Microchip SAM E70 User Manual

SAM E70 Xplained Ultra User's Guide

Introduction

This user’s guide provides detailed information about the SAM E70 Xplained Ultra Evaluation kit and its various features. Figure below illustrates the SAM E70 Xplained Ultra Evaluation kit.

Figure 1. SAM E70 Xplained Ultra Evaluation Kit with PHY Daughter Board

Features

• ATSAME70Q21 Microcontroller

• One Mechanical Reset Button

• One Mechanical User Push Button

• Two User LEDs

• 12.0 MHz Oscillator (DSC6003)

• 32.768 kHz Oscillator (DSC6083)

• 2-MB SDRAM

• 4-MB QSPI Flash (SST26VF032BA)

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• Ethernet Interface with External IEEE 802.3az 10Base-T/100Base-TX Ethernet RMII PHY on a Daughter Board

• AT24MAC402 256KB EEPROM with EUI-48 Address

• ATA6561 CAN Transceiver

• Micro SD Card Connector with SDIO Support

• Camera Interface Connector

• Two Xplained Pro Extension Headers

• Graphics Card Interface

• CoreSight® 20 Connector for 4-bit ETM

• Arduino MEGA Shield Connector

• External Debugger Connector

• USB Interface, Device and Host Mode

• Embedded Debugger:

– Programming and debugging through USB interface – Auto-ID for board identification in Atmel Studio and MPLAB® X – One yellow status LED – One green board power LED – Symbolic debug of complex data types including scope information – Data Gateway Interface: SPI, I2C, four GPIOs – Virtual COM port (CDC)

• External Power Input (5-14V) or USB Power

• X32 Daughter Board Interface to Support Audio and Bluetooth

• One mikroBus™ Interface

Kit Overview

The Microchip PIC32 SAM E70 Xplained Ultra Development Kit (DM320113) provides a modular development system for Microchip’s line of 32-bit Cortex® microcontrollers.

For a free Microchip demonstration code and additional information, visit the MPLAB Harmony™ web page at: http://www.microchip.com/MPLABHarmony.

The Atmel SAM E70 Xplained Ultra Dvelopment Kit is a hardware platform to evaluate the Microchip ATSAME70Q21. The kit offers a set of features that enables the ATSAME70Q21 users to start with the SAM E70 peripherals and understand how to integrate the device in their design.

The SAM E70 Xlpained Ultra kit contains the following items:

• One SAM E70 Xplained Ultra Development Kit

• One KSZ8061 Ethernet PHY

• One Graphics card set up for 565 (16-bit color) graphics

Note: If any items are missing in the kit, contact Microchip sales office for assistance. A list of Microchip Sales offices is provided on the last page of this document.

The figure below illustrates the SAM E70 Xplained Ultra Evaluation Kit features.

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Figure 2. SAM E70 Xplained Ultra Evaluation Kit

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The table below provides the SAM E70 Xplained Ultra Evaluation kit feature descriptions.

Table 1. SAM E70 Xplained Ultra Evaluation Kit Feature and Location

Number Description

1 CAN interface

2 X32 Daughter Board interface

3 Mikro interface

4 Ethernet PHY interface

5 Ethernet Clock enable/disable jumper

1. Shorted = disabled

2. Open = enabled

6 EXT1/EXT2 interface

7 Debugger USB

1. Programming

2. Power

3. DGI

8 External Reset Button

9 User Button

10 MCU current measurement jumper

11 SAM E70 Host/Device USB

12 CoreSite® 20 (SWD + ETM) debugging interface

13 Barrel power input (2.1mm)

14 User defined LEDs

15 LED2/USB detect jumper

16 Image Sensor interface

17 SWD debugger interface

18 Graphics card interface

19 ATSAME70Q21B

20 SQI external Flash memory

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Introduction......................................................................................................................1

1. Getting Started.......................................................................................................... 6

2. Xplained Ultra............................................................................................................8

3. Embedded Debugger................................................................................................ 9

3.1. Hardware Identification System....................................................................................................9

4. System Level Block Diagram...................................................................................11

5. Hardware Features..................................................................................................12

5.1. Xplained Pro Standard Extension Header..................................................................................12

5.2. Graphics Connectors or GFX Card Interface............................................................................. 13

5.3. SDRAM and LCD Connections.................................................................................................. 16

5.4. Camera Connector.....................................................................................................................18

5.5. USB Connectivity....................................................................................................................... 19

5.6. Chip Erase Header.....................................................................................................................20

5.7. Audio Connectivity......................................................................................................................20

5.8. mikroBUS™ Header................................................................................................................... 22

5.9. CAN............................................................................................................................................22

5.10. Ethernet......................................................................................................................................23

5.11. Debug USB Connectivity............................................................................................................24

5.12. Switches.....................................................................................................................................24

5.13. AT24MAC402 Serial EEPROM.................................................................................................. 25

5.14. Power Sources...........................................................................................................................26

6. Hardware.................................................................................................................28

6.1. SAM E70 Xplained Ultra Development Board Schematics........................................................ 28

6.2. Bill of Materials...........................................................................................................................50

The Microchip Web Site................................................................................................ 55

Customer Change Notification Service..........................................................................55

Customer Support......................................................................................................... 55

Microchip Devices Code Protection Feature................................................................. 55

Legal Notice...................................................................................................................56

Trademarks................................................................................................................... 56

Quality Management System Certified by DNV.............................................................57

Worldwide Sales and Service........................................................................................58

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1. Getting Started

SAM E70 Xplained Ultra Evaluation Quick Start

Follow these steps to explore the Atmel SAM E70 Xplained Ultra evaluation kit:

1. Download and install MPLAB X.

2. Launch MPLAB X.

3. Install MPLAB Harmony 3™.

Getting Started

When Microchip SAM E70 Xplained Ultra is connected to the computer for the first time, the operating system will install a driver software. The driver file supports both 32-bit and 64-bit versions of Microsoft Windows® XP/ Vista /7/8/10.

Once the kit is powered, the green power LED will be lit and MPLAB X will auto-detect the kit and identify which Xplained Pro extension boards are connected. MPLAB X will provide relevant information like data sheets and kit documentation. The SAM E70 device is programmed and debugged by the on-board Embedded Debugger, hence no external programmer or debugger tool is needed.

Design Documentation and Relevant Links

The following list provides links to the relevant documents and software for the SAM E70 Xplained Ultra.

• Xplained Pro products

– Atmel Xplained Pro is a series of small-sized and easy-to-use evaluation kit for Microchip

microcontrollers and other Microchip products. It consists of a series of low-cost MCU boards for evaluation and demonstration of features and capabilities of different MCU families.

• Microchip MPLAB® Integrated Development Environment

– A free Microchip MPLAB IDE for development of C/C++ and assembler code for Microchip

microcontrollers.

• MPLAB Harmony

– A free MPLAB Harmony code base is available for user application. The latest MPLAB Harmony

code is available for download at:http://www.microchip.com/MPLABHarmony.

• EDBG User Guide

– This user’s guide provides additional information about the on-board Embedded Debugger.

• Data Visualizer

– Data Visualizer is a program used for processing and visualizing data. The Data Visualizer can

receive data from various sources, such as the Embedded Debugger Data Gateway Interface that is found on the Xplained Pro boards and COM ports.

• IAR Embedded Workbench® for ARM

– A commercial C/C++ compiler that is available for ARM. A 30-day evaluation version and a code

size limited kick-start version are also available for download from their web site. The code size limit is 16-KB for devices with M0, M0+, M1 cores, and 32-KB for devices with other cores.

• Keil MDK-ARM Microcontroller Development Kit

– The MDK-ARM is a complete software development environment for Cortex®-M, Cortex-R4,

ARM7™, and ARM9™ processor-based devices. The MDK-ARM is specifically designed for microcontroller applications, it is user friendly yet powerful enough for the most demanding embedded applications.

• Design Documentation

™

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Getting Started

– Package containing schematics, BOM, assembly drawings, 3D plots, layer plots, and so on.

• Hardware Users Guide

– PDF version of this user guide.

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2. Xplained Ultra

The SAM E70 Xplained Ultra implements several Xplained Pro standards like extension headers and connectors. Xplained Pro is an evaluation platform that provides a full Microchip microcontroller experience. The platform consists of a series of Microcontroller (MCU) boards and extension boards that are integrated with the Microchip MPLAB IDE that supports data streaming. The Xplained Pro MCU boards support a wide range of Xplained Pro extension boards, such as audio DACs/CODECs, Ethernet PHYs, graphics cards, and mikroBUS™ that 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 a Xplained Pro MCU board. This information is used to present relevant user guides, application notes, data sheets, and example code through MPLAB X.

Xplained Ultra

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3. Embedded Debugger

The SAM E70 Xplained Ultra contains Microchip Embedded Debugger (EDBG) for on-board debugging. The EDBG is a composite USB device, which is based on the following interfaces:

• Debugger

• Virtual COM Port

• Data Gateway Interface (DGI)

Together with the Microchip MPLAB IDE, the EDBG debugger interface can program and debug the ATSAME70Q21. On the SAM E70 Xplained Ultra, the SWD interface is connected between the EDBG and the ATSAME70Q21.

The Virtual COM Port is connected to a UART on the ATSAME70Q21 and provides an easy way to communicate with the target application through the terminal software. It offers variable baud rate, parity, and Stop bit settings. The settings on the ATSAME70Q21 must match the settings given in the terminal software.

Note: If not set automatically, Data Terminal Ready (DTR) must be set in the terminal software.

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 ATSAME70Q21, or as a generic printf-style data channel. Traffic over the interfaces can be timestamped on the EDBG for accurate tracing of events. Note that timestamping imposes an overhead that reduces maximal throughput. The Data Visualizer is used to send and receive data through DGI.

Embedded Debugger

The EDBG controls two LEDs on SAM E70 Xplained Ultra: a power LED and a status LED.

The following table describes how the LEDs are controlled in different operation modes.

Table 3-1. EDBG LED Control

Operation Mode Power LED Status LED

Normal operation The power LED is lit when power is

applied to the board.

Bootloader mode (idle)

Bootloader mode (firmware upgrade)

For additional information on EDBG, refer to the EDBG User Guide.

The power LED and the status LED blinks simultaneously.

The power LED and the status LED blinks in an alternating pattern.

3.1 Hardware Identification System

All Xplained Pro-compatible extension boards have an Microchip ATSHA204 CryptoAuthentication™ chip mounted. This chip contains information that identifies the extension with its name and data. When an Xplained Pro extension is connected to an Xplained Pro MCU board, the information is read and sent to the MPLAB X IDE. The Microchip kits extension, installed with MPLAB X, provides relevant information, such as code examples, and links to relevant documents. The following table provides the data fields stored in the ID chip with content examples.

Activity indicator, LED flashes when any communication happens to the EDBG.

The power LED and the status LED blinks simultaneously.

The power LED and the status LED blinks in an alternating pattern.

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Embedded Debugger

Table 3-2. Xplained Pro ID Chip Content Example

Data Field Data Type Example

Manufacture ASCII string Microchip’\0’

Product Name ASCII string

Product Revision ASCII string 04’\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

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4. System Level Block Diagram

The following figure illustrates the high-level signal block diagram of the SAM E70 Xplained Ultra Development Kit.

Figure 4-1. Signal Level Block Diagram

System Level Block Diagram

Wire buses that are tied together are connected together. In this system the SPI bus data and clock are shared across several interfaces. The SPI Slave selects are addressed individually with GPIO.

System I2C uses I2C0 and connects to the debugger, EXT1, EXT2, and mikroBus/X32. Touch I2C uses I2C2 and only goes from the microcontroller to the graphics connector.

The debugger has the following interfaces connected: DGI SPI, DGI I2C, DGI UART, and SWD.

UART wires from the microcontroller to the blocks are not shared with each other.

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5. Hardware Features

5.1 Xplained Pro Standard Extension Header

All Xplained Ultra Kits have many dual row, 20-pin, 100 mil extension headers. Xplained Ultra MCU boards have male headers, while Xplained Ultra extensions have their female counterparts as shown in the image below.

Note: All pins are not always connected.

The extension headers can be used to connect a variety of Xplained Pro extensions to Xplained Ultra MCU boards or to access the pins of the target MCU on Xplained Ultra MCU boards directly.

Figure 5-1. Extension Headers

Hardware Features

All connected pins follow the defined pinout description as shown in the following table.

Table 5-1. Xplained Pro Standard Extension Header

Pin number Name Description

1 ID Communication line to the ID chip on an extension board

2 GND Ground

3 ADC(+) Analog-to-Digital Converter, alternatively positive part of differential ADC

4 ADC(-) Analog-to-Digital Converter, alternatively negative part of differential ADC

5 GPIO1 General purpose I/O

6 GPIO2 General purpose I/O

7 PWM(+) Pulse-Width Modulation, alternatively positive part of differential PWM

8 PWM(-) Pulse-Width Modulation, alternatively negative part of differential PWM

9 IRQ/INT/GPIO Interrupt request line and general purpose I/O

10 SPI SS B/GPIO SPI Slave Select or general purpose I/O

11 I2C SDA Data line for I2C interface. Always implemented, bus type

12 I2C SCL Clock line for I2C interface. Always implemented, bus type

13 UART RX Receiver line of target device UART

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Hardware Features

...........continued

Pin number Name Description

14 UART TX Transmitter line of target device UART

15 SPI SS A/GPIO SPI Slave Select or general purpose I/O

16 SPI MOSI Master Out Slave In line of serial peripheral interface. Always

implemented, bus type.

17 SPI MISO Master In Slave Out line of serial peripheral interface. Always

implemented, bus type.

18 SPI SCK Clock for serial peripheral interface. Always implemented, bus type.

19 GND Ground

20 V

Power for extension boards (3.3V)

5.2 Graphics Connectors or GFX Card Interface

The SAM E70 Xplained Ultra Development Kit is designed to have a modular graphics interface. This interface enables using several graphics cards, which allow for expandability and different use cases. A 565 adapter card is included in the kit, which takes 16-bit parallel LCD data and converts it to 24-bit data. This card also provides access to ADC for resistive touch screens, hence an external controller is not needed. See table below for pin descriptions.

Table 5-2. Graphics Interface Pinout

Pin Number Name Description

1 GND Ground

2 GND Ground

3 MCLR Master Clear, Controlled by the debuggers. Allows for a

complete system reboot.

4 IRQ1 (LCD Touch) Interrupt request line for cap touch device

5 5.0v V

6 IRQ2 (Q Touch) Interrupt request line for Q touch devices

5.0v

7 LCDEN LCD Data Enable

8 IRQ3 (Display Controllers) Interrupt request line for external display controllers

9 LCDHSYNC/NCS3 LCD Horizontal Sync

10 IRQ4 (Resistive touch) Interrupt request line for resistive touch controllers

11 LCDVSYNC/nWE LEC Vertical Sync or Write enable (active-low)

12 5.0v V

13 LCDPCK/nRD LCD pixel Clock or Read Enable (active-low)

14 I2C SDA Data line for I2C interface. Always implemented, bus type.

+5.0v

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Hardware Features

...........continued

Pin Number Name Description

15 LCD D0 LCD Data bit 0

16 I2C SCL Clock line for I2C interface. Always implemented, bus type.

17 LCD D1 LCD Data bit 1

18 SPI SCK Clock for serial peripheral interface. Always implemented, bus

type.

19 LCD D2 LCD Data bit 2

20 SPI MOSI Master Out Slave In line of serial peripheral interface.

21 LCD D3 LCD Data bit 3

22 SPI MISO Master In Slave Out line of serial peripheral interface.

23 LCD D4 LCD Data bit 4

24 SPI SS SPI Slave Select

25 LCD D5 LCD Data bit 5

26 UART RX Receiver line of target device UART

27 LCD D6 LCD Data bit 6

28 UART TX Transmitter line of target device UART. (from MCU to GFX

card)

29 LCD D7 LCD Data bit 7

30 UART RTS UART Ready To Send (from MCU to GFX card)

31 LCD D8 LCD Data bit 8

32 UART CTS UART Clear To Send (from MCU to GFX card)

33 LCD D9 LCD Data bit 9

34 LCD PWM LCD PWM back light control

35 LCD D10 LCD Data bit 10

36 PWM2 Pulse-Width Modulation,

37 LCD D11 LCD Data bit 11

38 GPIO1 General purpose I/O

39 LCD D12 LCD Data bit 12

40 GPIO2 General purpose I/O

41 LCD D13 LCD Data bit 13

42 GPIO3 General purpose I/O

43 LCD D14 LCD Data bit 14

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Hardware Features

...........continued

Pin Number Name Description

44 STBY/RST/GPIO4 Standby/Reset or general purpose I/O. For resetting devices

attached to the GFX connector.

45 LCD D15 LCD Data bit 15

46 STBY/RST/GPIO5 Standby2/Reset2 or general purpose I/O

47 LCD D16 LCD Data bit 16 (Not Implemented on this design)

48 ID pin Communication line to the ID chip on an extension board

49 LCD D17 LCD Data bit 17 (Not Implemented on this design)

50 ADC 0 Analog-to-Digital Converter to MCU

51 LCD D18 LCD Data bit 18 (Not Implemented on this design)

52 ADC1 Analog-to-Digital Converter to MCU

53 LCD D19 LCD Data bit 19 (Not Implemented on this design)

54 ADC2 Analog-to-Digital Converter to MCU

55 LCD D20 LCD Data bit 20 (Not Implemented on this design)

56 ADC3 Analog-to-Digital Converter to MCU

57 LCD D21 LCD Data bit 21 (Not Implemented on this design)

58 ADC4 Analog-to-Digital Converter to MCU

59 LCD D22 LCD Data bit 22

60 ADC5 Analog-to-Digital Converter to MCU

61 LCD D23 LCD Data bit 23

62 ADC6 Analog-to-Digital Converter to MCU

63 3.3V V

+3.3V V

64 ADC7 Analog-to-Digital Converter to MCU

65 GND Ground

66 3.3V V

+3.3V V

67 GND Ground

68 GND TAB Mounting Tab

69 GND TAB Mounting Tab

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5.3 SDRAM and LCD Connections

The external bus interface (EBI) on SAM E71 Xplaned Ultra is controlled by the static memory controller (SMC) and SDRAM controllers modules in the ATSAME70Q21B.

ATSAME70Q21B has on-die series termination on very I/O pin as shown in figure below.

Figure 5-2. On-Die Termination

Hardware Features

The EBI is connected to the on-board SDRAM and the Xplained Pro Graphics connector. The following figure shows how the SDRAM and LCD share the same sets of data pins, and displays the location of the series termination resistors.

Figure 5-3. LCD and SDRAM

As the I/O pins have on-die series termination, the impedance of the drivers must be matched to the impedance of the EBI tracks on the PCB using series resistors. The EBI tracks are routed as 50Ω on SAM E70 Xplained Ultra. The clock and address lines are only driven by the ATSAME70Q21B, while the data lines are driven by the ATSAME70Q21B and the on-board SDRAM.

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Hardware Features

Simulation of the transmissions lines using IBIS files for the ATSAME70Q21B and the SDRAM gave the results are shown in the table below.

Table 5-3. EBI Simulation Results

Driving Circuit Signal Type Driver Impedance

(from ibis)

ATSAME70Q21B Data/Address 22Ω 24Ω ≈ 22Ω 50Ω

Clock 21Ω 25Ω ≈ 22Ω 50Ω

SDRAM Data 11Ω 32Ω ≈ 33Ω 50Ω

The routing of the data lines to the LCD connector causes stubs on the data lines at the SDRAM (the stubs are even longer when a cable is plugged in). The 200Ω resistors are placed close to the SDRAM to create a high-impedance path for the signal to the stubs, improving the signal integrity when communicating with the SDRAM.

TIP:

• The series-termination is always placed near to the driving pin.

• The 200Ω resistors are placed close to the intersection between the SDRAM routing and the routing to the LCD connector.

• All designs must be simulated using an IBIS file for the ATSAMV71Q21B and the target peripherals to check whether the signals are within the limits of the devices.

Series Termination

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5.4 Camera Connector

A 2 x 15, 100 mil pin-header camera connector is implemented to provide access to the SAM E70's parallel Image Sensor Interface (ISI).

Table 5-4. Camera Interface Pin Description

Pin Number Name Function

Hardware Features

1 V

2 GND Ground

3 V

4 GND Ground

5 Reset Reset

6 PWD ISI PWD

7 I2C SCK Clock line for I2C interface. Always implemented, bus type.

8 I2C SDA Data line for I2C interface. Always implemented, bus type.

9 GND Ground

10 MCK Master Clock

11 GND Ground

12 VSYNC Image Sensor Vertical Sync

13 GND Ground

14 HSYNC Image Sensor Horizontal Sync

15 GND Ground

+3.3v

16 Pixel Clock Image Sensor Pixel Clock

17 GND Ground

18 ISI D0 Image Sensor Data Bit 0

19 ISI D1 Image Sensor Data Bit 1

20 ISI D2 Image Sensor Data Bit 2

21 ISI D3 Image Sensor Data Bit 3

22 ISI D4 Image Sensor Data Bit 4

23 ISI D5 Image Sensor Data Bit 5

24 ISI D6 Image Sensor Data Bit 6

25 ISI D7 Image Sensor Data Bit 7

26 ISI D8 Image Sensor Data Bit 8

27 ISI D9 Image Sensor Data Bit 9

28 ISI D10 Image Sensor Data Bit 10

DS70005389A-page 18

+ 40 hidden pages

Microchip SAM E70 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

Table of Contents

1. Getting Started

2. Xplained Ultra

3. Embedded Debugger

3.1 Hardware Identification System

4. System Level Block Diagram

5. Hardware Features

5.1 Xplained Pro Standard Extension Header

5.2 Graphics Connectors or GFX Card Interface

5.3 SDRAM and LCD Connections

5.4 Camera Connector