MotorKit-91F267-MC User Guide
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© Fujitsu Microelectronics Europe GmbH
3.3 Analog Power Supply Voltage
(JP: 15, 16, 21, 22)
The power supply as well as the positive reference voltages for the A/D-converter can be
provided internally or externally.
JP15, JP22
connect power supply voltages (AVcc and AVss)
JP16, JP21
connect reference voltages (AVRH1, AVRH2 to AVcc)
Jumper
Setting
Description
Closed
AVcc is connected to Vcc
JP15 (AVcc)
Open
AVcc is disconnected from Vcc
Closed
AVRH2 is connected to AVcc
JP16 (AVRH2)
Open
AVRH defined by resistor network
*1
Closed
AVRH1 is connected to AVcc
JP21 (AVRH1)
Open
AVRH defined by resistor network
*1
Closed
AVss is connected to GND
JP22 (AVss)
Open
AVss is disconnected from GND
*1
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 JP15, JP16 and J11 are open, the user has to supply an adequate analogue voltage
supply (AVcc and AVss) to the A/D-converter.
If JP16 is open, the resistors R22 and R27 define AVRH2.
If JP21 is open, the resistors R21 and R26 define AVRH1.
By default the resistor networks are not mounted on the board.
