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under certain conditions. While this is less of a concern for a consumer device, which is rarely used in such extreme conditions, it would be unacceptable for an emergency response system. At best, the cost is reputational damage to the end product and a service call to replace the faulty device. System designers must ensure that the components selected for the sensing and communication system are robust over changing environmental conditions. Corrupted Memory Can Lead to Unexpected Outcomes Reliability is also a concern on the communications microcontroller. Although extremely reliable, both flash and nonvolatile memory can occasionally become corrupted. This can occur as a result of unintended effects caused by the operating environment or intentionally through malicious hardware hacking. Regardless of the mechanism, it is imperative that microcontrollers are equipped with the necessary integrity features to identify when a device has been corrupted. Once identified, the microcontroller can either correct the error or shut the device down, appropriately ensuring that the security of the wider system is not breached. Analog Devices—Designing for Reliability Analog Devices has been designing robust solutions for over 50 years that deal with these challenges. The requirement of hyper robust systems for industrial IoT is not a new one. The ADF7030-1 ultralow power, sub-GHz ISM band radio and ADuCM3029 Cortex-M3 microcontroller, target performance levels and functionality features that enable the most robust communication links. The ADF7030-1 is the industry's leading radio for receiver sensitivity performance. In many cases, the ADF7030-1 will be capable of receiving radio signals 3dB below the power of other radios. This means signal strengths of less than half the power of its competitor can still be received. With industry-leading blocking numbers in excess of 100dB, the ADF7030-1 can achieve a level of interference resilience comparable to military and aerospace equipment, without the need for additional costly external components. This increases value and ensures communication is maintained in the noisiest RF environments. Through generations of collaboration with leading industrial manufacturers, Analog Devices has well developed methods for coping with real life environmental effects on radio transceivers. As an example, the output power transmitted by a device using the ADF7030-1 varies by less than 0.2dB over the full temperature operating range. This was achieved through radio design methods unique to Analog Devices. Competing radios will vary by up to 2dB. The ADuCM3029 is designed with flash and ECC parity checks to ensure errors due to memory corruption are identified and corrected where possible. The ADuCM3029 is also equipped with battery monitoring capability in sleep mode. This ensures that unexpected drops in voltage can be detected and the processor alerted to a possible malicious threat or power supply malfunction. The end device can then take appropriate action by either alerting an administrator, or entering a safe mode to ensure the wider system is not compromised. Technologies developed by Analog Devices inhabit every stage of the IoT signal chain from sensing and measuring, to interpreting and connecting the data. Ensuring the quality and integrity of the information created through this chain is a core design principle and is a fundamental requirement to fulfill the true potential of the IoT. 23 IoT