and D- USB Signals:

These jumpers are shipped unloaded. The trace between the two terminals may be cut if USB

functionality is required to be permanently disabled. Once the traces have been cut, it is possible to solder

jumper pins in these locations to re-enable the D+ and D- signals as desired.

7. IC4 – SPI EEPROM Device (Microchip 25LC256) Loading Point:

This 8-pin DIP footprint is designed so that a SPI controlled EEPROM device could be added at a later time,

if desired. It is intended that an 8-pin DIP socket or a Microchip 25LC256 device would be soldered into

this location.

8. VR1 – Analog Potentiometer:

An analog potentiometer connected to chipKIT analog pin A2. Analog pin A2 is mapped to digital chipKIT

pin 8. When rotated fully counter clockwise, 0V is read on the pin. When rotated fully clockwise, 3.3V is

read on the pin.

9. User LEDs:

Four LEDs connected to digital signal pins 11, 12, 13, and 14. An additional power-on LED has been added

to the power supply circuit. When using a debugger signal pins 11 and 12 are dedicated to the debugger

circuit and therefore cannot be used as LEDs.

10. Reset Button:

When pressed, the microcontroller resets the currently loaded sketch. If Button 2 (BTN2/PGM) is held

down while pressing the reset button, the microcontroller will start from the boot loader, allowing a new

sketch to be loaded.

11. BTN2/PGM and BTN3 User Buttons:

These user buttons are connected to digital signal pins 1 and 17. They produce a logic high signal when

depressed, and a logic low signal when released.

12. JP4/JP5 – Pull-up/Pull-down jumpers:

These jumpers are used to add 2.2KΩ pull-up or pull down resistors to the digital signal pins 2 and 3. Pull-

ups are necessary when utilizing I

states either pulled high or pulled low, depending on the jumper settings. In addition, if no pull-ups or

pull-downs are desired, the jumper may be safely removed completely, allowing the pins to be used for

other input/output purposes.

13. IC1 PIC32 Microcontroller:

The PIC32MX250F128B microcontroller is the main processor for the board.

14. J4 – Digital and Analog I/O Connector #1:

The set of Digital I/Os with chipKIT numbers 0 through 8 and Analog pins A0-A2. See table 1 in appendix A

for more details.

15. IC3 – Analog Temperature Sensor (Microchip MCP9701A) Loading Point:

This 3-pin footprint is intended for an analog temperature sensor to be loaded by the user. It was

designed with the Microchip MCP9701A Linear Active Thermistor in mind. The pin one (square pin) is for

VCC3V3 of the device, pin two (center pin) is for the A0/pin 6 pin of the device, and pin three is for the

ground pin (chipKIT pin 6).

Other product and company names mentioned may be trademarks of their respective owners.

C on these two pins. These two jumpers can be used as settable logic

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