
Pin assignments
UM0529
12/29
5 Pin
assignments
5.1 Jumpers
details
, and
show jumper assignments of the demonstration board. All the jumper
settings are same for both
the STUSB02E and STUSB03 evaluation boards except for
jumper J10 and J12.
Table 2.
General jumper assignments
Jumper
Related pin(s)
Description
Default
JP1
PB7
Open:
disconnects LED D1 from the microcontroller pin
connected to it.
Closed
JP2
PB6
Open:
disconnects LED D2 from the microcontroller pin
connected to it.
Closed
JP3
PA7
Open:
disconnects LED D3 from the microcontroller pin
connected to it.
Closed
JP4
PA6
Open:
disconnects LED D4 from the microcontroller pin
connected to it.
Closed
J8
OSCIN
Closed:
connects main clock input for external source.
Open
Table 3.
Voltage regulator U4 related jumper assignment
Jumper
Related pin(s)
Description
Default
J9
V
IN
Open:
disconnects the external voltage regulator supply
voltage
Closed:
connects the V
CC
to IN pin of voltage regulator
U4 when external regulator is to be used.
Open
J13
INH
Pin 1 and 2 closed:
connects the INHIBIT of U4 to V
CC
to switch on the external voltage regulator U4
Pin 2 and 3 closed:
connects the INHIBIT pin of U4 to
GND to switch off the external voltage regulator U4.
Pin 2 and
3 closed
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