Fujitsu ADA-91270-90340-100PFV Benutzerhandbuch - Seite 11
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4.2
Analogue Power Supply Voltage (JP: 60, 61, 62, 63)
The power supply as well as the positive reference voltage for the A/D-converter can be
provided internally or externally.
JP60, JP61 connect power supply voltages (AVcc and AVss)
JP62, JP63 connect reference voltages (AVRH to AVcc, ARRL to AVss)
Jumper
JP60 (AVss)
JP61 (AVcc)
JP62 (AVRL)
JP63 (AVRH)
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By default the resistor network (R11, R23 and R26, R27) is not mounted on the board
Default: JP60, JP61, JP62 and JP63 are closed
By default, the A/D-converter supply and reference voltage is same as the microcontroller
supply voltage.
Note:
If JP60 and J61 are open, the user has to supply an adequate analogue voltage supply
(AVcc and AVss) to the A/D-converter.
If JP63 is open, the resistors R11 and R23 define AVRH.
If JP62 is open, the resistors R26 and R27 define AVRL.
By default the resistor network (R11, R23 and R26, R27) is not mounted on the board.
© Fujitsu Microelectronics Europe GmbH
ADA-91270-90340-100PFV v1.0
Chapter 4 Jumpers and Switches
Setting
Description
ON (closed)
AVss is connected to GND
OFF (open)
AVss is disconnected from GND
ON (closed)
AVcc is connected to Vcc
OFF (open)
AVcc is disconnected from Vcc
ON (closed)
AVRL is connected to AVss
OFF (open)
AVRL defined by resistor network
ON (closed)
AVRH is connected to AVcc
OFF (open)
AVRH defined by resistor network
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