RH850/U2A 292pin 3. Power Supply
R20UT4545ED0102 Rev.1.02 Page 18 of 58
May 27, 2021
3.2 Voltage Distribution
The following table shows the required device power supply pins and their function:
Table 3.1 Device power supply pins (cont'd)
Power supply for I/O ports
Power supply for LVDS ports
Power supply for
• System Logic and internal voltage regulator power
• I/O ports
Power supply for on-chip flash memory
Power supply for on-chip Switching Voltage Regulator (SVR)
I/O voltage supply for the Main Board
Power supply for Ethernet domain (for U2A16 only)
A/D Converter's power supplies and reference voltages
A0VREFH, A1VREFH,
A2VREFH,
Note: * Refer to 3.3 Device Core Voltage (VDD) Selection for further details about VDD voltage.
Each of the above voltages can be selected from
• 5.0 V, 3.3 V (where applicable, see table above)
by a set of jumpers. For details refer to the figure below and Table 2.1 Jumpers overview (cont'd).