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chipKIT Uno32 Reference Manual

2. JP3 – Microchip Debug Tool Connector

This connector is used to connect Microchip programmer/debugger tools, such as the

PICkit™3. This allows the Uno32 board to be used as a traditional microcontroller

development board using the Microchip MPLAB

3. J4 – External Power Connector

This is a 5.5mm x 2.1mm barrel connector used to power the Uno32 board from an

external power supply. It is wired with the center terminal as the positive supply voltage.

The power supply voltage must be in the range 7V to 15V.

4. Power Supply – 3.3V Regulator

Voltage regulator for the 3.3V power supply. This power supply can provide up to 500mA

of current.

5. JP2 – Power Select Jumper

This jumper is used to route power from the external power connector through the on-

board 5V voltage regulator or to bypass the 5V regulator. The REG position routes power

through the 5V regulator. The BYP position bypasses the on-board 5V regulator. With this

jumper in the BYP position the maximum input voltage that can be applied at the external

power connector is 6V.

6. Power Supply – 5V Regulator

This on-board 5V voltage regulator regulates the input voltage applied at the external

power connector to 5V. This is used to power the 3.3V regulator and to provide 5V power

to expansion shields. This regulator can provide up to 800mA of current.

7. J2 – Shield Power Connector

This connector provides power to I/O expansion shields connected to the board.

8. PIC32 Microcontroller

The PIC32MX320F128H microcontroller is the main processor for the board.

9. J7 – Analog Signal Connector

This connector provides access to analog/digital I/O pins on the microcontroller.

10. JP6/JP7 – A4/A5 Signal Select Jumpers

These jumpers are used to switch pins 9 and 11 on connector J7 between analog inputs

A4 and A5 or the I

11. J8 – SPI Signal Connector

This connector provides alternative access to the SPI signals. This is used by some

shields for access to the SPI bus.

12. JP5/JP7 – SPI Master/Slave Select Jumpers

These jumpers are used to switch the SPI signals for use of the Uno32 board as an SPI

master device or as an SPI slave device. Both jumpers should be switched together. Place

the shorting blocks in the MASTER position for master operation and in the SLAVE

position for slave operation. Normally, these jumpers are in the MASTER position.

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C signals SDA and SCL.

IDE.

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