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14
R01DS0148EJ0102
Data Sheet
Chapter 3 Power supply specification
Chapter 3 Power supply specification
3.1 Requirements for external power supply
connections
The user has to ensure a low resistive connection of all VSS pins on the PCB.
This specification denotes ground supply pins as:
VSS = OSCVSS = REGnVSS = EnVSS = A0VSS = 0V
in the further text.
With
EnVSS = E1VSS
REGnVSS = REG0VSS = REG1VSS = REG2VSS
The user has to ensure a low resistive connection of all VDD pins to the related
power supply. This specification denotes power supply pins as:
EnVDD, I/OVDD, REGnVDD, OSCVDD, A0VREFP.
in the further text.
With
EnVDD = E0VDD = E1VDD
REGnVDD = REG0VDD = REG1VDD = REG2VDD.
I/OVDD = A0VREFP, EnVDD, I0VDD, OSCVDD
3.2 Power area definitions
The device consists of the following power areas:
AWO (Always On area)
ISO0 (Isolated area 0)
The table below lists the related core and port voltage supply of each power
area:
Table 3-1 Power areas supply voltages
Power
Area
Supply voltage Related pins
AWO
Internal regulator supply REG0VDD, REG0VSS
Port Supply E0VDD
Other
OSCVDD, OSCVSS
I0VDD
ISO0
Internal regulator supply
REG1VDD, REG1VSS
REG2VDD, REG2VSS
Port Supply E1VDD, E1VSS
Other A0VREFP, A0VSS
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