Voltage Distribution - Renesas RH850/E2 Series User Manual

3.2
R20UT4084ED0130 Rev. 1.3
2020-05-12

Voltage distribution

The table shows the required device power supply pins. For detailed explanation
of their function and specification, please refer to the user documentation of the
corresponding device:
Table 1 Available Power Domains for MCU
Device Supply Pin
SYSVCC
VCC
EnVCC (n = 0-2)
LVDVCC
EMUVCC
AnVCC (n = 0 and 2)
AnVREFH (n = 0 and 2)
ADSVCC
ADSVREFH
EMUVDD
VDD
Additional power supply for the MainBoard and the operation of the PiggyBack
board can be selected:
Table 2 Available Power Domains for Board Operation
Supply voltage
VDDIOF
Board_VCC
The following figure shows the configurable voltage distribution on the PiggyBack
board.

All power supply lines can be interrupted by jumpers. This provides the
possibility to measure the current consumption of each individual power
domain of the device (JP4 – 16 and JP23 – 24).

The IO supply voltage for the Mainboard (VDDIOF) can be connected via
jumper JP17 to 5V or 3.3V, if the PiggyBack board is mounted on a
MainBoard.
VDD and EMUVDD can be powered either directly from the 'banana-type'

connector (CN24) or by an on-board voltage regulator.

The source for the on-board voltage regulator, as well as the source for all
on-board devices (Board_VCC) needs to be configured via jumper JP30 to
either 5V or 3.3V.

The source for VDD is selectable by the jumper JP22. The jumper JP23 and
JP24 connect the voltage, configured by JP22 with the VDD and EMUVDD
pins.
IO supply voltage for components located on a
connected mainboard.
Source for all devices (e.g. voltage regulator) on the
PiggyBack board
Function
7