Analog Power Supply Voltage (Jp: 24, 27, 28, 35, 36) - Fujitsu MB91470 SERIES User Manual

4.2 Analog Power Supply Voltage (JP: 24, 27, 28, 35, 36)

The power supply as well as the positive reference voltages for the A/D-converters can be
provided internally or externally.
JP24, JP35 connects analog power supply voltages (AVcc and AVss)
JP27 connects the analog reference voltage AVRH2 to AVcc
JP28 connects the analog reference voltage AVRH3 to AVcc
JP36 connects the analog reference voltage AVRH4 to AVcc
Jumper
JP24 (AVcc)
JP27 (AVRH2)
JP28 (AVRH3)
JP36 (AVRH4)
JP35 (AVss)
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By default the resistor networks are not mounted on the board
By default, the A/D-converter supply and reference voltages are the same as the
microcontroller supply voltage.
Note:
If JP24 and JP35 are open, the user has to supply an adequate analog voltage supply (AVcc
and AVss) to the A/D-converter.
If JP27 is open, the resistors R27 and R37 define AVRH2.
If JP28 is open, the resistors R26 and R36 define AVRH3.
If JP36 is open, the resistors R43 and R47 define AVRH4.
By default the resistor networks are not mounted on the board. Standard SMD0805 chip resistors can
be used.
FMEMCU-UG-910067-10
SK-91470-144PMC1-MC User Guide
Chapter 4 Jumpers and Switches
Setting Description
Closed AVcc is connected to Vcc
Open AVcc is disconnected from Vcc
Closed AVRH2 is connected to AVcc
Open AVRH2 defined by resistor network
Closed AVRH3 is connected to AVcc
Open AVRH3 defined by resistor network
Closed AVRH4 is connected to AVcc
Open AVRH4 defined by resistor network
Closed AVss is connected to GND
Open AVss is disconnected from GND
- 12 - © Fujitsu Microelectronics Europe GmbH
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