Notes On Using This Product - Renesas R0E521000CPE00 User Manual

R0E521000CPE00 User's Manual

4.5 Notes on Using This Product

Notes on using this product are listed below. When debugging the MCU using this product, be careful about the following
precautions.
Note on Downloading Firmware:
Do not shut off the power while downloading the firmware. If this happens, the product will not start up
properly. If power is shut off unexpectedly, redownload the firmware.
Notes on the Self-check:
If the self-check does not result normally (excluding target status errors), the emulator may be damaged. Then
contact your local distributor.
Run the self-check with the user system not connected.
Note on Quitting the Emulator Debugger:
To restart the emulator debugger after it ends, always shut power to the emulator module off once and then on
again.
Notes on the User System (Power Supply, Order of Powering On):
The emulator's pin VCC is connected to the user system in order to monitor user system voltage. For this
reason, the emulator cannot supply power to the user system. Therefore, provide the user system with a separate
power supply from that of the emulator.
Settings of the POWER selection jumper need to be changed according to the power supply voltage and power
supply condition of the user system.
(1) The voltage of the user system should be 2.7V≤VCC≤5.5V when the POWER selection jumper is set to
the INT POWER side. Turn ON/OFF the user system and the emulator as simultaneously as possible.
(2) The voltage of the user system is less than 2.7 V, set the POWER selection jumper to the EXT POWER
side. For details about the POWER selection jumper, refer to "2.3.3 Setting the POWER Selection Jumper"
(page 24).
Before powering on your emulator system, check that the host machine, the emulator, the converter board and
user system are all connected correctly.
When the emulator debugger starts up, check the target status LEDs on the emulator to see if this product is
ready to operate.
REJ10J0845-0600 Rev.6.00 Aug. 20, 2009
Page 80 of 92
IMPORTANT
4. Hardware Specifications