Stand-Alone Operation With Single External Power Supply - Renesas RH850/E2x 292pin User Manual

RH850/E2x 292pin
7.3

Stand-Alone Operation with Single External Power Supply

This example enables to operate the board with only the 5.0 V external power supply.
Note
If the piggyback board is powered with 3.3V only the analog part of the RH850/E2x does not have a
power supply. Thus, operation cannot be guaranteed.
Usage of power supply connections:
•
CN15: 5.0 V
•
CN22: GND connection
•
CN23: not connected, no 3.3 V supply
•
CN24: not connected, no IN_1v12 supply
−
JP22[2-1]: use reg_vcc_VDD from on-board voltage regulator for supply of VDD voltage
Refer to 3.3 Device Core Voltage (VDD) for further details about VDD voltage.
Figure 7.1 Stand-alone operation with single external power supply
R20UT4669ED0100 Rev.1.00
June 03, 2020
7. Jumper Configuration Examples
Page 49 of 63