Hardware Identification System; Power Sources - Atmel Xplained Pro SAM4L8 User Manual

For further documentation on the EDBG, see the
3.2.

Hardware Identification System

All Xplained Pro compatible extension boards have an Atmel ATSHA204 CryptoAuthentication
mounted. 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 MCU board the information is read and
sent to Atmel Studio. The Atmel Kits extension, installed with Atmel Studio, will give relevant information,
code examples, and links to relevant documents. The table below shows the data fields stored in the ID
chip with example content.
Table 3-2. Xplained Pro ID Chip Content
Data field
Manufacturer
Product Name
Product Revision
Product Serial Number
Minimum Voltage [mV]
Maximum Voltage [mV]
Maximum Current [mA]
3.3.

Power Sources

The SAM4L8 Xplained Pro kit can be powered by several power sources as listed in the table below.
Table 3-3. Power Sources for SAM4L8 Xplained Pro
Power input
External power
Embedded debugger
USB
Target USB
The kit will automatically detect which power sources are available and choose which one to use
according to the following priority:
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EDBG User
Data type
ASCII string
ASCII string
ASCII string
ASCII string
uint16_t
uint16_t
uint16_t
Voltage requirements
5V ±2% (±100mV) for
USB host operation.
4.3V to 5.5V if USB host
operation is not
required.
4.4V to 5.25V (according
to USB spec.)
4.4V to 5.25V (according
to USB spec.)
Guide.
Example content
Atmel'\0'
Segment LCD1 Xplained Pro'\0'
02'\0'
1774020200000010'\0'
3000
3600
30
Current requirements
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.
500mA (according to
USB spec.)
500mA (according to
USB spec.)
Atmel SAM4L8 Xplained Pro [USER GUIDE]
Atmel-42103B-SAM4L8-Xplained-Pro_User Guide-04/2016
™
chip
Connector marking
PWR
DEBUG USB
TARGET USB
10