Hardware Identification System; Power Sources - Microchip Technology SAM R30 Xplained Pro User Manual

The ranges are automatically switched by the XAM to achieve the best measurement results and the
currently active range is visualized in the
the shunt resistor is 100 mV, and the XAM switches the range automatically before reaching this limit.
3.3

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 Atmel
Studio. The following table shows the data fields stored in the ID chip with example content.
Table 3-3. Xplained Pro ID Chip Content
Data Field
Manufacturer
Product Name
Product Revision
Product Serial Number
Minimum Voltage [mV]
Maximum Voltage [mV]
Maximum Current [mA]
3.4

Power Sources

The SAM R30 Xplained Pro kit can be powered by several power sources, as listed in the table below.
Table 3-4. Power Sources for SAM R30 Xplained Pro
Power Source
External Power
Embedded debugger
USB
Target USB
The kit automatically detects which power sources are available and chooses which one to use according
to the following priority:
1. External power.
©
2017 Microchip Technology Inc.
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Data Visualizer
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 a USB
host operation is not
required.
4.4V to 5.25V (according
to USB spec.)
4.4V to 5.25V (according
to USB spec.)
User Guide
ATSAMR30-XPRO
front-end tool. The maximum voltage drop over
Example Content
Atmel'\0'
Segment LCD1 Xplained Pro'\0'
02'\0'
1774020200000010'\0'
3000
3600
30
Current Requirements
In USB host applications
a minimum of 1A is
recommended to supply
the kit and the USB
device.
Maximum recommended
current is 2A.
500 mA (according to
USB spec.)
500 mA (according to
USB spec.)
Connector Marking
PWR
DEBUG USB
TARGET USB
DS50002612A-page 11