STMicroelectronics SPBTLE-1S Bluetooth Low Energy (BLE) module

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To help product innovators streamline prototyping and development of connected smart objects, STMicroelectronics’ SPBTLE-1S ready-to-use Bluetooth Low Energy (BLE) module integrates all the components needed to complete the radio subsystem. The BLE module integrates ST’s BlueNRG-1 application-processor system-on-chip (SoC) and balun, high-frequency oscillators, and a chip antenna among others.

Developers can use the module to bypass hardware-design and RF-circuit layout challenges. The SPBTLE-1S is BQE-approved and FCC, IC and CE-RED (Radio Equipment Directive) certified to simplify end-product approval for North America and EU markets. ST’s Bluetooth 4.2 certified BLE protocol stack is included, and the supporting software-development kit (SDK) contains a wide range of Bluetooth profiles and sample application code.

Coming in a space-efficient 11.5 x 13.5 mm profile, and with a wide supply-voltage range of 1.7–3.6 V, the module is suitable for small, battery-operated objects powered by various types of sources such as a primary button cell or rechargeable Li-ion battery. High RF output power of +5 dBm and good receiver sensitivity help to maximise communication range.

The SoC at the heart of the module implements the complete BLE physical layer (PHY), link layer and network/application-processing engine comprising a low-power ARM Cortex-M0 core with 160 KB Flash, 24 KB RAM with data retention, and a security co-processor. The SoC also implements smart power management, with a DC/DC converter capable of powering the module to ensure optimum energy efficiency.

Users can leverage an extensive set of interfaces, including a UART, two I²C ports, SPI port, single-wire debug and 14 GPIOs, as well as peripherals including two multifunction timers, a 10-bit ADC, watchdog timer and real-time clock, a DMA controller and a PDM stream processor interface, which is suitable for developing voice-controlled applications.

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