Renesas RH850/F1Kx Series - Table 2: RH850;F1 KM-S1 Overview of Power Supply Architecture Cases; Table 3: RH850;F1 KM-S1 Power Supply Architecture with Single Supply 5 V; Table 4: RH850;F1 KM-S1 Power Supply Architecture with Mixed Supply 5 V & 3.3 V

RH850/F1Kx, RH850/F1K Series Hardware Design Guide
R01AN3841ED0110 Rev. 1.10 Page 10 of 108
August 8, 2019
Table 2: RH850/F1KM-S1 Overview of power supply architecture cases
Case
Supply Voltage
Permission
REGVCC
EVCC
A0VREF
Case 1
5V
5V
5V
Operation permitted
Case 2
5V
5V
3.3V
Operation permitted
Case 3
5V
3.3V
*
Operation not permitted
Case 4
3.3V
5V
*
Operation not permitted
Case 5
3.3V
3.3V
5V
Operation permitted
Case 6
3.3V
3.3V
3.3V
Operation permitted
Note: * means “don’t care”.
Table 3: RH850/F1KM-S1 Power supply architecture with single supply 5V
Case 1 – Single Supply 5V
Condition
REGVCC = 5V
EVCC = 5V
A0VREF = 5V
Port Function
AP0 – Port usable with analog or digital function
P8 – Port usable with analog or digital function
P9 – Port usable with analog or digital function
Limitation
No limitation applies

Operation permitted
Table 4: RH850/F1KM-S1 Power supply architecture with mixed supply 5V & 3.3V
Case 2 – Mixed Supply 5V & 3.3V
Condition
REGVCC = 5V
EVCC = 5V
A0VREF = 3.3V
Port Function
AP0 – Port usable with analog or digital function
P8 – Port usable with analog or digital function, analog input
voltage limited to max. 3.3V. When analog input terminal is over 3.3V,
do not include the input into an AD scan group
P9 – Port usable with analog or digital function, analog input
voltage limited to max. 3.3V. When analog input terminal is over 3.3V,
do not include the input into an AD scan group
Limitation
Analog port function limitation applies to P8 and P9

Operation permitted