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3.4 Analog Power Supply Voltage (JP: 11, 12, 13, 14)
The power supply as well as the positive reference voltage for the A/D-converter can be
provided internally or externally.
JP11, JP14 connects analog power supply voltages (AVcc and AVss)
JP12
connects the low pass filtered analog reference voltage AVRH to AVcc
JP13
connects the low pass filtered analog reference voltage AVRL to AVss
Jumper
JP11
(AVcc)
JP12
(AVRH)
JP13
(AVRL)
JP14
(AVss)
*1
By default the resistor network (R16, R17, R20, R21) is not mounted on the board
Default: JP11, JP12, JP13, and JP14 are closed
By default, the A/D-converter supply and reference voltage is the same as the
microcontroller supply voltage.
Note:
If JP11 and JP14 are open, the user has to supply an adequate analog voltage supply (AVcc
and AVss) to the A/D-converter.
If JP12 and JP13 are open, the resistors R16, R17, R20, and R21 define AVRH and AVRL.
By default the resistor network (R16, R17, R20, and R21) is not mounted on the board.
3.5 Alarm Comparator (JP: 78)
Potentiometer RP2 is connected to ALARM0 in order to evaluate comparator 0 of the
microcontroller. Any voltage between VCC and GND can be set. Additionally the adjusted
voltage can be measured at connector J2.
JP78 One potentiometer can be connected to the ALARM0/AN8
Jumper
Setting
JP78
(ALARM0)
© Fujitsu Microelectronics Europe GmbH
SK-96380-120PMC User Guide
Chapter 3 Jumpers and Switches
Setting
Closed
Open
Closed
Open
Closed
Open
Closed
Open
Table 3-3: ADC Supply
Description
Closed
Pin 26 (ALRAM0/AN8) of the MCU is connected to RP2
Open
Pin 26 (ALRAM0/AN8) of the MCU is not connected
Table 3-4: Alarm Comparator
Description
AVcc is connected to Vcc
AVcc is disconnected from Vcc
AVRH is connected to AVcc
AVRH defined by resistor network
AVRL is connected to AVss
AVRL defined by resistor network
AVss is connected to GND
AVss is disconnected from GND
- 17 -
*1
*1
UG-960019-11
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