USB-ANNA-B4 - User guide
UBX-22008565 - R01
Product description
Page 4 of 11
C1-Public
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Product description
USB-ANNA-B4 is an evaluation board with a USB form factor. Accommodated within a standard USB
stick that plugs directly into the USB port on your computer, the board allows quick prototyping of a
variety of extremely low-powered Internet of Things (IoT) applications. USB-ANNA-B4 supports the
full Bluetooth Core specification v5.1 and IEEE 802.15.4 standard.
USB-ANNA-B4 boards are available in two variants to accommodate alternative software solutions:
•
USB-ANNA-B402
–
includes an Open CPU ANNA-B402 module with an internal, 2.4 GHz antenna
(integrated in the SiP).
•
USB-ANNA-B412
–
includes an ANNA-B412 module with pre-flashed u-connectXpress software
and an internal, 2.4 GHz antenna (integrated in the SiP).
Figure 1: USB-ANNA-B402/B412 evaluation board
USB-ANNA-B4 evaluation boards support the SEGGER J-Link debug interface that can be used with
the Open CPU, ANNA-B402, variants of the USB stick.
The manufacturer of the nRF52833 SoC, Nordic Semiconductor, provide a free Software
Development Kit (SDK) that includes a broad selection of drivers, libraries, and example applications
that can be used for rapid prototyping.
USB-ANNA-B4 USB evaluation sticks include an FTDI chip that converts USB data to UART data for
module communication and require download of the FTDI driver. USB sticks integrating ANNA-B412
u-connectXpress module variants are preferably controlled using s-center evaluation software
USB-ANNA-B4 software and documentation is available at
1.1
Key features
The USB-ANNA-B4 Bluetooth Low Energy has the following features and interfaces:
•
Full Bluetooth 5.1 functionality
•
802.15.4 PHY
•
I2C interface
o
A temperature sensor, LM75B, is available on the I2C interface.
•
USB-ANNA-B412 supports u-connectXpress software for accelerated time to market
•
USB-ANNA-B402 with Open CPU for embedded application development
•
Full UART to USB converter with a virtual COM port for control of the extended UART features of
the u-connectXpress software
•
On-board J-link 6-Pins-Needle connector
•
RGB LED
•
Reset push button
•
SW2 for Reset of UART settings or connection trigger in u-connectXpress
