User manual

OLIMEX© 2013 STM32-E407 user's manual
If B0_1 is closed there are two variants depending on the state of B1_1/B1_0 jumper – if B0_1 is
closed and B1_0 is closed the board will try to boot from System Memory. If B0_1 is closed and
B1_1 is closed bootloader must be located in the Embedded SRAM.
The default positions are B0_0 and B1_0 (Boot from User Flash Memory).
6.12.3 R-T
This is SMD type jumper.
If you close/solder this jumper RST and TRST at the JTAG will be connected.
The default position is open/unsoldered.
6.12.4 3.3V_E
This is SMD type jumper.
Board digital power will be disabled if open/unsoldered
The default position is closed.
6.12.5 AGND_E
This is SMD type jumper.
If open/unsoldered will disable analog ground.
The default position is closed.
6.12.6 AREF_EN
This is SMD type jumper.
If open/unsoldered will disable ADC reference.
The default position is closed.
6.12.7 GPIO port jumpers
These are SMD type of jumpers located on the bottom of the board. They are located on the bottom
of the board. We provided those in case you want to separate the multiplexing between the Arduino
shield and the GPIO connectors. Check chapter 6.8 for more information on the multiplexing.
Generally if you wish to avoid the multiplexing you have to cut the wire between the pads.
6.13 Additional hardware components
The components below are mounted on STM32-E407 but are not discussed above. They are listed
here for completeness:
Reset button - used for hardware reset of the board
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