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Sub-GHz wireless comm ICs aimed at Wi-SUN-capable devices

Posted: 19 Nov 2015 ?? ?Print Version ?Bookmark and Share

Keywords:Renesas Electronics? Wi-SUN? wireless communication? smart metre? HEMS?

Renesas Electronics Corp. has unleashed a couple of sub-gigahertz band wireless communication solutions for devices supporting Wi-SUN. According to the company, the devices are the world's first to contain automatic dual-address filtering function that will help cut the time required to develop home energy management systems (HEMS), smart metres and other devices.

The core of these solutions is the RAA604S00 wireless communications SoC, which combines support for communication with smart metres essential to HEMS devices and support for communication with other home devices in a single chip. The first Wi-SUN wireless solution pairs the RAA604S00 wireless communications SoC with the RX63N 32bit MCU. The second Wi-SUN wireless solution combines the RAA604S00 SoC with the low-power RL78/G1H 16bit MCU.

In addition, a development environment is available consisting of an evaluation board supplied by Tessera Technology Inc. and Renesas' communication control software. The combination of the evaluation board mounted with the RX63N MCU and the communication control software is the world's first to quality as a Home Area Network (HAN) certification Certified Test Bed Unit (CTBU) as defined by the Wi-SUN Alliance, stated the company. These solutions enable system manufactures to ensure interconnectivity with all third-party devices. They enable system manufacturers to develop HEMS products that comply with the Wi-SUN standard quickly and reliably.

Renesas sub-GHz band wireless communication solutions

The devices from Renesas flaunt automatic dual-address filtering function that will help cut the time required to develop home energy management systems, smart metres and other devices.

The RAA604S00 Wi-SUN-compliant wireless communications SoC and the RL78/G1H Wi-SUN-compliant MCU with integrated RAA604S00 both support sub-gigahertz band wireless communication in regions using different frequency bands such as Europe, North America and ASEAN countries simply by changing settings in the wireless communication block.

An evaluation board mounted with the RAA604S00 Wi-SUN-compliant wireless communications SoC and RX63N MCU, along with communication control software, have been adopted as a standard device for testing HAN certification interconnectivity under the Wi-SUN standard. The solution makes it possible to ensure interconnectivity with all third-party devices. This simplifies the process of certifying user goods and helps to shorten the development time.

The RAA604S00 Wi-SUN-compliant wireless communications SoC integrates in a single chip functionality for automatically filtering two communication addresses, making use of software for filtering processing unnecessary and thereby shortening development time. Filtering can be accomplished without delay even in crowded communication environments of the future where the number of sub-gigahertz band wireless communication devices has increased, preventing system instability. The chip also uses low power, with a receive current during Wi-SUN communication of 6.1mA and a receive standby current of 5.8mA (typ. Vcc = 3.3V). This helps extend battery life and allows the use of more compact batteries in battery-powered devices.

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