Atmel ATSAMD21BLDC24V-STK User Manual Download | Manualshive

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3.

ATSAMD21BLDC24V-STK Hardware

The ATSAMD21BLDC24V-STK has a two-board architecture. The driver base board contains drive
circuits, sensor circuits, protection circuits, power supply, etc., and the MCU board (MCU card) contains
the MCU, clock circuit, and debug circuit. The MCU card is inserted into the 67-pin NGFF standard
interface on the driver board. The ATSAMD21BLDC24V-STK comes with an ATSAMD21J18A MCU card.

3.1.

ATSAMD21BLDC24V-STK MCU Board

The main components in the ATSAMD21MOTOR MCU card are highlighted in the PCB and block
diagram given below.

Figure 3-1. MCU Board PCB

Atmel ATSAMD21BLDC24V-STK [USER GUIDE]

Atmel-42681A-SMART-ARM-based-Motor-Control-Kit_User Guide-02/2016

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Summary of Contents for ATSAMD21BLDC24V-STK

Page 1: ...SMART ARM based Motor Control Kit ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control Kit_User Guide 02 2016 ...

Page 2: ...V STK 6 3 ATSAMD21BLDC24V STK Hardware 12 3 1 ATSAMD21BLDC24V STK MCU Board 12 3 2 ATSAMD21BLDC24V STK Driver Board 13 3 3 ATSAMD21BLDC24V STK MCU driver Interface 23 4 Hardware Revision History and Known Issues 26 4 1 Identifying Product ID and Revision 26 4 2 Revision 26 5 Product Compliance 27 6 Revision History 28 Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control ...

Page 3: ...tegrated development platform the kit provides easy access to the features of ATSAMD21J18A MCU and explains how to integrate the device in a custom motor control application Pluggable MCU cards are available from Atmel supporting other SMART ARM MCUs 1 1 ATSAMD21BLDC24V STK Features ATSAMD21BLDC24V STK has the following features Pluggable MCU card interface Debug support using on board Atmel EDBG ...

Page 4: ...rt using unique ID device 1 2 ATSAMD21BLDC24V STK Kit Content ATSAMD21BLDC24V STK Kit contains the PCBs BLDC motor power adaptor and USB cable to get started and running the motor in the kit The kit contains the following items 1 AT24VBLDC driver board 2 ATSAMD21MOTOR MCU card 3 LDO brush less DC motor LDO 42BL02402 0026B 002 4 Fully assembled chassis plate 5 24V 4A AC adapter EDAC EA11011E 240 6 ...

Page 5: ...C24V STK Design Documentation Package containing schematics BOM assembly drawings 3D plots layer plots etc Atmel Studio Free Atmel IDE for development of C C and assembler code for Atmel microcontrollers EDBG User Guide User guide containing more information about the on board Embedded Debugger Atmel Data Visualizer Atmel Data Visualizer is a program used for processing and visualizing data Data V...

Page 6: ...nect white color cable to PIN Figure 2 1 Kit with Power and USB Ports Connected 3 Switch ON the power adaptor 4 Connect the Micro USB cable to the EDBG USB connector and PC USB port 5 The power LED indications on the MCU board are now ON 6 Open Data Visualizer 7 In the Data Visualizer Connect Window Choose the kit from the DGI control panel s drop down list Atmel ATSAMD21BLDC24V STK USER GUIDE Atm...

Page 7: ...range LED in the MCU board shall now blink 9 The Data Visualizer default window will pop up once the connection is made All the fields shall show default values Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control Kit_User Guide 02 2016 7 ...

Page 8: ...igure 2 3 Data Visualizer Start Window 10 Click on Start to turn the motor ON with default values Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control Kit_User Guide 02 2016 8 ...

Page 9: ...ange the value in a field and press Enter For instance to change the motor speed type in the desired speed within the motor s rating and press Enter Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control Kit_User Guide 02 2016 9 ...

Page 10: ...er 12 Stop the Motor by clicking the Stop button 13 To change direction of rotation after Stop choose CCW in radio button and click Start Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control Kit_User Guide 02 2016 10 ...

Page 11: ...Figure 2 6 Data Visualizer Change Direction 14 Adjust the graph by checking Automatically fit Y Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control Kit_User Guide 02 2016 11 ...

Page 12: ...uit and debug circuit The MCU card is inserted into the 67 pin NGFF standard interface on the driver board The ATSAMD21BLDC24V STK comes with an ATSAMD21J18A MCU card 3 1 ATSAMD21BLDC24V STK MCU Board The main components in the ATSAMD21MOTOR MCU card are highlighted in the PCB and block diagram given below Figure 3 1 MCU Board PCB Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based M...

Page 13: ...through the EDBG SERCOM4 of the ATSAMD21J18A connected to the EDBG device support DGI SPI interface and uses Atmel ADP protocol The MCU SERCOM4 is also connected to the UART channel of the EDBG through a pair of normally open jumpers the J200 and J201 Shorting these jumpers will enable the CDC UART interface for the main MCU High Speed USB port of the EDBG is accessible at the driver board EDBG US...

Page 14: ...rfaced to the main MCU and EDBG device in the MCU board Temperature sensor serial flash XPRO interface header and UID chip circuits are the other features included in the driver board hardware The figure below shows the main components and block diagram of driver board Figure 3 3 ATSAMD21BLDC24V STK Driver Board PCB Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control Ki...

Page 15: ... high side Power MOSFET in the half bridge The bootstrap capacitor is tied between PIN5 and PIN8 of the NCP5106 through a resistor C5 is the bootstrap capacitor and D1 is the bootstrap diode for phase U half bridge as shown in the figure below The bootstrap capacitor value is chosen based on the total charge to be supplied by the capacitor and maximum allowable voltage drop on the bootstrap capaci...

Page 16: ...rcuit enables measurement of individual phase currents using the ADC channel of the MCU The figure below shows the sense circuit for the U phase and reference generator R30 is the current shunt and op amp U8 is configured in inverting differential amplifier configuration Voltage offset is added to the sense output which is the reference voltage output generated from the MCU supply voltage MCU supp...

Page 17: ...otor DC supply is divided by network R79 R80 and connected to ADC reference and analog comparator Figure 3 8 Back EMF DC Bus Voltage Sense Circuit 3 2 5 Over voltage Protection OVP DC bus voltage is monitored by the voltage sense circuit If the voltage gets higher than 30VDC the over voltage protection will shut down the FET driver The OVP circuit is shown in the figure below Sense voltage is dete...

Page 18: ...down U5 will cut off the MOSFET driver and can be switched back to active condition by pressing the SW2 push button Figure 3 10 Over current Protection Circuit 3 2 7 Hall Sensor Interface The Hall sensor interface uses NTS0104 level translator The interface is tested with motors with open drain and push pull type Hall sensor output The LDO motor supplied with ATSAMD21BLDC24V STK has open drain Hal...

Page 19: ...supplied with the kit Table 3 1 EXT1 Xplained PRO Extension Header Pin Pin name 67 pin interface Driver board connections SAMD21J18A port 1 ID_2 4 EDBG_ID2 EXT1_1 EDBG_PB01 2 GND 67 GND 3 ADC 20 EXT_3 NC 4 ADC 35 EXT1_4 GPIO10 NC 5 GPIO5 22 EXT1_5 GPIO5 PB31 6 GPIO6 23 EXT1_6 GPIO6 PA17 7 PWM 18 EXT1_7 GPIO1 PA19 8 PWM 19 EXT1_8 GPIO2 PB08 9 IRQ GPIO 37 EXT1_9 GPIO12 NC 10 SPI_SS_B GPIO 36 EXT1_10...

Page 20: ...PA20 SERCOM5 PAD2 EXT1_17 FLASH SCK 16 PB17 SERCOM5 PAD1 EXT1_18 FLASH MOSI 17 PB16 SERCOM5 PAD0 EXT1_16 3 2 12 UID Identification Chip The UID chip is a unique ID chip used by the EDBG interface to enable automatic board identification in Atmel Studio When the motor control evaluation board is connected to the USB port the Atmel studio recognizes it and load the necessary software and documentati...

Page 21: ...ints on the Driver Board 3 2 15 Motor Specification Specification and wiring for the motor are given in the figure below Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control Kit_User Guide 02 2016 21 ...

Page 22: ...Figure 3 12 Motor Specification Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control Kit_User Guide 02 2016 22 ...

Page 23: ...0 EDBG USB VBUS VCC_EDBG_USB_P5 V0 VCC_EDBG_USB_P5 V0 VCC_EDBG_USB_P5 V0 11 TARGET_USB_ID TARGET_USB_ID NC NC 12 TEMP SDA TEMP_SDA EXT1_11 PA22 SERCOM3 PAD0 13 TEMP SCL TEMP_SCL EXT_12 PA23 SERCOM3 PAD1 14 FLASH SS SPI_SS PA21 SERCOM5 PAD3 15 FLASH MISO SPI_MISO EXT1_17 PA20 SERCOM5 PAD2 16 FLASH SCK SPI_SCK EXT1_18 PB17 SERCOM5 PAD1 17 FLASH MOSI SPI_MOSI EXT1_16 PB16 SERCOM5 PAD0 18 MCU GPIO1 EX...

Page 24: ...DC PB00 AIN8 ADC 43 BEMF V_ADC BEMF_VADC PB01 AIN9 ADC 44 BEMF_W_ADC BEMF_WADC PB06 AIN14 ADC 45 BEMF UP BEMF_UP PA04 AIN0 AC 46 BEMF UN BEMF_UN PA05 AIN1 AC 47 BEMF VP BEMF_VP PA06 AIN2 AC 48 BEMF VN BEMF_VN PA07 AIN3 AC 49 BEMF WP BEMF_WP PB07 AIN0 AC1 50 BEMF WN BEMF_WN PB07 AIN1 AC1 51 HALL1 HALL1 PA03 EXTINT3 52 HALL2 HALL2 PA18 EXTINT2 53 HALL3 HALL3 PA28 EXTINT8 54 HALL TRX OE HALL_TRX_OE P...

Page 25: ...GET_P3V3 NC 63 3V3 SUPPLY for MCU VCC_P VCC_TARGET_P3V3 NC 64 GND GND GND NC 65 GND GND GND NC 66 GND GND GND NC 67 GND GND GND NC Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control Kit_User Guide 02 2016 25 ...

Page 26: ...0 digit serial number unique to each kit assembly that contains the PCBs motor and chassis The product identifier for ATSAMD21BLDC24V STK is A09 2671 4 2 Revision Kit assembly revision for initial version is A09 2671 03 Known issues in this revision are The driver board should be powered OFF when the user is changing the power supply selection switch or power supply selection jumper Overall power ...

Page 27: ...3 The Technical Construction File is located at Atmel Norway Vestre Rosten 79 7075 Tiller Norway Every effort has been made to minimize electromagnetic emissions from this product However under certain conditions the system this product connected to a target application circuit may emit individual electromagnetic component frequencies which exceed the maximum values allowed by the above mentioned ...

Page 28: ...6 Revision History Doc Rev Date Description 42681A 02 2016 Initial document release Atmel ATSAMD21BLDC24V STK USER GUIDE Atmel 42681A SMART ARM based Motor Control Kit_User Guide 02 2016 28 ...

Page 29: ...NFORMATION ARISING OUT OF THE USE OR INABILITY TO USE THIS DOCUMENT EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and products descriptions at any time without notice Atmel does not make any commitmen...

Page 30: ...Mouser Electronics Authorized Distributor Click to View Pricing Inventory Delivery Lifecycle Information Atmel ATSAMD21BLDC24V STK ...

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