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4 Jumpers and Switches
This chapter describes the jumpers and switches which can be modified on the starter-kit.
The default settings are shown as a grey shaded area in the tables.
4.1 Power Supply (JP2, JP3, SW2, JP32)
The two onboard voltage regulators provide stabilized 5V and 3.3V.
Connects the MCU's VCC5 supply to 5V; can be used for MCU current
JP2
measurement.
JP32 Connects the MCU's VCC3V3 supply to 3.3V; can be used for MCU 3.3V domain
current measurement.
JP3
Board can be powered via a voltage regulator powered by external 9V supply.
SW2
With the switch SW2 the external power of the board can be switched on/off.
Jumper
JP2
(MCUVCC)
JP3
EXT/USB
SW2
(Power ON/OFF)
4.2 Program / Run switch (SW1)
With switch SW1, the Run or modes Program can be selected. The following settings are
necessary as per MCU hardware manual to switch between Run and Program.
Operation mode
Run (User mode)
Program (Serial writer mode)
In order to implement the above mode changes, MD0 and P127 are connected to the two
switches inside SW1 as given below.
Switch
Setting
SW1-1
© Fujitsu Semiconductor Europe GmbH
Chapter 4 Jumpers and Switches
Setting
Description
Closed
VCC5V connected to 5V
Open
For current measurement
1-2
USB connected
2-3
5V power supply via Voltage regulator (External 9V
supply)
OFF
External power supply is disconnected
ON
External power supply is connected
Table 2. Power Supply.
MD2
0
0
Table 3. Program Mode Requirements.
Description
OFF
P127 NOT pulled up
MD1
MD0
0
0
0
1
- 13 -
P127
-
1
UG-910097-11
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