Microchip Technology ATWILC3000 Shield User Manual
Microchip Technology ATWILC3000 Shield is an interface board designed to demonstrate the ATWILC3000-MR110CA, a single-chip IEEE 802.11 b/g/n RF/Baseband/MAC network controller with Bluetooth Low Energy. This low-power module can be connected to the host MCU board using either SDIO or SPI for Wi-Fi, and UART for Bluetooth. The shield features debug I2C and UART headers, an external power supply header, a current measurement header, a power and user LED, a chip antenna, and support for a 32.768 kHz low-power SMD crystal oscillator.
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ATWILC3000
ATWILC3000 Shield User Guide
Introduction
The ATWILC3000 Shield is an interface board designed to demonstrate the ATWILC3000-MR110CA, a single chip IEEE
®
802.11 b/g/n RF/Baseband/MAC network controller with Bluetooth
®
Low Energy. This module is optimized for low-power applications. The ATWILC3000 module can be connected to the host
MCU board using any of the following interfaces:
• For Wi-Fi
®
, either Secure Digital Input/Outputs (SDIO) or Serial Peripheral Interface (SPI) is used.
• For Bluetooth, Universal Asynchronous Receiver/Transmitter (UART) is used.
Figure 1. ATWILC3000 Shield Board
Features
• Debug I 2 C and UART Header Footprints
• External Power Supply Header
• Current Measurement Header
• Power and User LED
• Chip Antenna
• Supports 32.768 kHz Low-Power Surface Mount Device (SMD) Crystal Oscillator
• Arduino Shield Stacking Connector
– Supports Wi-Fi through SDIO by default. Pinout is compatible with ATSAMA5D4-XULT
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 1
ATWILC3000
– Supports Wi-Fi through SPI (optional). Pinout is compatible with Arduino header specification
– Supports Bluetooth through UART
• Raspberry Pi Stacking Connector
– Supports Wi-Fi through SDIO or SPI
– Supports Bluetooth through UART
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 2
Table of Contents
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 3
ATWILC3000
Kit Overview
1. Kit Overview
The ATWILC3000 Shield is a shield board containing the low-power ATWILC3000-MR110CA 802.11 b/g/n
IoT module. By default, the ATWILC3000 Shield is configured to use with the SDIO interface which is compatible with SAMA5D4-XULT.
Figure 1-1. ATWILC3000 Shield Evaluation Kit Overview
ATWILC3000-MR110CA
Module
Raspberry Pi
40-pin Connector
Wi-Fi
UART
Debug
I2C
Current
Measurement
Header
External
Power
Supply
Arduino
Compatible
Headers
Power & Status LED
32 KHz Crystal Oscillator
The ATWILC3000 Shield can also be configured to use with other host MCU boards using SPI peripheral interface exposed through Arduino compatible connectors. For more details, see ATWILC3000 Wiki for the list of supported boards and related documents.
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 4
ATWILC3000
ATWILC3000 Shield Peripheral C...
2. ATWILC3000 Shield Peripheral Configuration
The ATWILC3000 module on the shield board can communicate with the host board using either SDIO or
SPI. By default, SDIO is supported. A resistor combination must be modified to add SPI support. The following table provides resistor configuration details.
Table 2-1. ATWILC3000 Shield Resistor Configuration for SDIO/SPI
Peripheral Interface Required Modification for Resistors
SDIO Mounted resistors: R311, R218, R219, R220, R221
Not mounted resistors: R214, R215, R216, R217, R310
SPI Mounted resistors: R214, R215, R216, R217, R310
Not mounted resistors: R218, R219, R220, R221, R311
Figure 2-1. ATWILC3000 Shield SDIO-SPI Resistors
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 5
ATWILC3000
Design Documentation and Relevant Links
3. Design Documentation and Relevant Links
The following list contains links to the most relevant documents and software available for the
ATWILC3000 Shield.
• Xplained Boards is a series of small-sized and easy-to-use evaluation kits for microcontrollers and other products. It consists of low-cost MCU boards for evaluation and demonstration of features and capabilities of different MCU families.
• Atmel Studio provides a free Atmel IDE for development of C/C++ and assembler code for microcontrollers.
• 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 found on Xplained Pro boards and COM ports.
• ATWILC3000 page provides information and documentation on the Microchip ATWILC3000-
MR110CA module.
• ATWILC3000 Wireless Wiki page is an online directory to access source code and documentation for the ATWILC3000.
• SMART SAMA5 ARM
®
Cortex
®
based MPUs page is an online directory to access the tools and software for SAMA5 Cortex-A5-Based Embedded MPUs.
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 6
ATWILC3000
Hardware Specifications
4. Hardware Specifications
This chapter describes the connectors and header of the ATWILC 3000 Shield board.
4.1 ATWILC3000 Shield Arduino Shield Stacking Connectors
The ATWILC3000 Shield contains Arduino shield stacking connectors, which are used to connect the board to an MCU base board. This is also used to expose the unused pins to the user. The pinout definition for the shield connectors are given in the following tables.
Table 4-1. J200 Stacking Connector
Pin Number
4
5
6
7
8
9
10
1
2
3
Function
SD_DAT2
SD_DAT1
SPI_SS
SPI_MOSI
SPI_MISO
SPI_SCK
GND
NC
NC
NC
Description
SDIO Data 2
SDIO Data 1
SPI select. By default, this pin is not connected. Mount
R217 (0Ω) to connect.
SPI MOSI. By default, this pin is not connected. Mount
R216 (0Ω) to connect.
SPI MISO. By default, this pin is not connected. Mount
R215 (0Ω) to connect.
SPI Clock. By default, this pin is not connected. Mount
R214 (0Ω) to connect.
Ground
Not connected
Not connected
Not connected
5
6
7
8
1
2
3
4
Table 4-2. J201 Stacking Connector
Pin Number Function
NC
NC
NC
VCC_INT_P3V3
NC
GND
GND
NC
Description
Not connected
Not connected
Not connected
3.3V power supply. Mount jumper cap on J300-1 and
J300-2 to use this supply.
Not connected
Ground
Ground
Not connected
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 7
ATWILC3000
Hardware Specifications
5
6
7
8
3
4
1
2
Table 4-3. J202 Stacking Connector
Pin Number Function
SD_DAT3
SD_CLK
SD_CMD
PWML2/RTC_CLK
SD_DAT0
SLEEP
UART_RX
UART_TX
1
2
3
Table 4-4. J203 Stacking Connector
Pin Number Function
RST
IRQN
RTS
4 CTS
5
6
7
8
CHIP_EN
GPIO3/SUSPEND
NC
NC
3
4
1
2
5
6
Table 4-5. J204 Stacking Connector
Pin Number
UART_RX_1
UART_TX_1
NC
NC
NC
NC
Function
SDIO Data 3
SDIO Clock
Description
ATWILC3000 Reset to be controlled by the host MCU
Host interrupt request output
Bluetooth
®
UART RTS output. By default, this pin is not connected. Short J208 to connect.
Bluetooth
®
UART CTS input. By default, this pin is not connected. Short J209 to connect.
Chip enable
GPIO signal
Not connected
Not connected
Description
SDIO command
By default, this pin is not connected. Mount R315 (0Ω) to connect.
SDIO Data 0
Sleep mode control
Bluetooth
®
UART RXD. By default, this pin is not connected. Mount R222 (0Ω) to connect.
Bluetooth
®
UART TXD. By default, this pin is not connected. Mount R223 (0Ω) to connect.
Description
Bluetooth
®
UART receive
Bluetooth
®
UART transmit
Not connected
Not connected
Not connected
Not connected
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 8
ATWILC3000
Hardware Specifications
Description Pin Number Function
7
8
NC
NC
20
21
35
36
Table 4-6. J206 Stacking Connector
Pin Number Function
UART_RTS
UART_CTS
GND
GND
Not connected
Not connected
Description
Bluetooth
®
UART RTS output
Bluetooth
®
UART CTS input
Ground
Ground
4.2 ATWILC3000 Shield Raspberry Pi Stacking Connector
The ATWILC3000 Shield contains a Raspberry Pi compatible 40-pin stacking connector used to connect the board to a Raspberry Pi base board. This is also used for exposing the unused pins to the user. The pinout definition for the Raspberry Pi connector is given in the following table.
Table 4-7. J207 Stacking Connector
1
Pin Number Function
VCC_INT_P3V3
6
7
8
9
10
11
12
2
3
4
5
13
14
NC
GPIO2/SUSPEND
NC
CHIP_EN
GND
IRQN
UART_RX
GND
UART_TX
CTS
GEN1/RTC_CLK
SDDATA3
GND
Description
3.3V power supply. Insert jumper cap on J300-1 and
J300-2 to use this power supply.
Not connected
GPIO signal
Not connected
ATWILC3000 Chip enable is controlled by the host
MCU
Ground
Host interrupt request output
Bluetooth
®
UART receive
Ground
Bluetooth
®
UART transmit
Bluetooth
®
UART CTS input
By default, this pin is not connected. Mount R315 (0Ω) to connect.
SDIO Data 3. By default, this pin is not connected.
Mount R227 (0Ω) to connect.
Ground
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 9
SDCLK
Function
SDCMD
NC
SDDATA0
SPI MOSI
GND
SPI MISO
SDDATA1
SPI SCLK
SPI CS0
GND
SLEEP
NC
NC
NC
GND
NC
RST
NC
GND
NC
RTS
SDDATA2
NC
23
24
29
30
31
32
25
26
27
28
33
34
35
36
19
20
21
22
37
38
15
Pin Number
16
17
18
ATWILC3000
Hardware Specifications
Description
SDIO Clock. By default, this pin is not connected.
Mount R228 (0Ω) to connect.
SDIO Command. By default, this pin is not connected.
Mount R232 (0Ω) to connect.
Not connected
SDIO Data 0. By default this pin is not connected.
Mount R229 (0 Ω) to connect.
SPI Master Output Slave Input. By default, this pin is not connected. Mount R216 (0Ω) to connect.
Ground
SPI Master Input Slave Output. By default this pin is not connected. Mount R215 (0Ω) to connect.
SDIO Data 1. By default, this pin is not connected.
Mount R230 (0Ω) to connect.
SPI Clock. By default, this pin is not connected. Mount
R214 (0Ω) to connect.
SPI Select. By default, this pin is not connected. Mount
R217 (0Ω) to connect.
Ground
Sleep mode control
Not connected
Not connected
Not connected
Ground
Not connected
ATWILC3000 Reset is controlled by host MCU
Not connected
Ground
Not connected
Bluetooth
®
UART receive output. By default, this pin is not connected. Short J208 to connect.
SDIO Data 2. By default, this pin is not connected.
Mount R231 (0Ω) to connect.
Not connected
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 10
ATWILC3000
Hardware Specifications
Description
39
40
Pin Number
GND
NC
Function
Ground
Not connected
4.3 Power Supply Connector
The ATWILC3000 Shield is powered either from the shield connector or from an external power supply.
The header (J300) is used to switch between 3.3V supply from the shield connector or a 3.3V external power supply. The following tables provide pin details and the connector configuration of the power supply connector.
Table 4-8. ATWILC3000-SHLD J300 Power Supply Connector
1
2
3
Pin Number Description
3.3V internal power supply from shield connector
3.3V external power supply
Ground
Table 4-9. ATWILC3000-SHLD Power Supply Connector Configuration
Power Supply
To set 3.3V power supply from either Arduino
Shield or Raspberry Pi
To set 3.3V external power supply
J300 Connector Configuration
Place jumper cap between J300-1 and J300-2, and
J300-3 must not be not connected.
Remove jumper cap from J300-1 and J300-2. Apply external power to J300-2 and J300-3.
4.4 Current Measurement Header
The current measurement header (J301) is used to measure the current consumed by the ATWILC3000 module using an ammeter. There are two 0Ω resistors, R304 and R305, that can be used to measure the current consumed by individual power rails, such as VDDIO, and VBAT respectively.
4.5 Debug Connectors
The debug I 2 C (J302) and Wi-Fi UART (J307) connectors are not mounted on the board. The following table provides a description of the connectors.
Table 4-10. Debug I 2 C Connector
3
4
1
2
Pin on I 2 C Connector Pin on ATWILC3000 Module
10
1
11
—
I 2 C SCL
Ground
I 2 C SDA
Not connected
Function
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 11
ATWILC3000
Hardware Specifications
1
2
3
Table 4-11. Wi-Fi UART Connector
Pin on Extension Port Pin on ATWILC3000 Module
17
16
1
Function
UART Receiver
UART Transmitter
Ground
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 12
ATWILC3000
CE and FCC
5. CE and FCC
The unit is tested at SDIO clock frequency of 29.34 MHz in accordance to the essential requirements and other relevant provisions of:
• Emission
– FCC part 15 subpart B: 2013 (Class B) EN 55022:2010 Class B
– EN 55024:2010 Class B
• Immunity
– EN 55024:2010
– EN 61000-4-2:2009 contact: level 2 (±4kV), air: level 2 (±8kV)
– EN 61000-4-3:2006+A2:2010, 80 MHz to 1000 MHz, level 2 (3V/m)
– EN 61000-4-8:2010 level 2 (3A/m), continuous field
The technical construction file is located at:
Microchip Norway
Vestre Rosten 79
7075 Tiller
Norway
Every effort is made to minimize the electromagnetic emissions from the 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 above mentioned standards. The frequency and magnitude of the emissions are determined by several factors, including layout and routing of the target application, where the product is used.
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 13
ATWILC3000
Hardware Revision History and Known Issues
6. Hardware Revision History and Known Issues
6.1 Identifying Product ID and Revision
The revision and product identifier of the ATWILC3000 Shield is available on 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. In addition, the label contains a 10-digit serial number unique to each board.
The product identifier for the ATWILC3000 Shield is A09-2616.
6.2 Revision
Revision 4 is the initially released revision and there are no known issues.
Revision 5 has J302 and J303 as Do Not Populate.
Revision 6 and 7 has the dimension of PCB cutout reduced from 14.68 mm to 11.84 mm, as per the
ATWILC3000-MR110CA module datasheet recommendation for improved radiated performance.
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 14
ATWILC3000
Document Revision History
7. Document Revision History
Rev A - 06/2018
Section
Document
Changes
• Updated all the links in Design Documentation and Relevant Links section
• Updated the functions and descriptions of J207 Stacking Connector
• Added hardware revision details for Revision 5, 6 and 7
• Updated the document from Atmel to Microchip template
• Assigned a new Microchip document number
Previously Released Atmel Revisions
Doc. Rev.
42731B
42731A
Date
04/2017
05/2016
Comment
Added section regulatory notice with Argentina certification information
Initial document release
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User Guide DS50002769A-page 15
ATWILC3000
The Microchip Web Site
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Internet browser, the web site contains the following information:
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• General Technical Support – Frequently Asked Questions (FAQ), technical support requests, online discussion groups, Microchip consultant program member listing
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Microchip’s customer notification service helps keep customers current on Microchip products.
Subscribers will receive e-mail notification whenever there are changes, updates, revisions or errata related to a specified product family or development tool of interest.
To register, access the Microchip web site at http://www.microchip.com/ . Under “Support”, click on
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Users of Microchip products can receive assistance through several channels:
• Distributor or Representative
• Local Sales Office
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Customers should contact their distributor, representative or Field Application Engineer (FAE) for support.
Local sales offices are also available to help customers. A listing of sales offices and locations is included in the back of this document.
Technical support is available through the web site at: http://www.microchip.com/support
Microchip Devices Code Protection Feature
Note the following details of the code protection feature on Microchip devices:
• Microchip products meet the specification contained in their particular Microchip Data Sheet.
• Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the intended manner and under normal conditions.
• There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data Sheets. Most likely, the person doing so is engaged in theft of intellectual property.
• Microchip is willing to work with the customer who is concerned about the integrity of their code.
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User Guide DS50002769A-page 16
ATWILC3000
• Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not mean that we are guaranteeing the product as “unbreakable.”
Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.
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The Microchip name and logo, the Microchip logo, AnyRate, AVR, AVR logo, AVR Freaks, BitCloud, chipKIT, chipKIT logo, CryptoMemory, CryptoRF, dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KeeLoq,
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All other trademarks mentioned herein are property of their respective companies.
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User Guide DS50002769A-page 17
ATWILC3000
© 2018, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved.
ISBN: 978-1-5224-3263-0
Quality Management System Certified by DNV
ISO/TS 16949
Microchip received ISO/TS-16949:2009 certification for its worldwide headquarters, design and wafer fabrication facilities in Chandler and Tempe, Arizona; Gresham, Oregon and design centers in California and India. The Company’s quality system processes and procedures are for its PIC
®
MCUs and dsPIC
®
DSCs, KEELOQ ® code hopping devices, Serial EEPROMs, microperipherals, nonvolatile memory and analog products. In addition, Microchip’s quality system for the design and manufacture of development systems is ISO 9001:2000 certified.
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User Guide DS50002769A-page 18
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Tel: 31-416-690399
Fax: 31-416-690340
Norway - Trondheim
Tel: 47-7289-7561
Poland - Warsaw
Tel: 48-22-3325737
Romania - Bucharest
Tel: 40-21-407-87-50
Spain - Madrid
Tel: 34-91-708-08-90
Fax: 34-91-708-08-91
Sweden - Gothenberg
Tel: 46-31-704-60-40
Sweden - Stockholm
Tel: 46-8-5090-4654
UK - Wokingham
Tel: 44-118-921-5800
Fax: 44-118-921-5820
© 2018 Microchip Technology Inc.
User Guide DS50002769A-page 19
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