ATMEL ATSAMC21MOTOR Smart ARM-Based Microcontrollers User Guide

ATSAMC21MOTOR Smart ARM-Based Microcontrollers
User Guide

ATSAMC21MOTOR Smart ARM-Based Microcontrollers

SMART ARM-based Microcontrollers
ATSAMC21MOTOR
USER GUIDE

ATSAMC21 Microcontroller Card for Atmel Motor Control Starter Kit

The ATSAMC21J18A is an MCU card for Atmel® Motor control starter kits. The hardware has the Atmel SMART ARM® -based MCU, ATSAMC21J18A, with integrated on-board debug support. The MCU card can be directly used with the ATSAMBLDCHV-STK® high voltage motor control kit and the currently available ATSAMD21BLDC24V-STK, a low voltage BLDC, PMSM motor control starter kit. The kit contains a driver board hardware with half-bridge power MOSFET drivers, current and voltage sensing circuit, Hall, and Encoder interface, fault protection circuits, etc. Supported by the Atmel studio integrated development platform, the kit provides easy access to the features of ATSAMC21J18A MCU and explains how to integrate the device in a custom motor control application. Plug-able MCU cards are  vailable from Atmel, supporting other SMART ARM MCUs.

ATSAMC21MOTOR Features

ATSAMC21MOTOR has the following features:
The same port pins are multiplexed between multiple functionalities. PFC, CAN, QTouch® , etc. interfaces are supported only in ATSAMBLDCHV-STK hardware as indicated below.

• Debug support using on-board Atmel EDBG device
• TCC PWM signals for three-phase half-bridge drive
• ADC channels for common shunt and individual shunt phase current sensing
• ADC channels for motor BEMF sensing
• TCC PWM signals for PFC hardware drive (High Voltage kit)
• ADC channels for PFC current sensing (High Voltage kit)
• AC channels for BEMF signals (Low Voltage kit)
• EXTINT hall sensor interface
• EXTINT encoder sensor interface
• PTC QTouch Interface signals (High Voltage kit)
• CAN interface (High Voltage kit)
• Atmel Xplained PRO extension signals support (Low Voltage kit)
• Communication and Power status LEDs

ATSAMC21MOTOR Kit Content

ATSAMC21MOTOR Kit contains an ATSAMC21J18A MCU card that is pre-programmed with hall sensor based block commutation firmware for the ATSAMD21BLDC24V-STK setup. A quick start guide can be found in the ATSAMBLDC24V-STK User quide for Atmel Low voltage BLDC motor control kit. A nylon snap lock is attached to the MCU card that can be rotated to attach the card to the Driver base board in ATSAMD21BLDC24V-STK.
Figure 3-1. ATSAMC21MOTOR Kit Content

Design Documentation and Relevant Links

The following list contains links to the most relevant documents and software for ATSAMC21MOTOR:

• ATSAMC21MOTOR – Product page.
• ATSAMC21MOTOR User Guide – PDF version of this User Guide.
• ATSAMD21BLDC24V-STK – Product page.
• ATSAMBLDC24V-STK User guide – User guide for Atmel Low voltage BLDC motor control kit. It contains the quick start guide instructions and driver board descriptions.
• ATSAMD21BLDC24V-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 Visualizer can receive data from various sources such as the Embedded Debugger Data Gateway Interface found on Xplained Pro boards and COM ports.
• Xplained Pro products – Atmel Xplained Pro is a series of small-sized and easy-to-use evaluation kits for Atmel microcontrollers and other Atmel products. It consists of a series of low-cost MCU boards for evaluation and demonstration of features and capabilities of different MCU families.
• ATSAMC21MOTOR – MCU datasheet.

ATSAMC21J18A MCU Board

The main components on the ATSAMC21MOTOR MCU card are highlighted in the PCB and in the block diagram given below.
Figure 5-1. MCU Board PCB Figure 5-2. MCU Board Block Diagram

5.1. Power Supply
The ATSAMC21J18A MCU takes 5VDC supply from the 67-pin edge connector. The EDBG debug MCU operates on a 3.3VDC supply from the same edge connector. The power supply selection jumper on the Driver board (ATSAMBLDCHV-STK and ATSAMBLDC24V-STK) should be connected to 5V (silk screen text) selection.
5.2. Main MCU Circuit
The ATSAMC21MOTOR has an ATSAMC21 device. The device is intended to work with the MCU internal clock source. An external reset switch is connected to the MCU RESET pin.
5.3. Embedded Debugger
The ATSAMC21J18A MCU is interfaced to the EDBG debug device. The EDBG uses SWD interface for programming and debugging the main MCU. A debug header is also provided on the MCU board with ARM Cortex® debug pinout. An external debugger can be connected to this debug port. The DGI is a proprietary communication interface used by the Atmel Data Visualizer software to communicate with the development kits through the EDBG. The SERCOM5 of the ATSAMC21J18A connected to the EDBG device, supports the DGI SPI interface and uses the Atmel ADP protocol. The MCU SERCOM5 is also connected to the UART channel of the EDBG through a pair of “normally open” jumpers; J201 and J202. 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 USB enumerates as a composite device supporting debug, DGI SPI, and CDC interfaces.
5.4. 67-pin MCU-DRIVER Board Interface
MCU pins are connected to the 67-pin interface header as given in the table below. The MCU card can be used with the Motor control driver kits from Atmel. The table given below describes the interface with Atmel low voltage motor control starter kit. Signals indicated by “||” are jumper connected pins that share directly connected functionality. The normally-open jumper needs to be shorted in the PCB in order to access these additional features.
Table 5-1. ATSAMBLDC24V-STK and ATSAMC21J18A MCU Card Interface (67 pin NGFF connector) Description

PIN LV INTERFACE Name| LV DRIVER BOARD function| SAM C21 PIN| SAM C21 function
---|---|---|---
1     EDBG USB HSP| EDBG USB| EDBG_USB_HS_P| EDBG_USB_HS_P
2     NC| NC| PA24| CAN TX
3     EDBG USB HSN| EDBG USB| EDBG_USB_HS_N| EDBG_USB_HS_N
4     EDBG ID2| EDBG_ID2/EXT1_1| EDBG PB01| EDBG ID2
5     NC| NC| PA25| CAN RX
6     EDBG ID1| EDBG_ID1| EDBG PA28| EDBG_ID1
7     MCU USB DP| TARGET_USB_HS_P| NC| NC
8     TARGET USB VBUS| VCC_TARGETUSB P5V0| NC| NC
9     MCU USB DN| TARGET_USB_HS_N| NC| NC
10    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| TWI_SDA, EXT1_11| PA22| SERCOM3(PAD0)
13    TEMP SCL| TWI_SCL, EXT_12| PA23| SERCOM3(PAD1)
14    FLASH SS| SPI_SS| PB13| SERCOM4(PAD1)
15    FLASH MISO| SPI_MISO, EXT1_17| PB12| SERCOM4(PAD0)
16    FLASH SCK| SPI_SCK, EXT1_18| PB15| SERCOM4(PAD3)
17    FLASH MOSI| SPI_MOSI, EXT1_16| PB14| SERCOM4(PAD2)
18    MCU GPIO1| EXT1_7(GPIO1)| PA19| PTC(X5)
19    MCU GPIO2| EXT1_8(GPIO2)| PB03| TC6(W1)
20    MCU GPIO3| EXT_3| PA02| ADC0(AIN0)
21    MCU GPIO4| NC(GPIO4)| PB22| TC7(WO0)
22    MCU GPIO5| EXT1_5(GPIO5)| PB31| GPIO
23    MCU GPIO6| EXT1_6(GPIO6)| PA17| EXTINT1
24    MCU GPIO7| TempAlert(GPIO7)| PA27| EXTINT15
25    OCP| OCP(GPIO8)| PA03| ADC0(AIN1)
26    EXT1 RXD| UART RXD EXT1_13| PB17| SERCOM5(PAD1)
27    EXT1 TXD| UART TXD_EXT1_14| PB02| SERCOM5(PAD0)
28    PWM UH| FET Driver| PB30| TCC0(WO0)
29    PWM UL| FET Driver| PA14| TCC0(WO4)
30    PWM VH| FET Driver| PA05| TCC0(WO1)
---|---|---|---
31    PWM VL| FET Driver| PA15| TCC0(WO5)
32    PWM WH| FET Driver| PA10| TCC0(WO2)
33    PWM WL| FET Driver| PA16| TCC0(WO6)
34    MCU_GPIO8 (ISENSE_COMMON)| EXT_15| PB05| ADC1(AIN7)
35    ATA RESET| EXT1_4(GPIO10)| PB16| GPIO
36    ATA WD| EXT1_10(GPIO11)| PA12| TCC2(WO0)
37    ATA SLEEP| EXT1_9(GPIO12)| PA13| TCC2(WO1)
38    USHUNT_ADC| Current sense| PB08| ADC0(AIN2)
39    VSHUNT_ADC| Current sense| PB09| ADC0(AIN3)
40    WSHUNT_ADC| Current sense| PA08| ADC0(AIN8)
41    MOTOR VDC (V SENSE)| MOTOR_ADC| PA09| ADC0(AIN9)
42    BEMF U_ADC| BEMF sense ADC| PB00| ADC1(AIN0)
43    BEMF V_ADC| BEMF sense ADC| PB01| ADC1(AIN1)
44    BEMF_W_ADC| BEMF sense ADC| PB06| ADC1(AIN8)
45    BEMF UP| BEMD sense AC| PA04| ADC0(AIN4)
46    BEMF UN| BEMD sense AC| PB07| ADC1(AIN9)
47    BEMF VP| BEMD sense AC| PA06| ADC0(AIN6)
48    BEMF VN| BEMD sense AC| NC| NC
49    BEMF WP| BEMD sense AC| PA07| ADC0(AIN7)
50    BEMF WN| BEMD sense AC| NC| NC
51    HALL1| Hall interface| PB11| EXTINT11
52    HALL2| Hall interface| PB04| EXTINT4
53    HALL3| Hall interface| PA28| EXTINT8
54    HALL TRX OE| HALL_TRX_OE| NC| NC
55    ENCODER_A| Encoder Interface| PA18| EXTINT2
56    ENCODER_B| Encoder Interface| PB10| EXTINT10
57    ENCODER_Z| Encoder Interface| PB23| EXTINT7
58    ENCODER_EN| ENCODER EN| NC| NC
59    NC| NC| VCC_P3V3| VCC_P3V3
60    MCU BRAKE| NC| PA11| TC1(WO1)
61    NC| NC| VCC-P3V3| VCC_P3V3
62    3V3 SUPPLY for MCU| VCC_P| VCC_TARGET_P5V0| VCC_TARGET_P5V0
---|---|---|---
63    3V3 SUPPLY for MCU| VCC_P| VCC_TARGET_P5V0| VCC_TARGET_P5V0
64    GND| GND| GND| GND
65    GND| GND| GND| GND
66    GND| GND| GND| GND
67    GND| GND| GND| GND

Product Compliance **

**

RoHS and WEEE
The Atmel ATSAMC21MOTOR and its accessories are manufactured in accordance to both the RoHS Directive (2002/95/EC) and the WEEE Directive (2002/96/EC).
CE and FCC
The Atmel ATSAMC21MOTOR unit has been tested in accordance to the essential requirements and other relevant provisions of Directives:

• Directive 2004/108/EC (class B)
  

• FCC rules part 15 subpart B

The following standards are used for evaluation:

• EN 61326-1 (2013)
• FCC CFR 47 Part 15 (2013)

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 abovementioned standards. The frequency and magnitude of the emissions will be determined by several factors, including layout and routing of the target application with which the product is used.

Identifying Product ID and Revision

The revision and product identifier of the ATSAMC21MOTOR can be found by looking at the sticker on the bottom side of the PCB. The identifier and revision are printed in plain text as A09-nnnn\rr, where nnnn is the identifier and rr is the revision. Also the label contains a 10-digit unique serial number. The product identifier for  ATSAMC21MOTOR is A09-2550.

Revision

Kit assembly revision for initial version is A09-2550/03. Known issues in this revision are:
• PWM silk text for WH and UH are swapped

Document Revision History

Doc. rev……….42747A
Date……………………..09/2016
Comment……………. Initial document release

Atmel ATSAMC21MOTOR [USER GUIDE] Atmel-42770A-ATSAMC21MOTOR_User Guide-09/2016
2016 Atmel© Corporation. / Rev.: Atmel-42770A-ATSAMC21MOTOR_User Guide-09/2016
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