3.3 Power Sources
The PIC32CM SG00/GC00 Curiosity Pro kit can be powered by several power sources as listed in the following table:
| Number | Power Source | Voltage Requirements | Current Requirements | Connector Marking |
|---|---|---|---|---|
| 1 | Embedded Debugger USB | From 4.75V to 5.25V DC (According to USB spec.) | 500 mA (According to USB spec.) | DEBUG USB |
| 2 | Target USB | From 4.75V to 5.25V DC (According to USB spec.) | 500 mA (According to USB spec.) | TARGET USB |
| 3 | External Power Header | 5V DC ±2% (±100 mV) for USB Host operation. From 4.3V to 5.5V DC if a USB Host operation is not required. | In those cases requiring current supply higher than 500 mA, this connector can be used to deliver up to 2A maximum. | POWER |
The following figure illustrates a high-level block diagram of the power system on the PIC32CM SG01/GC01 Curiosity Pro development board.
Once the board is powered, the green LED D600 (PWR) is on.
Any of the three power sources provide 5V DC to supply two Low Dropout (LDO) regulators (MIC5528-3.3MYT) of 500 mA each one. They supply the PKOB4 debugger, the 3.3V system, and the MCU target. For additional information about this LDO, refer to the “MIC5528 Data Sheet” (DS20005982) available at product webpage.
Refer to the Extension Power Header for additional information about the Extension Power Header (J201).
The PIC32CM SG00/GC00 Curiosity Pro development board has a 1x2, 100 mil pitch pin header (J202) marked with MCU Current Measurement that is located at the upper edge of the board. All power to the target device is routed through this header and the header is populated with a jumper. The purpose of this header is to enable power consumption measurements of the target device with external equipment.