ARTERY AT-START-F407 User manual

AT-START-F407 User Manual
2020.11.20 1 Rev 1.20
www.arterytek.com
Get started with AT32F407VGT7
Introduction
AT-START-F407 is designed to help you explore the high-performance features of the 32-bit
microcontroller, AT32F407 embedded with ARM Cortex®-M4F with FPU, and help develop your
applications.
AT-START-F407 is an evaluation board based on AT32F407VGT7 chip with LED indicators,
buttons, an USB micro-B connector, an Ethernet RJ45 connector, ArduinoTM Uno R3 extension
connector and an expanded 16 MB SPI Flash memory. This evaluation board embeds
debugging/programming tool AT-Link-EZ without the need of other development tools.

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Contents
1Overview................................................................................................................. 5
1.1 Features................................................................................................................... 5
1.2 Definition of terms .................................................................................................... 5
2Quick start.............................................................................................................. 6
2.1 Get started................................................................................................................6
2.2 Toolchains supporting AT-START-F407 ....................................................................6
3Hardware and layout ............................................................................................. 7
3.1 Power supply selection............................................................................................. 9
3.2 IDD........................................................................................................................... 9
3.3 Programming and debugging .................................................................................10
3.3.1 Embedded AT-Link-EZ...............................................................................................10
3.3.2 20-pin ARM® standardJTAG connector.....................................................................10
3.4 Boot mode selection................................................................................................11
3.5 External clock source ..............................................................................................11
3.5.1 HSE clock source.......................................................................................................11
3.5.2 LSE clock source........................................................................................................11
3.6 LED indicators........................................................................................................ 12
3.7 Buttons...................................................................................................................12
3.8 USB device.............................................................................................................12
3.9 Connect to Bank3 of Flash memory via SPIM interface.......................................... 12
3.10 Ethernet.................................................................................................................. 13
3.11 0 Ω resistors ...........................................................................................................14
3.12 Extension connectors............................................................................................. 15
3.12.1 ArduinoTM Uno R3 extension connector.....................................................................15
3.12.2 LQFP100 I/O extension connector.............................................................................16
4Schematic............................................................................................................. 17
5Revision history................................................................................................... 22

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List of tables
Table 1. Boot mode selection jumper setting..................................................................................... 11
Table 2. GPIO and SPIM jumper setting............................................................................................12
Table 3. 0 Ω resistor setting ...............................................................................................................14
Table 4. ArduinoTM Uno R3 extension connector pin definition.........................................................15
Table 5. Document revision history....................................................................................................22

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List of figures
Figure 1. Hardware block diagram ......................................................................................................7
Figure 2. Top layer...............................................................................................................................8
Figure 3. Bottom layer .........................................................................................................................8
Figure 4. Schematic (AT-Link-EZ).....................................................................................................17
Figure 5. Schematic (microcontroller)................................................................................................18
Figure 6. Schematic (power supply and peripherals)........................................................................19
Figure 7. Schematic (extension connectors).....................................................................................20
Figure 8. Schematic (Ethernet PHY and RJ45 connector)................................................................21

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1 Overview
1.1 Features
AT-START-F407 has the following characteristics:
AT-START-F407 has an on-board AT32F407VGT7 microcontroller that embeds ARM Cortex®-
M4F, 32-bit processor, 1024 KB Flash memory and 96+128 KB SRAM, LQFP100 packages.
On-board AT-Link connector:
−The on-board AT-Link-EZ can be used for programming and debugging (AT-Link-EZ is a
simplified version of AT-Link, and does not support offline mode)
−If AT-Link-EZ is separated from this board by bending over along the joint, AT-START-F407
can be connected to an independent AT-Link for programming and debugging
On-board 20-pin ARM standard JTAG connector (with a JTAG/SWD connector for
programming/debugging)
16 MB SPI Flash EN25QH128A is used as an expanded Flash memory Bank 3
Various power supply methods:
−Through the USB bus of AT-Link-EZ
−Through the USB bus (VBUS) of AT-START-F407
−External 7~12 V power supply (VIN)
−External 5 V power supply (E5V)
−External 3.3 V power supply
4 x LED indicators:
−LED1 (red) used for 3.3 V power-on
−3 x user LED indicators, LED2 (red), LED3 (yellow) and LED4 (green)
2 x buttons (user button and reset button)
8 MHz HSE crystal
32.768 kHz LSE crystal
USB micro-B connector
Ethernet PHY with RJ45 connector
Various extension connectors can be quickly connected into a prototype board and easy to
explore:
−ArduinoTM Uno R3 extension connector
−LQFP100 I/O port extension connector
1.2 Definition of terms
Jumper JPx ON
Jumper installed
Jumper JPx OFF
Jumped not installed
Resistor Rx ON
Short circuit by solder or 0Ω resistor
Resistor Rx OFF
Open

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2 Quick start
2.1 Get started
Configure the AT-START-F407 board in the following order to start the application:
1. Check the Jumper position on the board:
JP1 is connected to GND or OFF (BOOT0 pin is 0, and BOOT0 has an pull-down resistor in the
AT32F407VGT7);
JP4 optional or OFF (BOOT1 is in any state);
JP8 one-piece jumper is connected to the I/O on the right.
2. Connect the AT-START-F407 board to the PC through an USB cable (Type A to micro-B), and
the board will be powered via AT-Link-EZ USB connector CN6. LED1 (red) is always on, and
the other three LEDs (LED2 to LED4) start to blink in turn.
3. After pressing the user button (B2), the blink frequency of three LEDs are changed.
2.2 Toolchains supporting AT-START-F407
ARM®Keil®: MDK-ARM™
IAR™: EWARM

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3 Hardware and layout
AT-START-F407 board is designed around an AT32F407VGT7 microcontroller in LQFP100
package.
Figure 1 shows the connections between AT-Link-EZ, AT32F407VGT7 and their peripherals
(buttons, LEDs, USB, Ethernet RJ45, SPI Flash memory and extension connectors)
Figure 2 and Figure 3 shows these features on the AT-Link-EZ and AT-START-F407 board.
Figure 1. Hardware block diagram
AT32F407VGT7
I/O
I/O
I/O
I/O
NRST
Reset
button
User
button
Arduino extension connector
Arduino extension connector
LQFP100 I/O extension connector
LQFP100 I/O extension connector
20-pin ARM standard
JTAG connector
AT-Link
connector
AT-Link-EZ
USER LEDs
LED2~LED4
Micro-USB
Micro-USB
SPI Flash
Bank3
SPIM
Ethernet
RJ45 Ethernet PHY

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Figure 2. Top layer
Figure 3. Bottom layer
External 7~12V power User LED
SPI Flash memory
AT32F407VGT7
Arduino Uno extension connector
LQFP100 I/O extension connector
USART1
connector
HSE 8 MHzcrystal
Arduino Uno
extension connector
USB micro-B
connector
DM9162NP
(Ethernet PHY)
Arduino Uno extension connector
LQFP100 I/O extension connector
I/O and USB
jumper
User button
Reset
button
AT-Link connector
Power
LED
IDD
measurement
jumper
AT-Link-EZ
20-pin ARM
standard JTAG
connector
Boot mode
selection
jumper
LSE 32.768 kHz crystal
RJ45
connector

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3.1 Power supply selection
The 5 V power supply of AT-START-F407 can be provided through a USB cable (either through the
USB connector CN6 on the AT-Link-EZ or USB connector CN1 on the AT-START-F407), or
through an external 5 V power supply (E5V), or by an external 7~12 V power supply (VIN) via 5V
voltage regulator (U1) on the board. In this case, the 5 V power supply provides the 3.3 V power
required by the microcontrollers and peripherals by means of the 3.3 V voltage regulator (U2) on
the board.
The 5 V pin of J4 or J7 can also be used as an input power source. The AT-START-F407 board
must be powered by a 5 V power supply unit.
The 3.3 V pin of J4 or the VDD pin of J1 and J2 can also be directly used as 3.3 V input power
supply. AT-START-F407 board must be powered by a 3.3 V power supply unit.
Note: Unless 5 V is provided through the USB connector (CN6) on the AT-Link-EZ, the AT-Link-EZ will
not be powered by other power supply methods.
When another application board is connected to J4, the VIN, 5 V and 3.3 V pins can be used as
output power; 5V pin of J7 used as 5 V output power; the VDD pin of J1 and J2 used as 3.3 V
output power.
3.2 IDD
In the event of JP3 OFF (symbol IDD) and R13 OFF, it is allowed to connect an ammeter to
measure the power consumption of AT32F407VGT7.
JP3 OFF, R13 ON
AT32F407VGT7 is powered. (Default setting, and JP3 plug is not mounted before shipping)
JP3 ON, R13 OFF
AT32F407VGT7 is powered.
JP3 OFF, R13 OFF
An ammeter must be connected to measure the power consumption of AT32F407VGT77 (if
there is no ammeter, the AT32F407VGT7 cannot be powered).

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3.3 Programming and debugging
3.3.1 Embedded AT-Link-EZ
The evaluation board embeds Artery AT-Link-EZ programming and debugging tool for users to
program/debug the AT32F407VGT7 on the AT-START-F407 board. AT-Link-EZ supports SWD
interface mode and supports a set of virtual COM ports (VCP) to connect to the
USART1_TX/USART1_RX (PA9/PA10) of AT32F407VGT7. In this case, PA9 and PA10 of
AT32F407VGT7 will be affected by AT-Link-EZ as follows:
PA9 is weakly pulled up to high level by the VCP RX pin of AT-Link-EZ;
PA10 is strongly pulled up to high level by the VCP TX pin of AT-Link-EZ
Note: The user can set R9 and R10 OFF, then the use of PA9 and PA10 of AT32F407VGT7 is not subject
to the above restrictions.
Please refer to AT-Link User Manual for complete details on the operations, firmware upgrade and
precautions of AT-Link-EZ.
The AT-Link-EZ PCB on the evaluation board can be separated from AT-START-F407 by bending
over along the joint. In this case, AT-START-F407 can still be connected to the CN7 of AT-Link-EZ
through CN2 (not mounted before shipping), or can be connected with another AT-Link to continue
the programming and debugging on the AT32F407VGT7.
3.3.2 20-pin ARM® standardJTAG connector
AT-START-F407 also reserves JTAG or SWD general-purpose connectors as
programming/debugging tools. If the user wants to use this interface to program and debug the
AT32F407VGT7, please separate the AT-Link-EZ from this board or set R41, R44 and R46 OFF,
and connect the CN3 (not mounted before shipping) to the programming and debugging tool.
It is recommended to use AT-Link series development tools to experience the best debugging
environment despite Artery MCUs compatible with most of the 3rd party development tools.