OLIMEX STM32-E407, Руководство пользователя

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OLIMEX© 2018 STM32-E407 user's manual
6.10 Battery connector
When using the battery connector keep in mind that it is an energy solution that wouldn't be able to
power the board and all the peripherals!
It help keeping information in the processor if you need to transport the board from one power
supply to other.
Pin # Signal name
1 VBAT
2 GND
The pin names are also written on the bottom of the board in the base of the connector.
6.11 BOOT pads
The best use for the GND, RX3, TX3 pins from the BOOT connector would be getting the output
of the available demo program on a computer terminal via USB-SERIAL-CABLE-M
(
https://www.olimex.com/Products/Components/Cables/USB-Serial-Cable/USB-Serial-Cable-M/ )
BOOT are 3 pinholes set on USART3 and are named on the bottom – GND, RX3, TX3 and notice
there are two vias near them which are actually VCC and can be used if connecting BOOT. More
information about booting over UART can be found in the processor's datasheet.
6.12 Jumper description
Please note some of the jumpers on the board are SMD type. If you feel insecure in your
soldering/cutting technique it is better not to try adjusting SMD jumpers.
Also if you feel incapable of removing the PTH jumper with hand better use tweezers. We do.
6.12.1 PWR_SEL
PWR_SEL is important PTH jumper allowing easy switching of input current. You can use tweezers
to reach it. If you are powering the board via the PWR_JACK set it to position 1-2 (default → to the
near edge of the board).
If powering from the JTAG/SWD set the jumper in position 3-4.
If powering from the USB-OTG2 set it in 5-6 position (near battery connector).
If powering from the USB-OTG1 set it in 7-8 position (near LAN connector).
The default position is 1-2.
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