8. Hardware Revision History and Known Issues
This user guide is written to reflect the latest available revision of the kit. This chapter contains
information about known issues, a revision history of older revisions, and how older revisions differ from
the latest revision.
8.1 Identifying Product ID and Revision
The revision and product identifier of the Xplained Pro boards can be found in two ways: either through
Atmel Studio or by looking at the sticker on the bottom side of the PCB.
When an Xplained Pro MCU board is connected to a computer with Atmel Studio running, an information
window with the serial number is shown. The first six digits of the serial number contain the product
identifier and revision. Information about connected Xplained Pro extension boards is also shown in the
window.
The same information can be found on the sticker on the bottom side of the PCB. Most kits have stickers
that have the identifier and revision printed in plain text as A09-nnnn\rr, where nnnn is the identifier and rr
is the revision. Boards with limited space have a sticker with only a data matrix code, which contains a
serial number string.
The serial number string has the following format:
"nnnnrrssssssssss"
n = product identifier
r = revision
s = serial number
The product identifier for the SAM E54 Xplained Pro is A09-2748.
8.2 Revision 5
Device revision A0 of ATSAME54P20A is mounted on revision 5 of SAM E54 Xplained Pro.
8.2.1 VBAT Pin
There is an issue with the VBAT pin in ATSAME54P20A revision A0. When VBAT > VDDIO there is a
current over-consumption rendering the on-board super-capacitor backup solution unusable.
8.3 Revision 4
Revision 4 is the initially released revision.
The Early Adopter version of ATSAME54P20A is mounted on revision 4 of SAM E54 Xplained Pro.
8.3.1 VBAT Pin
There is an issue with the VBAT pin in ATSAME54P20A revision A0. When VBAT > VDDIO there is a
current over-consumption rendering the on-board super-capacitor backup solution unusable.
SAM E54 Xplained Pro
© 2017 Microchip Technology Inc.
DS70005321A-page 45
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