RH850/U2A 144pin
3. Power Supply
R20UT5089ED0101 Rev.1.01
Page 11 of 56
July 08, 2022
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)
Device power supply pin
Voltage
Function
E0VCC, E1VCC, E2VCC
3.3 V, 5 V
Power supply for I/O ports
SYSVCC
3.3 V, 5 V
Power supply for System Logic and internal voltage regulator
power I/O ports
VCC
3.3 V, 5 V
Power supply for on-chip flash memory
SVRDRVCC
3.3 V, 5 V
Power supply for on-chip Switching Voltage Regulator (SVR)
SVRAVCC
3.3 V, 5 V
VDDIOF
3.3 V, 5 V
I/O voltage supply for the Main Board
A0VREFH, A1VREFH,
A2VREFH,
3.3 V, 5 V
A/D Converter's reference voltages
VDD
1.12 V *
Core supply voltage
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
Figure 3.1 Voltage distribution
Figure 3.1 Voltage distribution
VOLTAGE DISTRIBUTION
3.3V
1u
1u
1u
1u
1u
1u
P3V3
5.0V
P5V0
3.3V
3V3
5.0V
5V0
A2VREFH
3.3V or 5V
3.3V or 5V
3.3V or 5V
A1VREFH
P5V0
A5V0
P3V3
3.3V
5.0V
3.3V
A3V3
5.0V
A0VREFH
3.3V or 5V
SVRAVCC
3.3V or 5V
VDDIOF
3.3V or 5V
SVRDRVCC
3.3V or 5V
VCC
3.3V or 5V
SYSVCC
3.3V or 5V
E2VCC
3.3V or 5V
E1VCC
3.3V or 5V
E0VCC
JP1
C109
C107
C105
JP37
JP35
JP33
JP31
JP30
JP13
JP12
JP11
JP10
JP8
JP7
JP6
JP5
JP4
C94
C95
C96
3
2
1
3
2
1
3
2
1
3
2
1
2
1
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
2
1
2
1
3
2
1
3
2
1
3
2
1
3
2
1
2
1
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
2
1
2
1
