The ultra-small ANA-B4 module of u-blox is a high-performance Bluetooth low energy (BLE) module in a very small package

     The ultra-small ANA-B4 module of u-blox is a high-performance BLE module in a very small package. Nordic Semiconductor's nRF52833 chip-based modules have an independent version of open CPU (ANNA-B402) or u-connectXpress (ANNA-B412). SiP module size is only 6.5mm x 6.5mm, including antenna.

     The ANNA-B4 module has an internal chip antenna for easy integration and an antenna pin for the selection of external antenna. This series of products has obtained global certification and can be used with internal or external antennas. This reduces time, cost and effort for customers to integrate ANNA-B4 into their design. In order to ensure working in harsh professional environment, the temperature range of the module is extended to - 40 ° C to+105 ° C.

     ANNA-B402 has Bluetooth 5.1, embedded ARM Cortex-M4 microcontroller with FPU and the most advanced power performance. It has 512 kB Flash and 128 kB RAM, and can develop advanced applications using the open CPU architecture and the Nordic Semiconductor SDK. UART, USB, high-speed SPI, I ² C、I ² Wired interfaces such as S and GPIO can be used to connect to peripheral components.

     ANNA-B402 supports Bluetooth DF functions, including Angle-of-Arrival and Angle-of-leaving. This makes the positioning more accurate than using only the received signal strength. The module uses Bluetooth to provide extended communication range or more reliable connection remotely. In addition, Wirepas Massive mesh stack or Lumenradio MiraOS can be used to form large-scale industrial mesh networks.

     In addition to Bluetooth's low power consumption, it also provides support for Zigbee and Thread protocols, as well as NFC. Specific applications include intelligent lighting, asset tracking, indoor positioning, sensors, wearable devices, wireless connectivity and configurable devices.

     The ANNA-B412 module is delivered together with the u-connectXpress software, which provides support for the u-blox Bluetooth low-power serial port service, GATT client and server, beacon, Bluetooth remote, NFC, as well as peripheral devices and central roles at the same time. The u-blox u-connectXpress software allows the host to easily configure the connection using the AT command on the UART interface. Because of the security boot, this module provides top-level security, which ensures that the module only boots with the authenticated u-connectXpress software.