TME: bluetooth chips from Nordic Semiconductor

In the times of the dynamic development of the Internet of Things, more and more often wireless communication is one of the first prerequisites for electronic devices. Implementing such solutions on one’s own can be troublesome and time-consuming. Therefore, it’s reasonable to use readymade SoC products such as Nordic Semiconductor’s nRF52 series. It includes the nRF52832 and nRF52840 chips, as well as a Development Kit. The chips are based on a 32-bit ARM Cortex-M4F microcontroller. They support radio communication over the 2.4GHz band in BLE (Bluetooth Low Energy), ANT, and NFC technologies. The nRF52840 model is especially noteworthy, as it also offers support for Bluetooth 5.0 and is equipped with a cryptographic coprocessor. The chips can be powered by voltage from 1.7V to 3.6V (nRF52832) or even up to 5.5V (nRF52840). Hence, the nRF52840 can be powered directly from a USB line. The nRF52 Development Kit includes, among other things, the nRF52832 chip and an NFC antenna. It has Arduino-compliant pins.

The nRF51 series includes the nRF51822, nRF51824, and nRF51422 chips, as well as a few development kits based on the chips. All of them are equipped with a 32-bit microcontroller with the ARM Cortex-M0 core. They have a transceiver module operating over the 2.4GHz band, which means that after implementing an appropriate protocol stack, they enable communications with the use of e.g. BLE or ANT standards. Take a closer look at the nRF51824 chip. It has the AEC-Q100 Grade 2 certificate, which means that it’s capable of operating in the temperatures from -40°C to 105°C. What is more, it is also equipped with an AES encrypting coprocessor.

Nordic Semiconductor provides software to support users working with the nRF51 or nRF52 chips. The nRF5 SDK and nRF5 SDK for IoT bundles can be downloaded at no charge from the company website. They include a wide selection of drivers and libraries to support various communication protocols, and designed for different chip models. The nRF5 SDK for IoT bundle was created primarily for the Internet of Things, as it enables the implementation of the IPv6 protocol over Bluetooth.

Wireless Tag products are readymade solutions based on communication chips from Nordic Semiconductor. The range comprises communication modules in the Wi-Fi or BLE standards, including chips for SMD mounting (e.g. WT8266-S1 and WT51822-S4AT) and development kits equipped with a USB interface (WT8266-DK and WT51822-DK). By using such readymade solutions, you can noticeably speed up the designing process, and the development kits are great for tests and education.

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