Atmel CryptoAuth Xplained Pro Installation manual
CryptoAuth Xplained Pro Development and Evaluation Kit [HARDWARE USER GUIDE]
Atmel-8893A-CryptoAuth-XPro-Hardware-UserGuide_092015
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Introduction
The Atmel®CryptoAuth Xplained Pro (CAXPro) Evaluation Kit is an extension add-on board that can be
used with a selection of Atmel ARM®microcontrollers. The Atmel CryptoAuthentication™ evaluation
board supports the Atmel ATSHA204A, ATECC508A, and ATAES132A crypto element devices (crypto
devices) in embedded design applications. The CAXPro has been developed to allow fast system
prototyping within the ARM Xplained Pro development environment. This kit gives engineers,
developers, and decision makers a tool to understand the device architecture and its uses for product
authentication, confidential file protection, perform two-factor logons, or prevent software piracy.
When connected to an ARM microcontroller and used with the Atmel Studio Framework (ASF), the
CAXPro will automatically detect the microcontroller type and automatically pull in the associated
software to support the crypto devices in embedded design applications.
The CAXPro allows fast system prototyping within the Atmel ARM Xplained Pro development
environment. It is a tool for engineers, developers, and decision makers to assist in understanding the
crypto device’s architecture and its uses for product authentication, confidential file protection, two-factor
logons, and software piracy prevention.
Complete support for the CAXPro is available at www.atmel.com/cryptokits.
Kit Contents
(1) Atmel CryptoAuth Xplained Pro Evaluation Extension Board
Kit Features
Crypto Authentication Devices
–Atmel ATSHA204A CryptoAuthentication IC: TWI (0xC8)
–Atmel ATECC508A CryptoAuthentication IC: TWI (0xC0)
–Atmel ATAES132A CryptoAuthentication IC: TWI (0xA0)
Atmel Standard XPRO Extension Header
Atmel Identification IC: SWI Used for Atmel Studio Framework (ASF) Identification.
Extension Header Connection (connect additional extension devices)
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Table of Contents
Board Overview ....................................................................................................................4
Optional XPRO Header....................................................................................................................................4
Atmel Studio Framework (ASF) ID Device.......................................................................................................4
XPRO Extension Header .................................................................................................................................5
Getting Started......................................................................................................................6
Step 1 Identify the Paired Microcontroller/Development Kits.....................................................................6
Step 2 Identify other Required Atmel Extension Boards............................................................................6
Step 3 Install the Atmel Studio Framework (ASF) .....................................................................................6
Step 4 Assemble the Hardware.................................................................................................................6
Step 5 Initiate Atmel Studio Framework (ASF)..........................................................................................7
Step 6 Select Example Project and Begin Programming...........................................................................7
Crypto Authentication Software Libraries ..........................................................................8
CryptoAuth Xplained Pro Schematics.................................................................................9
Revision History .................................................................................................................10
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Board Overview
Figure 1. CryptoAuth Xplained Pro Extension Board
Optional XPRO Header
CAXPro optionally allows an additional XPRO male header to be mounted which allows additional
extensions such as a WIFI module or smart sensor. All XPRO connections pass through from one port to
the other with the exception of the ID signal. The ID Jumper is used to select which of the two boards will
be identified by ASF. The default position shown in Figure 1 selects the CAXPro board ID Chip.
Atmel Studio Framework (ASF) ID Device
All Xplained Pro compatible extension boards have an Atmel ATSHA204A crypto authentication chip
mounted. This chip contains information that identifies the extension with its name and some extra data.
When an Xplained Pro extension board is connected to an Xplained Pro MCU board the information is
read and sent to Atmel Studio via the SWI over the ID signal. For the board to be detected the ID jumper
must be connected as shown in Figure 1. Once connected to ASF, this board will be identified as a
CAXPro extension board. It will load the appropriate:
Atmel CryptoAuthentication example projects and software libraries.
Example projects and software libraries associated with the attached microcontroller board.
Relevant Technical Documentation
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The following table details the information stored on the ID Device.
Table 1. ID Device
Data Field
Data Type
Example Content
Manufacturer
ASCII String
Atmel’\0’
Product Name
ASCII String
CryptoAuth Xplained Pro’\0’
Product Revision
ASCII String
03’\0’
Product Serial Number
ASCII String
2504030200000010’\0’
Minimum Voltage [mV]
uint16_t
2000
Maximum Voltage [mV]
uint16_t
5500
Maximum Current [mA]
uint16_t
30
XPRO Extension Header
The XPRO extension header is the standard header used with all of the Atmel Xplained Pro boards. All
microcontroller boards have one or more 20-pin male extension header, and all XPRO extension boards
have a 20-pin female header. The connector pinout is defined below and lists how the signals are
connected to the optional extension header.
Table 2. XPRO Header Pinout
Pin
Default XPRO
Signal Name(1)
CryptoAuth-XPRO
Signal Name
Optional
Header
Comment
1
ID
ID
No
To connect to ID of optional extension board,
place the jumper in position one and two.
2
GND
GND
Yes
3
ADC(+)
N/A
Yes
4
ADC(-)
N/A
Yes
5
GPIO1
AES-AUTHO
Yes
If AES_AUTHO not needed, it can be
disconnected via zero Ω resistor.
6
GPIO2
N/A
Yes
7
PWM(+)
N/A
Yes
8
PWM(-)
N/A
Yes
9
IRQ/GPIO
N/A
Yes
10
SPI_SS_B/GPIO
N/A
Yes
11
I2C SDA
I2C SDA
Yes
Since I2C multi-drop bus additional I2C devices
can be connected to optional extension board.
12
I2C SCL
I2C SCL
Yes
13
USART_RX
N/A
Yes
14
USART_TX
N/A
Yes
15
SPI_SS_A
N/A
Yes
16
SPI_MOSI
N/A
Yes
17
SPI_MISO
N/A
Yes
18
SPI_SCK
N/A
Yes
19
GND
GND
Yes
20
VCC
VCC
Yes
Note: 1. Typically all signals on the XPRO connector can be configured as GPIOs.
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Getting Started
The CAXPro should be paired with an Atmel microcontroller or development kit which supports the
standard XPRO header interface. In addition, the associated crypto software libraries are required.
Please visit the Atmel website at http://www.atmel.com/cryptokits under the Software Library headings.
Step 1 Identify the Paired Microcontroller/Development Kits
Identify which microcontroller and features are required to support the overall project needs. Note that
choosing an Atmel microcontroller will have a much higher level of support available. Various tools are
available on the Atmel Website to help select the microcontroller that matches the projects needs.
Step 2 Identify other Required Atmel Extension Boards
Atmel provides a wide range of extension boards that connect to standard Atmel microcontroller
development platforms. Multiple extensions can be supported on platforms that have multiple XPRO
extension interfaces. Atmel provides a bread boarding extension which is used for system development.
CAXPro provides an expansion header so an additional extension board can be connected.
Step 3 Install the Atmel Studio Framework (ASF)
Atmel XPRO extension and development kits are integrated into the ASF. The ID chips on the main
development board and extension headers allow ASF to identify example projects and software that can
be helpful to a developer in starting their software development.
The latest version of ASF is located at:
http://www.atmel.com/tools/AVRSOFTWAREFRAMEWORK.aspx
Step 4 Assemble the Hardware
1. Connect the various Xplained Pro development extensions to the main Atmel microcontroller
development board. Note that most development boards can be powered either through the USB
port or via an external supply.
2. Connect the USB Cable between the PC that will run ASF and the EDBG debugger port of the
microcontroller. Connecting to the EDBG port allows access to the ID chips on the various boards.
A complete list of XPRO boards can be located at:
http://www.atmel.com/products/microcontrollers/avr/xplained.aspx
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Figure 2. SAMD20 with Atmel CryptoAuth Xplained Pro
Step 5 Initiate Atmel Studio Framework (ASF)
Once the hardware is connected and the USB cable is connected to the PC, ASF can be initiated. The
first thing ASF does is to scan for the software of the connected microcontroller development kit and
extensions. The ASF environment identifies the extensions and provides software examples to facilitate
in getting started with the combined development kits.
Step 6 Select Example Project and Begin Programming
When ASF opens, it initially identifies the microcontroller board and all extension boards connected to
the microcontroller board. From this, an example project can be selected. The various code components
are grouped together and an initial project can be created. Creation of a new project can then begin.
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Crypto Authentication Software Libraries
Atmel provides a variety of software libraries for use with Crypto Authentication products. Some of these
will get incorporated into an ASF project when the CAXpro hardware is connected to the ASF
development environment. Additional libraries and example projects will be added over time.
Table 3. Atmel CryptoAuthentication Libraries
Library
Device Project Development Support
CryptoAuthentication ATSHA204A Development Library
ATSHA204A
CryptoAuthentication ATECC108A/508A Development Library
ATECC108A and ATECC508A
CryptoAuthentication ATAES132A Development Library
ATAES132A
Atmel Crypto Authentication Library (ATCALIB)
Atmel CryptoAuthentication devices and is
integrated into ASF.
For more information on the software libraries please go to: http://www.atmel.com/cryptokits and look
under the heading of software libraries.
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CryptoAuth Xplained Pro Schematics
ATSHA204A I2C UDFN
SDA 5
SCL 6
GND
4
VCC
8
PAD
9
NC 1
NC 2
NC 3
NC 7
U4
ATSHA204A-I2C
TWI_SDA
VCC
TWI_SCL
100n
C4
GND
VCC
ATSHA204AUDFN TWI
ATECC508A I2C UDFN
SDA 5
SCL6
GND
4
VCC
8
PAD
9
NC 1
NC 2
NC 3
NC 7
U2
ATECC508A-I2C
TWI_SDA
VCC
TWI_SCL TWI_SCL
TWI_SDA
11
2
2
3.9k
R2
100n
C1
VCC
VCC
GND
11
2
2
3.9k
R1
ATECC508A UDFN TWI
ATAES132A I2C UDFN
SDA 5
SCL 6
GND
4
VCC
8
PAD
9
NC 1
AUTHO 2
NC 3
NC 7
U3
ATAES132A-I2C
TWI_SDA
TWI_SCL
100n
C3
GND
VCC
GND AES_AUTHO
0R
R3
ATASE132A UDFN TWI
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Revision History
Doc Rev.
Date
Comments
8893A
09/2015
Initial document release.
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© 2015 Atmel Corporation. / Rev.:Atmel-8893A-CryptoAuth-XPro-Hardware-UserGuide_092015.
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