Microchip Technology SAM B11ZR Xplained Pro Manuale utente

ATSAMB11ZR

SAM B11ZR Xplained Pro User Guide

Description

Microchip's SAM B11ZR Xplained Pro evaluation kit is a hardware platform used to evaluate the

ATSAMB11ZR-210CA module.

Supported by the Atmel Studio integrated development platform, the kit provides easy access to the

features of the ATSAMB11ZR and explains how to integrate the device in a custom design.

The Xplained Pro MCU series evaluation kits include an on-board Embedded Debugger, and no external

tools are necessary to program or debug the ATSAMB11ZR.

The Xplained Pro extension kits offer additional peripherals to extend the features of the board and ease

the development of custom designs.

Table of Contents

Description.......................................................................................................................1

1. Introduction................................................................................................................3

1.1. Feature list....................................................................................................................................3

1.2. Kit Overview................................................................................................................................. 3

2. Xplained Pro Getting Started.....................................................................................5

2.1. Xplained Pro Quick Start.............................................................................................................. 5

2.2. Design Documentation and Relevant Links................................................................................. 5

3. Xplained Pro.............................................................................................................. 6

3.1. Xplained Pro.................................................................................................................................6

3.2. Embedded Debugger................................................................................................................... 6

3.3. Xplained Pro Analog Module........................................................................................................7

3.4. Hardware Identification System....................................................................................................8

3.5. Power Sources............................................................................................................................. 9

3.6. Xplained Pro Headers and Connectors......................................................................................10

4. Hardware User Guide..............................................................................................12

4.1. Connectors.................................................................................................................................12

4.2. Peripherals................................................................................................................................. 15

4.3. Embedded Debugger Implementation........................................................................................17

5. Hardware Revision History...................................................................................... 20

5.1. Identifying Product ID and Revision........................................................................................... 20

5.2. Hardware Revision..................................................................................................................... 20

6. Document Revision History..................................................................................... 21

The Microchip Web Site................................................................................................ 22

Customer Change Notification Service..........................................................................22

Customer Support......................................................................................................... 22

Product Identification System........................................................................................23

Microchip Devices Code Protection Feature................................................................. 23

Legal Notice...................................................................................................................24

Trademarks................................................................................................................... 24

Quality Management System Certified by DNV.............................................................25

Worldwide Sales and Service........................................................................................26

ATSAMB11ZR

1. Introduction

1.1 Feature list

• ATSAMB11ZR-210CA module

• Bluetooth® host and Device mode

• One mechanical reset button

• One mechanical programmable button

• One user LED (yellow)

• Battery header (1x2 100mil header)

• 32.768 kHz crystal

• Two Xplained Pro extension headers

• Embedded Debugger

– Auto-ID for board identification in Atmel Studio

– One status LED (yellow)

– One power LED (green)

– Symbolic debug of complex data types including scope information

– Programming and debugging, including power measurements

– Data Gateway Interface (DGI): SPI, I2C, four GPIOs

– Virtual COM port (CDC)

• Embedded current measurement circuitry with support for data visualization

• USB-powered

• Supported with application examples in Atmel Software Framework

1.2 Kit Overview

The SAM B11ZR Xplained Pro evaluation kit is a hardware platform used to evaluate the

ATSAMB11ZR-210CA module.

The kit offers a set of features that enable the user to get started with the ATSAMB11ZR-210CA module

peripherals right away, and to understand how to integrate the device in their own design.

ATSAMB11ZR

2. Xplained Pro Getting Started

2.1 Xplained Pro Quick Start

Steps to start exploring the Xplained Pro platform:

1. Download and install Atmel Studio.

2. Launch Atmel Studio.

3. Connect the Debug USB port on the evaluation 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

installs the driver software automatically. This driver supports 32-bit and 64-bit versions of Microsoft®

Windows® XP, Windows Vista®, Windows 7, Windows 8, Windows 10, and Windows Server 2012.

When the Xplained Pro MCU board is powered, the power LED (green) glows and the Atmel Studio

automatically detects the specific Xplained Pro MCU and extension board(s) that are connected. The

landing page of the kit in the Atmel Studio has an option to launch the Atmel Software Framework (ASF)

and the Atmel START example application codes for the kit. The SAM B device is programmed and

debugged by the on-board embedded debugger and therefore no external programmer or debugger tool

is required.

2.2 Design Documentation and Relevant Links

The following list contains links to the most relevant documents and software for the SAM B11ZR

Xplained Pro.

•Xplained products - Xplained evaluation kits are a series of easy-to-use evaluation kits for

microcontrollers and other products. For low pin count devices, the Xplained Nano series provides

a minimalistic solution with access to all I/O pins of the target microcontroller. Xplained Mini kits are

for medium pin count devices and adds Arduino Uno compatible header footprint and a prototyping

area. Xplained Pro kits are for medium to high pin count devices, and feature advanced debugging

and standardized extensions for peripheral functions. All these kits have on board programmers/

debuggers which creates a set of low-cost boards for evaluation and demonstration of features and

capabilities of different products.

•Atmel Studio - Atmel Studio presents Free Atmel IDE for development of C/C++ and assembler

code for microcontrollers and relevant documentation.

•Microchip sample store - Microchip sample store where you can order samples of devices.

•EDBG User Guide - User guide containing more information about the on-board Embedded

Debugger.

•IAR Embedded Workbench ® for ARM ® - This is a commercial C/C++ compiler that is available for

ARM . There is a 30-day evaluation version as well as a code size limited kick-start version

available from their website. The code size limit is 16KB for devices with M0, M0+, and M1 cores

and 32KB for devices with other cores.

•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.

•SAM B11ZR Xplained Pro BluSDK - Software, firmware, applications, and tools packages.

ATSAMB11ZR

3. Xplained Pro

3.1 Xplained Pro

Xplained Pro is an evaluation platform which contains a series of microcontroller boards (evaluation kits)

and extension boards. Atmel Studio is used to program and debug the microcontrollers on these boards.

Atmel Studio includes Advanced Software Framework (ASF) and Atmel START, which has drivers and

demo code, and Data Visualizer, which supports data streaming and advanced debugging. Xplained Pro

evaluation kits can be connected to a wide range of Xplained Pro extension boards through standardized

headers and connectors. Xplained Pro extension boards have identification (ID) chips to uniquely identify

which boards are connected to the Xplained Pro evaluation kits.

3.2 Embedded Debugger

The SAM B11ZR Xplained Pro contains an Embedded Debugger (EDBG) for on-board debugging. The

EDBG is a USB composite device with the following interfaces:

• Debugger

• Virtual COM Port

• Data Gateway Interface (DGI)

The EDBG can program and debug the ATSAMB11ZR with the help of Atmel Studio. The SWD interface

is connected between the EDBG and the ATSAMB11ZR on the SAM B11ZR Xplained Pro.

The Virtual COM Port is connected to a UART on the ATSAMB11ZR and provides an easy way to

communicate with the target application through terminal software. It offers variable baud rate, parity, and

stop bit settings. The settings on the ATSAMB11ZR must match the settings given in the terminal

software.

Info: 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 ATSAMB11ZR. If the

DTR signal is not enabled, the UART pins on the EDBG are kept in tri-state (high-z) to render

the COM Port not usable. The DTR signal is automatically set by some terminal software, but it

may have to be manually enabled in your terminal.

The DGI consists of several physical interfaces for bidirectional communication with the host computer.

Communication over the interfaces is bidirectional. It can be used to send event values, and data from

the ATSAMB11ZR. Traffic over the interfaces can be timestamped by the EDBG for more accurate tracing

of events, but timestamping reduces the maximal data throughput. The Data Visualizer is used to send

and receive data through DGI.

The EDBG controls two LEDs on the SAM B11ZR Xplained Pro, a power LED and a status LED. The

following table provides details on how the LEDs are controlled in different operation modes.

ATSAMB11ZR

Table 3-1. EDBG LED Control

Mode Power LED Status LED

Normal mode The power LED is ON when

power is applied to the board.

Activity indicator, the 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.

For additional information on the EDBG, see the EDBG User Guide.

3.3 Xplained Pro Analog Module

3.3.1 Overview

The Xplained Pro Analog Module (XAM) extends the embedded debugger with high dynamic range

current measurement. This enables power profiling of the target system.

Figure 3-1. XAM Block Diagram

ADC0

ADC1

20x

voltage

reference

2.7V

Control MCU

GND

S&H

ADC

Calibration

circuitry

Calibration ON/OFF

AREF

GPIO

GPIO(s)

GPIO

100 mOhm

100 Ohm

EDBG

SPI

Clock sync

SWD

Sync GPIO

I2C

16x

Current input

Current output

Range selection

Pre-amplifier

Active filter with

gain

Xplained Pro Analog Module (XAM)

20x

The XAM consists of:

• Calibration circuitry

• Voltage reference circuitry

• Analog front-end:

– Shunt resistors with a range selection switch

– Pre-amplifier

– Two active filters with gain

• Control MCU

ATSAMB11ZR

– Analog-to-Digital Converter

– Signal processing

– Control/communication interface to the EDBG

The current measurement front-end is a high side shunt measurement with a pre-amplifier and a second

active filter stage with gain as shown in Figure 3-1. The wide dynamic range is achieved by four

measurement ranges, which are defined by two shunt resistors and the two parallel second stage active

filters with gain.

3.3.2 Sample Rate

The raw sampling rate of the 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.

Info: The XAM output sample rate is not an integer fraction of the raw sampling.

3.3.3 Measurement Ranges and Accuracy

The XAM has four measurement ranges. These are defined by two shunt resistors and two gain stages.

Table 3-2. XAM Measurement Ranges and Accuracy

Measurement

Range

Hardware Resolution Accuracy Comments

Range 1 Low current shunt and

high gain stage

20 nA 1 LSB ±1% Accuracy will decrease below

1 μA. Typical accuracy 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% Accuracy will decrease above

100 mA. Typical accuracy is

1 LSB ±5% at 400 mA.

Maximum current is 400 mA.

The ranges are automatically switched by the XAM to achieve the best measurement results and the

currently active range is visualized in the Data Visualizer front-end tool. The maximum voltage drop over

the shunt resistor is 100 mV, and the XAM switches the range automatically before reaching this limit.

3.4 Hardware Identification System

All Xplained Pro extension boards come with an identification chip (ATSHA204A CryptoAuthentication™

chip) to uniquely identify the boards that are connected to the Xplained Pro evaluation kit. This chip

contains information that identifies the extension with its name and some extra data. When an Xplained

Pro extension is connected to an Xplained Pro evaluation kit, the information is read and sent to the

Atmel Studio. The following table shows the data fields stored in the ID chip with example content.

ATSAMB11ZR

Table 3-3. Xplained Pro ID Chip Content

Data Field Data Type Example Content

Manufacturer ASCII string Microchip'\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

3.5 Power Sources

The SAM B11ZR Xplained Pro kit can be powered by several power sources as listed in the table below.

Table 3-4. Power Sources for SAM B11ZR Xplained Pro

Power input Voltage requirements Current requirements Connector marking

External power 5V ±2% (±100 mV) for

USB host operation.

4.3V to 5.5V if USB host

operation is not

required.

Recommended

minimum is 1A to be

able to provide enough

current for connected

USB devices and the

board itself.

Recommended

maximum is 2A due to

the input protection

maximum current

specification.

PWR

Embedded debugger

USB

4.4V to 5.25V (according

to USB spec.)

500 mA (according to

USB spec.)

DEBUG USB

Battery header is another power input, refer to Battery Header.

The kit will automatically detect which power sources are available and choose which one to use

according to the following priority:

1. External power.

2. Embedded Debugger USB.

Note: The selection for the supply of the Target MCU has a separate connector. The above priority

selects which supply is used to power the EDBG and the VCC_P3V3_CON.

Info: External power is required when 500mA from a USB connector is not enough to power

the board with possible extension boards. A connected USB device in a USB host application

might easily exceed this limit.

ATSAMB11ZR

3.6 Xplained Pro Headers and Connectors

3.6.1 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 the Xplained Pro extensions have their female counterparts. All

connected pins follow the defined pin description in the table.

Info: Not all pins are always connected on all extension headers.

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 microcontroller on the Xplained Pro boards.

Table 3-5. Xplained Pro Standard Extension Header

Pin Number Pin Name Description

1 ID Pin to communicate with the ID chip on an extension board.

2 GND Ground

3 ADC(+) Analog-to-Digital Converter; alternatively, a pin for the positive

terminal of a differential ADC.

4 ADC(-) Analog-to-Digital Converter; alternatively, a pin for the negative

terminal of a differential ADC.

5 GPIO1 General purpose I/O pin.

6 GPIO2 General purpose I/O pin.

7 PWM(+) Pulse width modulation; alternatively, a pin for the positive part of a

differential PWM.

8 PWM(-) Pulse width modulation; alternatively, a pin for the negative part of a

differential PWM.

9 IRQ/GPIO Interrupt request pin and/or general purpose I/O pin.

10 SPI_SS_B/

GPIO

Slave select pin for Serial Peripheral Interface (SPI) and/or general

purpose I/O pin.

11 I2C_SDA Data pin for I2C interface. Always connected, bus type.

12 I2C_SCL Clock pin for I2C interface. Always connected, bus type.

13 UART_RX Receiver pin of target device UART.

14 UART_TX Transmitter pin of target device UART.

15 SPI_SS_A Slave select for SPI. This pin should preferably not be connected to

anything else.

16 SPI_MOSI SPI master out slave in pin. Always connected, bus type.

17 SPI_MISO SPI master in slave out pin. Always connected, bus type.

ATSAMB11ZR

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