4.
Hardware User Guide
4.1
Power Sources
The PIC32CM JH01 Curiosity Pro evaluation kit can be powered by the following power sources:
• Embedded Debugger USB
• An external power
Table 4-1. Power Sources
Power input
Voltage requirements
Current requirements
Connector
marking
External power
4.3V to 5.5V.
Recommended maximum is 2A due to
the input protection maximum current
specification.
PWR
Embedded
debugger USB
4.4V to 5.25V (according to
USB spec.)
500 mA (according to USB spec.)
DEBUG USB
The evaluation kit will automatically detect which power source is available, and choose which one to use according
to the following priority:
• External power
• Embedded Debugger USB
Note:
External power is required when 500 mA from a USB connector is not enough to power the evaluation kit with
possible extension boards.
The EDBG controls an on-board power switch to the PIC32CM JH01, on-board peripherals, and extension
connectors. When the kit is powered up, the EDBG reads the ID chip information from all connected extension
boards and checks they are compatible with the voltage selected by the power selection jumper. If the selected
voltage is within the connected extensions ranges, the switch will open. If not, the EDBG power LED will blink rapidly
and the switch will stay closed resulting in no power provided to the PIC32CM JH01, on-board peripherals, and
connectors.
CAUTION
The evaluation kit can be powered by 5.0V. Care must be taken not to connect any extension board that
does not support this voltage, as it might results in permanent damage. Check the respective extension
kit's user guide to see which voltages are acceptable.
Remember:
The EDBG only reads the ID information and controls the power switch when the kit is
powered up. This mechanism does not check hot plugging of extension boards.
EV81X90A
Hardware User Guide
©
2022 Microchip Technology Inc.
and its subsidiaries
User Guide
DS70005482B-page 9
