Microchip Technology SAM L10 Xplained Pro User manual

SAM L10/L11 Xplained Pro User Guide
Preface
The Microchip® SAM L10 and SAM L11 Xplained Pro evaluation kits are hardware platforms for
evaluating the SAM L10/L11 microcontrollers (MCUs). Each kit is supported by the Atmel Studio
integrated development platform, which provides an easy access to the features of the microcontroller.
The Xplained Pro MCU series evaluation kits include an on-board embedded debugger, hence external
tools are not required to program or debug the microcontroller. The Xplained Pro extension kit offers
additional peripherals to extend the features of the board and ease the development of custom designs.
© 2018 Microchip Technology Inc. User Guide DS70005359B-page 1

Table of Contents
Preface............................................................................................................................ 1
1. Introduction................................................................................................................3
1.1. Features....................................................................................................................................... 3
1.2. Kit Overview................................................................................................................................. 3
2. Getting Started.......................................................................................................... 5
3. Xplained Pro.............................................................................................................. 6
3.1. Embedded Debugger................................................................................................................... 6
3.2. Xplained Pro Analog Module........................................................................................................7
3.3. Hardware Identification System....................................................................................................8
3.4. Power Sources............................................................................................................................. 9
3.5. Xplained Pro Headers and Connectors........................................................................................9
4. Hardware User Guide..............................................................................................12
4.1. Connectors................................................................................................................................. 12
4.2. Peripherals................................................................................................................................. 17
4.3. Embedded Debugger Implementation........................................................................................18
5. XAM Configuration.................................................................................................. 21
6. Identifying Product ID and Revision........................................................................ 23
7. Revision History.......................................................................................................24
The Microchip Web Site................................................................................................ 25
Customer Change Notification Service..........................................................................25
Customer Support......................................................................................................... 25
Microchip Devices Code Protection Feature................................................................. 25
Legal Notice...................................................................................................................26
Trademarks................................................................................................................... 26
Quality Management System Certified by DNV.............................................................27
Worldwide Sales and Service........................................................................................28
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1. Introduction
1.1 Features
The following are key features of the board:
• ATSAML10E16A-AU/ATSAML11E16A-AU microcontrollers
• One mechanical reset button
• One mechanical programmable button
• One QTouch® button
• One user LED (yellow)
• 32.768 kHz crystal
• ATECC508A CryptoAuthentication™ IC
• Two Xplained Pro extension headers
• mikroBUS™ header
• X32 header
• Embedded debugger
– Auto ID for board identification in Atmel Studio
– One status LED (yellow)
– One board power LED (green)
– Symbolic debug of complex data types, including scope information
– Programming and debugging, including power measurements
– Data Gateway Interface: SPI, I2C, four GPIOs
– Virtual COM port (CDC)
• Embedded current measurement circuitry with Atmel Data Visualizer support for data visualization
• USB powered
1.2 Kit Overview
The Microchip SAM L10 and SAM L11 Xplained Pro Evaluation kits are hardware platforms for the
evaluation of the Microchip SAM L10/L11 devices.
The Evaluation kit part numbers are as follows:
• SAM L10 Xplained Pro: DM320204
• SAM L11 Xplained Pro: DM320205
The kit offers a set of features that enables the user to get started with the microcontroller peripherals
immediately and to obtain an understanding of how to integrate the device in their required design.
Introduction
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Figure 1-1. SAM L10 Xplained Pro Evaluation Kit Overview
Introduction
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2. Getting Started
Follow these steps to explore the Microchip Xplained Pro platform:
1. Download Atmel Studio.
2. Launch Atmel Studio.
3. Connect the debug USB port on the kit to the computer using a USB cable (Standard-A to Micro-B
or Micro-AB).
When the Xplained Pro MCU kit is connected to the computer for the first time, the operating system will
install the software driver. The driver file supports both the 32-bit and 64-bit versions of Microsoft®
Windows®XP, Windows Vista®, Windows 7, Windows 8, and Windows 10.
When the Xplained Pro MCU board is powered, the power LED (green) will glow and Atmel Studio will
autodetect the specific Xplained Pro MCU and extension boards that are connected to it. Atmel Studio will
present relevant information, such as datasheets and kit documentation.
The SAM L10/L11 devices are programmed and debugged by the on-board embedded debugger,
therefore, no external programmer or debugger tool is required.
Getting Started
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3. Xplained Pro
The Xplained Pro is an evaluation platform that provides the full Microchip microcontroller experience.
The platform consists of a series of Microcontrollers (MCUs) and extension boards. These are integrated
with Atmel Studio, which contains Advanced Software Framework (ASF) drivers, demo code, support
data streaming, and so on.
The Xplained Pro MCU boards support a wide range of Xplained Pro extension boards, and are
connected through a set of standardized headers and connectors. Each extension board has an
identification (ID) chip to uniquely identify which boards are connected to an Xplained Pro MCU board.
This information is used to present relevant user guides, application notes, data sheets, and example
code through Atmel Studio.
3.1 Embedded Debugger
The Xplained Pro contains the Microchip Embedded Debugger (EDBG) for on-board debugging. The
EDBG is a complex USB device with three interfaces, such as a debugger, virtual COM port, and a data
gateway interface (DGI). Together with Atmel Studio, the EDBG debugger interface can program and
debug the microcontroller. On the SAM L10/SAM L11 Xplained Pro, the SWD interface is connected
between the EDBG and the microcontroller.
The virtual COM Port is connected to a UART on the microcontroller and provides a straightforward way
to communicate with the target application through terminal software. It offers variable baud rate, parity,
and stop bit settings. Note that the settings on the microcontroller must match the settings given in the
terminal software.
Note: The virtual COM port in the EDBG requires the terminal software to set the data terminal ready
(DTR) signal to enable the UART pins connected to the microcontroller. If the DTR signal is not enabled,
the UART pins on the EDBG is kept in high-z (tristate), rendering the COM port unusable. The DTR signal
is set automatically by some terminal software, but it must be manually enabled in the terminal.
The DGI consists of several physical interfaces for communication with the host computer.
Communication over the interfaces is bidirectional. It can be used to send events and values from the
microcontroller or as a generic printf-style data channel. Traffic over the interfaces can be time stamped
on the EDBG for accurate tracing of events. Timestamping imposes an overhead that reduces maximum
throughput. The Atmel Data Visualizer Extension, installed with Atmel Studio, is used to send and receive
data through DGI.
The EDBG controls two LEDs on the SAM L10/SAM L11 Xplained Pro: a power LED and a status LED.
The following table provides how the LEDs are controlled in different operation modes.
Table 3-1. EDBG LED Control
Operation Mode Power LED Status LED
Normal Operation Power LED is lit when power is
applied to the board.
Activity indicator, LED flashes
when any communication
happens to the EDBG.
Bootloader Mode (idle) The power LED and the status LED blink simultaneously.
Bootloader Mode (firmware
upgrade)
The power LED and the status LED blink in an alternating pattern.
Xplained Pro
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For further documentation on the EDBG, refer to the Microchip EDBG User Guide.
3.2 Xplained Pro Analog Module
3.2.1 Overview
The Xplained Pro Analog Module (XAM) extends the embedded debugger with high dynamic range
current measurement, and this enables the power profiling of the target system.
Figure 3-1. Xplained Pro Analog Module (XAM)
The XAM consists of these following key features:
• Calibration circuitry
• Voltage reference
• Analog frontend
– Shunt resistors with a range selection switch
– Pre-amplifier
– Two active filters with gain
• Control MCU
– Analog-to-Digital Converter (ADC)
– Signal processing
– Control/communication interface to the EDBG
The current measurement frontend is a high-side shunt measurement with a pre-amplifier, and a second
active filter stage with gain. The wide dynamic range is achieved by four measurement ranges which are
defined by two shunts, and the two parallel second stage active filters with gain.
3.2.2 EDBG Interface
The Xplained Pro Analog Module (XAM) is connected to the EDBG with the following interfaces:
Xplained Pro
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• I2C: This is used to control and configure the XAM.
• SPI: Current measurement data is streamed to the EDBG through this interface. This is a one-way
data transfer channel from the XAM to the EDBG.
• SWD: The MCU in the XAM is programmed through SWD from the EDBG.
• GPIO: At least one GPIO, that is connected to the EDBG from the target MCU, is also connected to
the current measurement unit to enable the user to sync current measurements with their
application.
• Clock sync: Synchronization signal to synchronize ADC measurements with EDBG.
3.2.3 Sample Rate
The raw sampling rate of the Xplained Pro analog module (XAM) is up to 250 kHz and with the default
averaging configuration (average of 16 samples). The actual output of the XAM is 16.67 kSPS, and the
XAM output sample rate is not an integer fraction of the raw sampling.
3.2.4 Measurement Ranges and Accuracy
The Xplained Pro analog module has four measurement ranges. These are defined by two shunt
resistors and two gain stages.
Table 3-2. Xplained Pro Analog Module Measurement Ranges and Accuracy
Measurement
Range
Hardware Resolution Accuracy Comments
Range 1 Low-current shunt and
high-gain stage
20 nA 1 LSB ±1% Below 1 µA the error will
increase. Typical error for 300
nA is 1 LSB ±10%
Range 2 Low-current shunt and
low-gain stage
150 nA 1 LSB ±1% -
Range 3 High-current shunt and
high-gain stage
10 μA 1 LSB ±1% -
Range 4 High current shunt and
low gain stage
100 μA 1 LSB ±1% Above 100 mA the error will
increase to 1 LSB ±5% at 400
mA. Maximum current is 400
mA
The ranges are switched automatically by the XAM to achieve best measurement results and the current
active range is visualized in the Microchip Data Visualizer frontend tool. The maximum voltage drop over
the shunt resistor is 100 mV, and the XAM will switch the range automatically before this limit is reached.
3.3 Hardware Identification System
All Xplained Pro compatible extension boards have one Microchip ATSHA204 CryptoAuthentication™
chip. This chip contains information that identifies the extension with its name and some extra data.
When Xplained Pro extension is connected to the Xplained Pro MCU board, the information is read and
sent to Atmel Studio.
The Microchip Kits extension, installed with Atmel Studio, will give relevant information, code examples,
and links to relevant documents.
The following table provides the data fields stored in the ID chip with example content.
Xplained Pro
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Table 3-3. Xplained Pro ID Chip Content
Data Field Data Type Example Content
Manufacturer ASCII string Atmel’\0’
Product Name ASCII string Segment LCD1 Xplained Pro’\0’
Product Revision ASCII string 02’\0’
Product Serial Number ASCII string 1774020200000010’\0’
Minimum Voltage [mV] uint16_t 3000
Maximum Voltage [mV] uint16_t 3600
Maximum Current [mA] uint16_t 30
3.4 Power Sources
The SAM L10/SAM L11 Xplained Pro kits can be powered by several power sources as listed in the
following table.
Table 3-4. Power Sources for SAM L10/SAM L11 Xplained Pro
Power Input Voltage Requirements Current Requirements Connector
Marking
External Power 4.3V to 5.5V . Recommended maximum is 2A due
to the input protection maximum
current specification.
PWR
Embedded
Debugger
4.4V to 5.25V (according to
USB specifications).
500 mA (according to USB
specifications)
DEBUG USB
The kit will automatically detect the available power sources and choose which one to use according to
the following priority:
• External power
• Embedded debugger USB
Note: External power is required when 500 mA from a USB connector is not sufficient to power the
board with possible extension boards.
3.5 Xplained Pro Headers and Connectors
3.5.1 Xplained Pro Standard Extension Header
All Xplained Pro kits have many dual row, 20-pin, 100 mil extension headers. The Xplained Pro MCU
boards have male headers, while Xplained Pro extensions have their female counterparts. All pins are not
always connected, and the connected pins follow the defined pin-out descriptions given in the following
table.
The extension headers can be used to connect a variety of Xplained Pro extensions to Xplained Pro MCU
boards, or to access the pins of the target MCU on Xplained Pro MCU boards directly.
Xplained Pro
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Table 3-5. Xplained Pro Standard Extension Header
Pin Number Name Description
1 ID_EXTx Communication line to the ID chip on an extension board EXTx
2 GND Ground
3 ADC(+) Analog-to-Digital Converter (ADC) alternatively positive part of
differential ADC
4 ADC(-) ADC alternatively negative part of differential ADC
5 GPIO General purpose I/O
6 GPIO General purpose I/O
7 PWM(+) Pulse Width (PWM) alternatively positive part of differential PWM
8 PWM(-) PWM alternatively negative part of differential PWM
9 IRQ/GPIO Interrupt Request Line and/or general purpose I/O
10 SPI_SS_B/GPIO Slave Select for SPI and/or general purpose I/O
11 TWI_SDA Data line for I²C interface
12 TWI_SCL Clock line for I²C interface
13 UART_RX Receiver line of target device UART
14 UART_TX Transmitter line of target device UART
15 SPI_SS_A Slave Select for SPI. Should preferably be unique.
16 SPI_MOSI Master out slave in line of serial peripheral interface
17 SPI_MISO Master in slave out line of serial peripheral interface
18 SPI_SCK Clock for SPI. Always implemented, bus type.
19 GND Ground
20 VCC Power for extension board
3.5.2 Xplained Pro Power Header
The power header (PWR) can be used to connect external power to the SAM L10/SAM L11 Xplained Pro
kit. The kit will automatically detect and switch to any external power if supplied. The power header can
also be used as a supply for external peripherals or extension boards. Care must be taken not to exceed
the total current limitation of the on-board regulator when using the 3.3V pin.
Table 3-6. Xplained Pro Power Header (PWR)
Pin Number Pin Name Description Connector Marking
1 VCC_EXT_P5V0 External 5V input 5.0V IN
2 GND Ground GND
Xplained Pro
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