Omer Cheema
Omer Cheema
Senior Director of IoT & Wi-Fi Business Division, IoT and Infrastructure Business Unit
Published: January 6, 2023

IoT was supposed to make our homes comfortable, secure and energy efficient. However, it is not happening yet. At least not for the mainstream market. The adoption of smart home has halted at an early adopter stage. Is the main reason for the lack of adoption of smart home technologies the problem of interoperability among devices? How do you make sure that the new shiny thermostat you just bought will work with rest of the devices at home? Does your home hub support this device? Is the protocol version (and sub version) aligned with the requirements of the rest of the smart homes? Will you be able to tell Alexa to control it or you will need Siri for that? Will you need to install an additional app of your phone for controlling the newly added device or an existing app on your phone can do the job? Industry has been struggling with this challenge since the inception of smart home.

Now, the good news. Matter 1.0 is finally here. Matter promises to solve this problem of interoperability. Since late 2019, the smartest and the brightest minds of the smart home industry, coming from more than 300 leading companies, have been working together to define a unified framework that aims to solve the fragmentation issues in smart homes. In technical terms, the vision of Matter is to create an IP based protocol that securely and robustly connects various smart devices with each other, regardless of the brand of the manufacturer, and across the ecosystems. Matter is an application layer protocol that abstracts the underlying connectivity technologies such as Wi-Fi, Thread and Bluetooth Low Energy (BLE). By using a common piece of software stack, the device manufacturers who build with Matter will not have to worry about supporting various smart home ecosystems and voice services such as Amazon’s Alexa, Apple’s Siri, Google’s Assistant, and others. Smart home users will be able to buy any Matter certified device, use any voice assistant, and use any smart home platform to control their devices.

Matter is the Application layer of Future IoT Devices
Figure 1: Matter is the Application layer of Future IoT Devices

Another key feature of Matter is local control. Typical inter-device communication within smart home happens through cloud. Each device sends its data to the relevant cloud. APIs within different clouds allow devices to interact with each other. With Matter, devices can now communicate with each other locally without a need to send the data to the cloud. The data from devices can stay within the home network. Not only does local control provide benefits in terms of latency, security and response times but also it ensures that the devices continue to work in case of interruption in internet connection of the cloud service.

Smart Home with Matter: Inter Device Communication doesn’t require cloud. Benefits of Local Control: No dependency on Internet, Low Latency, and Security
Figure 2: Smart Home with Matter: Inter Device Communication doesn’t require cloud

Ensuring a common standard of security features is another key aspect of Matter. Current IoT devices lack security. As a matter of fact, insecure IoT devices are the cause of the history’s largest DDoS attack (Mirai botnet) which brought down a huge portion of the internet in the US and Europe. The issue is that IoT device makers are usually more focused on device features and time to market while security is a “nice to have” requirement. As a result, many products sold in the market lack necessary security capabilities. Matter solves this problem by defining security capabilities of devices that aim to be Matter certified. For example, Root of Trust is a requirement for Matter certified devices. All communication needs to be secure through TLS and encryption needs to be based on well proven algorithms such as SHA256. “Ease of use” and “security” are usually considered two conflicting priorities. Matter aims to ensure safety through its comprehensive security framework without compromising on user experience.

Matter stack has been defined to keep compute and memory foot-print low. Open-source Matter stack requires less than 128KB of RAM and less than 1MB of flash. Computation requirements are low and MCU class devices can easily run Matter.

Although it is just the beginning, Matter 1.0 specs already support a range of devices including Lighting products (plugs, lightbulbs, switches, etc.), door locks, thermostats and HVAC controllers, blinds and shades, home security sensors (such as door and window sensors, motion sensors, and smoke and carbon monoxide detectors), garage door controllers, wireless access points and bridges, and televisions and video player. Support for security cameras, smart speakers, home appliances and robotic vacuums is already planned for subsequent versions of Matter. With the ecosystem expansion, new use cases and applications are expected to emerge. Matter participants including Renesas are committed to enriching and enhancing the Matter ecosystem with meaningful partnerships with IoT device makers and other key stakeholders.

In short, Matter is a major step towards mass-market adoption of smart homes. IoT device makers, who build with Matter, can benefit from reduced cost and time-to-market by using open-source code with exceptional specifications. At Renesas, we are strongly committed to Matter. Renesas has all major connectivity technologies of Matter such as Bluetooth Low Energy, Wi-Fi and Thread. Support for Matter is a critical piece of our strategy as a leader in smart home connectivity space. We are engaged with major industry players for standardization activities. Our engineering teams have been working on Matter readiness. All our relevant connectivity products will be “Matter ready” going forward.

More information on Renesas’ Matter support is available at

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