Telecoms, Datacoms, Wireless, IoT


Add BLE connectivity to embedded applications

22 November 2023 Telecoms, Datacoms, Wireless, IoT

MikroElektronika has introduced ANNA-B412 Click, a compact add-on board that provides BT/BLE connectivity for any embedded application. It features the u-blox ANNA-B412, a standalone Bluetooth 5.1 low-energy module.

This System-in-Package (SiP) design with pre-flashed u-connectXpress software supports Bluetooth LE Serial port service, GATT client and server, Bluetooth beacons, Bluetooth long-range, NFC, and simultaneous peripheral and central roles. In LE mode, the Bluetooth module can achieve up to 2 Mbps data rates. To optimise power consumption, the module supports active, standby, and sleep modes.

The ANNA-B412 module is powered by the nRF52833 from Nordic Semiconductor, which includes an integrated 2,4 GHz transceiver with 8 dBm output power and powerful Arm Cortex-M4 with FPU processor. The module is equipped with 512 kB of flash memory and 128 kB of RAM.

For a Bluetooth connection in a 2,4 GHz frequency band, ANNA-B412 Click is equipped with a printed PCB antenna that supports 40 channels. The Bluetooth antenna has 9 dBm of maximum radiated output power. For NFC, ANNA-B412 Click is equipped with a u.Fl connector, and can operate as a 13,56 MHz NFC tag at a bit rate of 106Kbps.

ANNA B412 Click uses a 4-Wire UART interface to communicate with the host MCU with a commonly used UART Rx/Tx and RTS/CTS as UART control flow pins at a default baud rate of 115200 bps.


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