Renesas R8C/25 - Manual (Page 7)

Chapter 3. Power Supply
3.1. Requirements
This RSK operates from a 3V to 5V power supply.
A diode provides reverse polarity protection only if a current limiting power supply is used.
All RSK boards are supplied with an E8a debugger module. This product is able to power the RSK board with up to 300mA. When the RSK
is connected to another system then that system should supply power to the RSK.
All RSK boards have an optional centre positive supply connector using a 2.1mm barrel power jack.
Warning
The RSK is neither under nor over voltage protected. Use a centre positive supply for this board.
3.2. Power – Up Behaviour
When the RSK is purchased the RSK board has the ‘Release’ or stand alone code from the example tutorial code pre-programmed into the
Renesas microcontroller. On powering up the board the user LEDs will start to flash. After 200 flashes, or after pressing a switch the LEDs
will flash at a rate controlled by the potentiometer.
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