4.
Hardware Revision History and Known Issues
This user guide is written to provide information about the latest available revision of the board. The following
sections contain information about known issues, a revision history of older revisions, and how older revisions differ
from the latest revision.
4.1
Identifying Product ID and Revision
The revision and product identifier of the AVR-BLE Board can be found in two ways: Either by utilizing the Atmel
Studio/Microchip MPLAB
®
X IDE Kit Window or by looking at the sticker on the bottom side of the PCB.
By connecting a AVR-BLE to a computer with Atmel Studio/Microchip MPLAB
®
X IDE running, the Kit Window will
pop up. The first six digits of the serial number, which is listed under kit information, contain the product identifier and
revision.
Tip:
The Kit Window can be opened in MPLAB
®
X IDE through the menu bar
Window > Kit Window
.
The same information can be found on the sticker on the bottom side of the PCB. Most boards will 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, containing the product identifier, revision, and serial
number.
The serial number string has the following format:
"nnnnrrssssssssss"
n = product identifier
r = revision
s = serial number
The product identifier for AVR-BLE is A09-3314.
4.2
Revision 3
Revision 3 is functionally the same as revision 2, but features a RN4870 BLE module with firmware version 1.40 (part
number RN4870-V/RM140).
In the silkscreen, the part number of the serial flash chip is wrong. It should be SST25PF040C, but shows
SST25P040C.
4.3
Revision 2
Revision 2 is the initial released revision of the board. It features a RN4870 BLE module with firmware version 1.30
(part number RN4870-I/RM130).
Hardware Revision History and Known Issues
©
2020 Microchip Technology Inc.
User Guide
DS50002956A-page 22
