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Nordic BLE SoC Selected for Cloud-Connected Thermostat

Nordic Semiconductor has announced that Sikom, a developer of GSM-based IoT platforms, employs Nordic’s nRF52840 Bluetooth 5/Bluetooth Low Energy (Bluetooth LE) advanced multiprotocol System-on-Chip (SoC) in its ‘Bluetooth Thermostat EP’ to support smartphone connectivity and smart-home networking. The thermostat is available to consumers and OEMs developing their own heating control systems.

The Nordic SoC’s Bluetooth 5 long-range capability enhances connection stability, boosting range, and allowing the thermostat to be configured and controlled from anywhere in the house. From a companion app on a Bluetooth 4.0 (and later) smartphone the user can control thermostat features such as comfort and economy temperature set points, week programs, vacation modes and temperature logs.

Because the thermostat can be controlled and configured directly from the smartphone, there is no requirement for a proprietary gateway between mobile device and thermostat, lowering the cost and complexity of installation and setup. In addition, the thermostat’s Bluetooth 5 connectivity enables it to join a Sikom smart-home network and communicate directly with other wireless devices to support advanced features such as power control and limiting. The thermostat also integrates with 4G/LTE (cellular) technology to enable remote control via Sikom’s Cloud platform.

Enabled by the nRF52840 SoC’s 32-bit Arm Cortex M4F processor, 1 MB Flash memory, and 256 KB RAM, the Bluetooth Thermostat EP platform can support a variety of complex remote thermostat/heating applications. The processor has ample power to run the Bluetooth 5 RF software protocol (“stack”) and Sikom’s application software and bootloader. The SoC also supports Over-the-Air Device Firmware Updates (OTA-DFU) for future improvements.

Nordic’s nRF52840 Bluetooth 5/Bluetooth LE SoC is Nordic’s most advanced ultra low power wireless solution. The SoC supports complex Bluetooth LE and other low-power wireless applications that were previously not possible with a single-chip solution. The SoC combines the Arm processor with a 2.4 GHz multiprotocol radio architecture featuring -96dB RX sensitivity and an on-chip PA boosting output power to a maximum of 8 dBm. The SoC is supplied with the S140 SoftDevice, a Bluetooth 5-certified stack which supports all the features of the standard and provides concurrent Central, Peripheral, Broadcaster and Observer Bluetooth LE roles.

Nordic Semiconductor | www.nordicsemi.com

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