Microchip Technology SAM L10 Xplained Pro Manuel utilisateur

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.

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

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

Figure 1-1. SAM L10 Xplained Pro Evaluation Kit Overview

Introduction

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

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

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

• 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

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

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

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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