Table 3-1. EDBG LED Control
Operation Mode
Power LED
Status LED
Normal operation
Power LED is lit when power is
applied to the board.
Activity indicator, LED flashes
when any communication
happens to the EDBG.
Bootloader mode (idle)
The power LED and the status LED blinks simultaneously.
Bootloader mode (firmware
upgrade)
The power LED and the status LED blinks in an alternating pattern.
For further documentation on the EDBG, see the
.
3.2
Hardware Identification System
All Xplained Pro compatible extension boards have an ATSHA204A CryptoAuthentication chip 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
Data type
Example content
Manufacturer
ASCII string
Atmel'\0'
Product Name
ASCII string
Segment LCD1 Xplained Pro'\0'
Product Revision
ASCII string
02'\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
3.3
Power Sources
The SAMC21N Xplained Pro kit can be powered by several power sources as listed in the table below.
Table 3-3. Power Sources for SAMC21N Xplained Pro
Power Input
Voltage Requirements
Current Requirements
Connector Marking
External power
5V ±2% (±100mV) for
USB host operation.
4.3V to 5.5V if USB host
operation is not
required.
Recommended
minimum is 1A to be
able to provide enough
current for connected
USB devices and the
board itself.
Recommended
PWR
SAMC21N Xplained Pro
©
2017 Microchip Technology Inc.
User Guide
DS70005318A-page 9
