OLIMEX STM32-E407 User manual

STM32-E407 development board
USER’S MANUAL
Revision K, September 2018
Designed by OLIMEX Ltd, 2012
All boards produced by Olimex LTD are ROHS compliant

OLIMEX© 018 STM3 -E407 user's manual
DIS LAIMER
© 018 Olimex Ltd. Olimex®, logo and combinations thereof, are registered trademarks of Olimex Ltd. Other product
names may be trademarks of others and the rights belong to their respective owners.
T e information in t is document is provided in connection wit Olimex products. No license, express or
implied or ot erwise, to any intellectual property rig t is granted by t is document or in connection wit t e
sale of Olimex products.
This work is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License. To view a copy of
this license, visit http://www.creativecommons.org/licenses/by-sa/3.0/.
This hardware design by Olimex LTD is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported
License.
The software is released under GPL.
It is possible that the pictures in this manual differ from the latest revision of the board.
The product described in this document is subject to continuous development and improvements. All particulars of the
product and its use contained in this document are given by OLIMEX in good faith. However all warranties implied or
expressed including but not limited to implied warranties of merchantability or fitness for purpose are excluded. This
document is intended only to assist the reader in the use of the product. OLIMEX Ltd. shall not be liable for any loss
or damage arising from the use of any information in this document or any error or omission in such information or
any incorrect use of the product.
This evaluation board/kit is intended for use for engineering development, demonstration, or evaluation purposes only
and is not considered by OLIMEX to be a finished end-product fit for general consumer use. Persons handling the
product must have electronics training and observe good engineering practice standards. As such, the goods being
provided are not intended to be complete in terms of required design-, marketing-, and/or manufacturing-related
protective considerations, including product safety and environmental measures typically found in end products that
incorporate such semiconductor components or circuit boards.
Olimex currently deals with a variety of customers for products, and therefore our arrangement with the user is not
exclusive. Olimex assumes no liability for applications assistance, customer product design, software performance, or
infringement of patents or services described herein.
THERE IS NO WARRANTY FOR THE DESIGN MATERIALS AND THE COMPONENTS
USED TO CREATE STM32-E407. THEY ARE CONSIDERED SUITABLE ONLY FOR
STM32-E407.
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OLIMEX© 018 STM3 -E407 user's manual
Table of Contents
DIS LAIMER ............................................................................................................. 2
HAPTER 1 OVERVIEW ......................................................................................... 5
1. Introduction to t e c apter ....................................................................................................... 5
1.1 Features ..................................................................................................................................... 5
1.2 H407 or E407? .......................................................................................................................... 5
1.3 Target market and purpose of t e board ............................................................................... 6
1.4 Organization ............................................................................................................................. 6
HAPTER 2 SETTING UP THE STM32-E407 BOARD ....................................... 7
2. Introduction to t e c apter ....................................................................................................... 7
2.1 Electrostatic warning ............................................................................................................... 7
2.2 Requirements ........................................................................................................................... 7
2.3 Powering t e board .................................................................................................................. 8
2.4 Prebuilt software ...................................................................................................................... 8
HAPTER 3 STM32-E407 BOARD DES RIPTION ............................................. 9
3. Introduction to t e c apter ....................................................................................................... 9
3.1 Layout (top view) ..................................................................................................................... 9
3.2 Layout (bottom view) ............................................................................................................. 10
HAPTER 4 THE STM32F407ZGT6 MI RO ONTROLLER ......................... 11
4. Introduction to t e c apter ..................................................................................................... 11
4.1 T e STM32F407ZGT6 features ............................................................................................ 11
HAPTER 5 ONTROL IR UITY AND HARDWARE MODULES ............. 13
5. Introduction to t e c apter ..................................................................................................... 13
5.1 Reset ........................................................................................................................................ 13
5.2 Clocks ...................................................................................................................................... 13
5.3 Power supply circuit .............................................................................................................. 13
HAPTER 6 ONNE TORS AND PINOUT ....................................................... 14
6. Introduction to t e c apter ..................................................................................................... 14
6.1 JTAG/SWD debug ................................................................................................................. 14
6.2 SD/MMC slot .......................................................................................................................... 14
6.3 UEXT module ......................................................................................................................... 15
6.4 USB_OTG1 ............................................................................................................................. 16
6.5 USB_OTG2 ............................................................................................................................. 16
6.6 LAN connector ....................................................................................................................... 17
6.7 Arduino/Maple platform ....................................................................................................... 17
6.8 20-pin connectors – PD – PE – PF – PG .............................................................................. 18
6.9 PWR Jack ............................................................................................................................... 19
6.10 Battery connector ................................................................................................................. 20
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OLIMEX© 018 STM3 -E407 user's manual
6.11 BOOT connector .................................................................................................................. 20
6.12 Jumper description .............................................................................................................. 20
6.12.1 PWR_SEL ................................................................................................................................................... 20
6.12.2 B1_1/B1_0 and B0_1/B0_0 ......................................................................................................................... 21
6.12.3 R-T ............................................................................................................................................................... 21
6.12.4 3.3V_E ......................................................................................................................................................... 21
6.12.5 AGND_E ...................................................................................................................................................... 21
6.12.6 AREF_EN .................................................................................................................................................... 21
6.12.7 GPIO port jumpers .................................................................................................................................... 22
6.13 Additional ardware components ...................................................................................... 22
HAPTER 7 HOW TO USE THE BOARD WITH ARDUINO IDE ................... 23
HAPTER 8 BLO K DIAGRAM AND MEMORY ............................................. 24
8. Introduction to t e c apter ..................................................................................................... 24
8.1 Processor family block diagram ........................................................................................... 24
8.2 P ysical memory map ........................................................................................................... 25
HAPTER 9 S HEMATI S ................................................................................... 26
9. Introduction to t e c apter ..................................................................................................... 26
9.1 Eagle sc ematic ...................................................................................................................... 26
9.2 P ysical dimensions ............................................................................................................... 28
HAPTER 10 REVISION HISTORY AND SUPPORT ........................................ 29
10. Introduction to t e c apter ................................................................................................... 29
10.1 Document revision ............................................................................................................... 29
10.2 Hardware revision ............................................................................................................... 30
10.3 Useful web links and purc ase codes ................................................................................. 31
10.4 Product support ................................................................................................................... 32
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OLIMEX© 018 STM3 -E407 user's manual
HAPTER 1 OVERVIEW
1. Introduction to the chapter
Thank you for choosing the STM3 -E407 single board computer from Olimex! This document
provides a user’s guide for the Olimex STM3 -E407 board. As an overview, this chapter gives the
scope of this document and lists the board’s features. The differences between the members of the
STM3 -E407 and STM3 -H407 boards are mentioned. The document’s organization is then
detailed.
The STM3 -E407 development board enables code development of applications running on the
microcontroller STM3 F407ZGT6, manufactured by STMicrocontrollers.
1.1 Features
STM3 F407ZGT6 Cortex-M4 10DMIPS, 1MB Flash, 196KB RAM, 3×1 -bit .4 MSPS
A/D, ×1 -bit D/A converters, USB OTG HS and USB OTG HS, Ethernet, 14 timers, 3 SPI,
3 I C, Ethernet, CANs, 3 1 bit ADCs, 1 bit DACs, 114 GPIOs, Camera interface
JTAG connector with ARM x10 pin layout for programming/debugging
UEXT connector
 x USB-OTG
SD-card
Input DCDC power supply which allows operation from 6-16VDC source
Power and User LEDs
Reset and User buttons
Arduino shield platform with provided headers
4 full 0-pin Ports with the external memory bus for add-on modules
PCB: FR-4, 1.5 mm (0,06 "), soldermask, silkscreen component print
Dimensions: (4.00 x 3.40)” ~ (10 x 86)mm
1.2 H407 or E407?
The major difference between STM3 -H407 and STM3 -E407 is that the latter has built-in
Ethernet (physical level transceiver Microchip's LAN8710A-EZC). STM3 -E407 also features an
extra USB-OTG and a number of SMD jumpers on the bottom which makes the control of the
multiplexing pins easier. STM3 -E407 has x USB-OTG both with a miniUSB interface. STM3 -
H407 has 1x USB-OTG and 1x USB-HOST with the On-The-Go interfaced by miniUSB and the
HOST by USB type A connector.
If you need built-in Ethernet check the STM3 -E407.
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OLIMEX© 018 STM3 -E407 user's manual
1.3 Target market and purpose of the board
STM3 -E407 is a development board featuring a powerful ARM Cortex-M4F microcontroller with
the most important peripherals, interfaces and connectors mounted and ready to use. The board can
be powered by a number of different sources, can be programmed via two different interfaces, has a
TON of GPIO pins available on a number of headers. The board's Arduino platform headers give
another option for enthusiasts who wish to implement support for Arduino/Maple/Pinguino shields
giving the board additional features altogether with the option to add Olimex extension modules on
the OLIMEX UEXT.
The board can be programmed via Arduino IDE using USB_OTG1.
All of the above options make the board quite versatile and suitable for numerous tasks and
situations. The power of ARM and the creativity of OLIMEX come at the best price and the well-
known quality.
Every ARM enthusiast would see STM3 -E407 as an interesting bargain and quite capable board
for its low price.
1.4 Organization
Each section in this document covers a separate topic, organized as follow:
–Chapter 1 is an overview of the board usage and features
–Chapter provides a guide for quickly setting up the board
–Chapter 3 contains the general board diagram and layout
–Chapter 4 describes the component that is the heart of the board: the STM3 F 07ZET6
microcontroller
–Chapter 5 is an explanation of the control circuitry associated with the microcontroller to
reset. Also shows the clocks on the board
–Chapter 6 covers the connector pinout, peripherals and jumper description
–Chapter 7 gives advice on how to use the board with Arduino IDE
–Chapter 8 shows the memory map
–Chapter 9 provides the schematics
–Chapter 10 contains the revision history, useful links and support information
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OLIMEX© 018 STM3 -E407 user's manual
HAPTER 2 SETTING UP THE STM32-E407 BOARD
2. Introduction to the chapter
This section helps you set up the STM3 -E407 development board for the first time.
Please consider first the electrostatic warning to avoid damaging the board, then discover the
hardware and software required to operate the board.
The procedure to power up the board is given, and a description of the default board behavior is
detailed.
2.1 Electrostatic warning
STM3 -E407 is shipped in a protective anti-static package. The board must not be exposed to high
electrostatic potentials. A grounding strap or similar protective device should be worn when
handling the board. Avoid touching the component pins or any other metallic element.
2.2 Requirements
In order to set up the STM3 -E407 optimally, the following items are required:
- JTAG or SWD interface programmer/debugger* – can power the board and gives the ability to
program/debug the board – to choose the correct programmer be sure that you are aware what
software tools you are going to use when programming STM3 -E407, and that the programmer
supports STM3 F407 processor.
*The board can also be programmed with Arduino IDE via USB cable with mini USB connector
using board's USB-OTG1 connector;
Additional components can be acquired in order to increase the functionality of the board:
- External power supply
- USB type “A” to USB type “mini” cable is required for bootlader
- SD-card or extension UEXT modules are recommended but not required
- 3.7V Battery
- MOD-XXXX boards for additional features on the UEXT (RTC, TC, GSM, MP3, RS-485 among
others) – note that you will have to implement the software setup between the boards
- Arduino/Maple/Pinguino shields – every shield is hardware compatible with H407 but will not
work out-of-the-box, software implementation should be considered
Some of the suggested items can be purchased by Olimex, for instance:
ARM-USB-TINY-H – high-speed OpenOCD ARM JTAG debugger
ARM-USB-OCD-H – high-speed OpenOCD ARM JTAG debugger with buffer protection
USB-MINI-CABLE – USB mini to USB-A cable
BATTERY-LIPO1400MAH – lithium-polymer battery 1400mAh
USB-SERIAL-CABLE-F – easy way to connect the board to a computer terminal program using
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OLIMEX© 018 STM3 -E407 user's manual
the BOOT pins
SY0612E – power supply adapter 1 V/0.5A for iMX 33-STM3 -E407
2.3 Powering the board
The board is powered in one of the following ways: 1) by PWR jack, )by JTAG/SWD programmer
(3)by USB-OTG.
The PWR jack should be supplied from a 6V to 16V source with maximum current of 1A from the
power jack. Without additional components and peripherals (no microSD card mounted, nothing
connected to the USB, etc.) the typical consumption is 30mA @ 1 V. For the European customers
we sell an affordable power supply adapter 1 V/0.5A – SY0612E.
It is worth mentioning that the board can NOT be powered by the battery connector. The battery
connected keeps some of the processor's functions remain intact during power down but it provides
insufficient power for the board to operate properly. For example the RTC doesn't lose the values
when there is a battery connected.
2.4 Prebuilt software
Upon powering initially the board's red PWR LED and the green PWR LED should turn on. There
are demo examples available for download at the product's page at the Olimex's web-site.
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OLIMEX© 018 STM3 -E407 user's manual
HAPTER 3 STM32-E407 BOARD DES RIPTION
3. Introduction to the chapter
Here you get acquainted with the main parts of the board. Note the names used on the board differ
from the names used to describe them. For the actual names check the STM3 -E407 board itself.
The board comes with a bag with 4 headers for the Arduino/Maple/Pinguino platform which were
left unsoldered in case you don't wish to use those environments or you don't plan on using shields.
There is also a bag of 4 rubber pads which can be placed in the 4 corner holes of the board. That
way the board will be safe from short-circuiting on the bottom if placed on low-resistance surface.
The placement stability of the board will also increase.
3.1 Layout (top view)
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OLIMEX© 018 STM3 -E407 user's manual
3.2 Layout (bottom view)
On the bottom there are three tables printed – general jumper table, boot mode jumper table, power
mode jumper table. The default positions of the tables are also shown.
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OLIMEX© 018 STM3 -E407 user's manual
HAPTER 4 THE STM32F407ZGT6 MI RO ONTROLLER
4. Introduction to the chapter
In this chapter is located the information about the heart of STM3 -E407 – the Cortex-M4F
microcontroller. The information is a modified version of the datasheet provided by its
manufacturers from ST.
4.1 The STM32F407ZGT6 features
The processor's features according to the official datasheet:
Core: ARM 3 -bit Cortex™-M4 CPU with FPU, Adaptive real-time accelerator (ART
Accelerator™) allowing 0-wait state execution from Flash memory, frequency up to 168
MHz, memory protection unit, 10 DMIPS/1. 5 DMIPS/MHz (Dhrystone .1), and DSP
instructions
Memories
1 Mbyte of Flash memory
19 +4 Kbytes of SRAM including 64-Kbyte of CCM (core coupled memory) data RAM
Flexible static memory controller supporting Compact Flash, SRAM, PSRAM, NOR
and NAND memories
LCD parallel interface, 8080/6800 modes
Clock, reset and supply management
1.8 V to 3.6 V application supply and I/Os
POR, PDR, PVD and BOR
4-to- 6 MHz crystal oscillator
Internal 16 MHz factory-trimmed RC (1% accuracy)
3 kHz oscillator for RTC with calibration
Internal 3 kHz RC with calibration
Sleep, Stop and Standby modes
VBATsupply for RTC, 0×3 bit backup registers + optional 4 KB backup SRAM
3×1 -bit, .4 MSPS A/D converters: 4 channels and 7. MSPS in triple interleaved mode
×1 -bit D/A converters
General-purpose DMA: 16-stream DMA controller with FIFOs and burst support
Up to 17 timers: up to twelve 16-bit and two 3 -bit timers up to 168 MHz, each with up to 4
IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
Debug mode
Serial wire debug (SWD) & JTAG interfaces
Cortex-M4 Embedded Trace Macrocell™
114 I/O ports with interrupt capability
Up to 15 communication interfaces
3 × I C interfaces (SMBus/PMBus)
4 USARTs/ UARTs (10.5 Mbit/s, ISO 7816 interface, LIN, IrDA, modem control)
3 SPIs (37.5 Mbits/s), with muxed full-duplex I S to achieve audio class accuracy via
internal audio PLL or external clock
 × CAN interfaces ( .0B Active)
SDIO interface
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OLIMEX© 018 STM3 -E407 user's manual
Advanced connectivity
USB .0 full-speed device/host/OTG controller with on-chip PHY
USB .0 high-speed/full-speed device/host/OTG controller with dedicated DMA, on-
chip full-speed PHY and ULPI
10/100 Ethernet MAC with dedicated DMA: supports IEEE 1588v hardware,
MII/RMII
8- to 14-bit parallel camera interface up to 54 Mbytes/s
True random number generator
CRC calculation unit
96-bit unique ID
RTC: subsecond accuracy, hardware calendar
For comprehensive information on the microcontroller visit the ST’s web page for a datasheet.
At the moment of writing the microcontroller datasheet has a document name DM00037051.pdf and
can be found at the following link:
http://www.st.com/st-web-
ui/static/active/en/resource/technical/document/datasheet/DM00037051.pdf
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OLIMEX© 018 STM3 -E407 user's manual
HAPTER 5 ONTROL IR UITY AND HARDWARE MODULES
5. Introduction to the chapter
Here you can find information about reset circuit and quartz crystals locations, the power supply
circuit is discussed.
5.1 Reset
STM3 -E407's reset circuit includes R5 (10KΩ), R6 (1 KΩ), C19 (100nF) and a RESET button.
5.2 locks
There are two quartz crystals available on the board:
1 MHz quartz crystal Q1 is connected to pins 3 and 4 of the CORTEX-M4F processor.
Quartz crystal Q is a 3 768Hz RTC (real-time clock) and is connected to pins 8 and 9. The GND
pin of the RTC quartz crystal is not soldered to allow easier change.
5.3 Power supply circuit
The power supply circuit of STM3 -E407 allows flexible input supply from 6V to 16V direct
current. This means a wide range of power supplies, adapters, converters are applicable. The
maximum amperage the board can draw is 1A.
Note that the Li-Po battery connector cannot be used to fully power the board. Its function is to
give an option to save internal data if the board needs to be relocated. It will keep the RTC alive,
for instance.
If you have successfully powered the board the red PWR LED will turn on. Note that it is possible
to have the PWR LED on even if there isn't enough power for proper operation of the board and all
the peripherals currently connected.
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OLIMEX© 018 STM3 -E407 user's manual
HAPTER 6 ONNE TORS AND PINOUT
6. Introduction to the chapter
In this chapter are presented the connectors that can be found on the board all together with their
pinout and notes about them. Jumpers functions are described. Notes and info on specific
peripherals are presented. Notes regarding the interfaces are given.
Note that slashed signals (xxxx/yyyy) in the tables below might mean either multiplexing between
signals or port name correspondence on the processor.
6.1 JTAG/SWD debug
The board can be debugged from the 0-pin JTAG connector either by a JTAG or a SWD
compatible debugger. Below is the table of the JTAG. This interface can be used with the Olimex's
OpenOCD debuggers.
JTAG/SWD interface
Pin # Signal
name Pin # Signal name
1+3.3V 11 -
2+3.3V 12 GND
3PB4/TRST 13 PB3/TDO
4GND 14 GND
5PA15/TDI 15 PB4/TRST
6GND 16 GND
7PA13/TMS 17 -
8GND 18 GND
9PA14/TCK 19 +5V_JTAG
1 GND 2 GND
6.2 SD/MM slot
The microSD card slot is a standard 8pin connector.
We have tested a number of microSD cards on the STM3 -E407 boards and all of them worked fine
regardless manufacturer or capacity. However, keep in mind that some of the lower quality
microSD cards might draw too much current from the slot which might cause power-state problems.
If you suspect the microSD card is causing problems please try using another one of better quality
for better results.
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OLIMEX© 018 STM3 -E407 user's manual
microSD card connector
Pin # Signal name
1DAT2/RES
2CD/DAT3/CS
3CMD/DI
4VDD
5SCL/SCLK
6VSS
7DAT0/RES
8DAT1/RES
Notice that the pad numeration is written at the bottom of STM3 -E407 under the microSD card
connector.
When removing the card, please make sure that you release it from the connector by pushing and
NOT by pulling the card directly (this can damage both the connector and the microSD card).
6.3 UEXT module
STM3 -E407 board has UEXT connector and can interface Olimex's UEXT modules.
For more information on UEXT please visit: https://www.olimex.com/Products/Modules/UEXT/
UEXT connector
Pin # Wire Name Microcontroller port
13.3V -
2GND -
3PC6/USART6_T PC6
4PC7/USART6_R PC7
5PB8/I2C1_SCL PB8
6PB9/I2C1_SDA PB9
7PC2/SPI2_MISO PC2
8PC3/SPI2_MOSI PC3
9PB10/SPI2_SCK/UART3_T PB10
1 PG10/UE T_CS PG10
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OLIMEX© 018 STM3 -E407 user's manual
6.4 USB_OTG1
USB On-The-Go, often abbreviated USB OTG, is a specification that allows USB devices such as
digital audio players or mobile phones to act as a host allowing a USB flash drive, mouse, or
keyboard to be attached and also connecting USB peripherals directly for communication purposes
among them.
Note DFU bootloader uses the USB_OTG1 port, and a "USB micro-A" cable is required. This is the
port used to program the board via Arduino IDE.
Note that the USB-OTG ESD protection ICs are not placed by default. However, there are pads
provided for such protection.
Pin # Signal Name
1+5V_OTG1_PWR
2USB_OTG1_D-
3USB_OTG1_D+
4PA10/OTG1_FS_ID
5GND
6.5 USB_OTG2
USB On-The-Go, often abbreviated USB OTG, is a specification that allows USB devices such as
digital audio players or mobile phones to act as a host allowing a USB flash drive, mouse, or
keyboard to be attached and also connecting USB peripherals directly for communication purposes
among them.
Note that the USB-OTG ESD protection ICs are not placed by default. However, there are pads
provided for such protection.
Pin # Signal name
1+5V_OTG2_PWR
2USB_OTG2_D-
3USB_OTG2_D+
4PB12/OTG2_HS_ID
5GND
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OLIMEX© 018 STM3 -E407 user's manual
6.6 LAN connector
Pin # Signal name
1TD+
2TD-
3RD+
4SHIELD
5SHIELD
6RD-
7SHIELD
8SHIELD
LED Color Usage
Right Green Link status
Left Yellow Activity status
6.7 Arduino/Maple platform
The Arduino/Maple platform connectors ( x6 pin and x8 pin plastic headers) are not mounted but
are included in the package. The reasons for not mounting the headers on the pin holes are two: first
you might not need them if you do not wish to experiment with Arduino/Maple software; second
there are two rows depending on the shield you might want to use the difference between the two
rows is the distance between the two digital rows one is made according to the Arduino shield
standard (e.g. you want to mount the row there if using Arduino certified shield), the other one is
adjusted properly at 100mil step (e.g. you want to solder the digital pins here if using properly
adjusted shields).
The pinhole names are printed near the actual pinhole on the top of the board.
Arduino platform pinholes
CON1 CON2
Pin Signal Name Processor
pin# Pin Signal Name Processor pin#
RST RST 25 A PC0 26
3V3 3.3V - A1 PF6 18
5V 5V - A2 PF7 19
GND GND - A3 PF8 20
GND GND - A4 PF9 21
VIN VIN - A5 PF10 22
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OLIMEX© 018 STM3 -E407 user's manual
Arduino platform pinholes
CON3 CON4
Pin Signal Name Processor pin# Pin Signal Name Processor pin#
D PB7/USART1_R 137 D8 PG12 35
D1 PB6/USART1_T 136 D9 PG15 70
D2 PE2 1 D1 PA4 40
D3 PE4 3 D11 PB5 43
D4 PE5 4 D12 PA6 42
D5 PR6 5 D13 PA5 41
D6 PG7 92 GND AGND 31
D7 PG8 93 AREF AREF 32
6.8 20-pin connectors – PD – PE – PF – PG
The 4 0-pin connectors combine different processor ports and provide very nice GPIO option –
you can use them with your breadboarding wires, you can mount headers, you can take measures,
etc, etc.
Note that all 4 headers come without connectors (unlike the UEXT or the JTAG) and connectors
are not included in the package (unlike the Arduino platform). However they follow the standard
100mil step connectors – not hard to find and mount/solder if needed etc.
PD PE
Pin # Signal name Pin
#Signal name Pin #Signal name Pin # Signal name
1+3.3V 11 PD8 1+3.3V 11 PE8
2GND 12 PD9 2GND 12 PE9
3PD0 13 PD10 3PE0 13 PE10
4PD1 14 PD11 4PE1 14 PE11
5PD2/SD_MMC* 15 PD12 5PE2/D2* 15 PE12
6PD3 16 PD13 6PE3 16 PE13
7PD4 17 PD14 7PE4/D3* 17 PE14
8PD5 18 PD15 8PE5/D4* 18 PE15
9PD6 19 +5V 9PE6/D5* 19 +5V
1 PD7 2 GND 1 PE7 2 GND
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OLIMEX© 018 STM3 -E407 user's manual
PF PG
Pin # Signal name Pin # Signal name Pin
#Signal name Pin # Signal name
1+3.3V 11 PF8/A3* 1+3.3V 11 PG8/D7*
2GND 12 PF9/A4* 2GND 12 PG9
3PF0 13 PF10/A5* 3PG0 13 PG10/UE T_CS
4PF1 14 PF11/A6* 4PG1 14 PG11/T _EN
5PF2 15 PF12 5PG2 15 PG12/D8*
6PF3 16 PF13 6PG3 16 PG13/T D0
7PF4 17 PF14 7PG4 17 PG14/T D1
8PF5 18 PF15 8PG5 18 PG15/D9*
9PF6/A1* 19 +5V 9PG6 19 +5V
1 PF7/A2* 2 GND 1 PG7/D6* 2 GND
Note that all signals marked with asterisk (*) are multiplexed with signals of the Arduino platform.
Those signals can be controlled by the provided jumpers. However, the jumpers are soldered by
default which enables them on the GPIO connector and the Arduino shield at the same time.
PG11, PG13, PG14, PG16 and PG17 are multiplexed with the UEXT and the Ethernet. Their
connection is not controlled by jumpers.
6.9 PWR Jack
The power jack used is the typical one used by Olimex in most of our products – the DC barrel jack
has .0mm inner pin and 6.3mm hole. More information about the exact component might be found
here: https://www.olimex.com/wiki/PWRJACK.
Pin # Signal name
1Power input
2GND
More info about the power supply can be found in chapters and 5 of this manual.
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OLIMEX© 018 STM3 -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
1VBAT
2GND
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- (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-OTG 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- .
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