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LoRa-based module with reduced current consumption

Murata has announced what it claims is the smallest LoRa-based module currently on the market, at just 10.0 mm x 8.0 mm x 1.6 mm.

It has been designed for a wide range of high-volume applications where small size, long range, extended battery life, security and a competitive price point are requirements.

Based upon a second-generation Semtech SX1262 radio frequency IC (RFIC), the Type 1SJ LoRa module also features an open STM32L0 microcontroller (MCU) from STMicroelectronics along with an RF switch and 192kB of Flash memory and 20kB of RAM. This extensive memory provision ensures that sufficient resources are available for the application layers.

Also housed in the module is a temperature-controlled crystal oscillator (TXCO) and multiple communication interfaces including UART / I2C / SPI / ADC / USB and various GPIOs.

Designed for deployment globally, the module supports ISM bands from 868 MHz to 916 MHz, including those used in Europe, USA, India, China and the Pacific Rim.

Operating from a single supply rail (up to 3.9V DC), the module incorporates several low power modes that allow the real time clock (RTC) to operate while drawing a typical current of just 1.3µA. This enhanced current consumption allows devices based upon Murata’s module to operate for years from a single battery.

The open MCU allows the module to be easily flashed with code from Trusted Objects that ensures the Flash memory is secure and encrypted, protecting the end system against the ever-increasing threat of malicious tampering. The resin mold package provides physical ruggedness, allowing the module to operate across the temperature range -40ºC to +85 ºC.

The Type 1SJ LoRa-based module is intended to help designers develop solutions with demanding requirements, especially in areas such as asset tracking, utilities, agriculture, smart cities, smart buildings, industrial and other IoT applications.

Author
Neil Tyler

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