Renesas Electronics Corporation recently announced a new addition to the RX 32-bit MCU Family, the RX660 group of MCUs that supports operating voltages of up to 5V, offering superior noise tolerance for home appliances and industrial equipment exposed to high electromagnetic interference. The RX660 is the first in Renesas’ higher-end RX general-purpose MCU devices to support 5V and the first in the RX Family to feature a built-in CAN FD controller that enables fast data communication. The high operating voltages of the new RX660 MCUs eliminate the need for external noise-suppression components that are required for many 3V MCUs today. This allows customer to reduce development time and component cost, improving system quality.

In recent years, the scale of software has grown as functional safety and security have become a critical part of electronic systems. As the number of product models has also increased, more products are equipped with realtime operating systems in order to simplify software maintenance. Additionally, products need to be designed to accommodate future functional enhancements using over-the-air (OTA) updates. To meet these needs, Renesas developed the RX660 using its RXv3 core (6.00 CoreMark/MHz) with a maximum operating frequency of 120 MHz, offering high performance and excellent power efficiency. The devices feature large-capacity ROM of up to 1 megabyte (MB) and RAM of up to 128 kilobytes (KB) and are available in many package options (48-pin to 144-pin). In particular, the effective pin count for general-purpose I/O pins is 10% higher than on the earlier RX210, which is also 5V compatible. For example, the 144-pin version of the RX660 has an effective pin count of 134, 11 more than on the RX210. With this increase in I/O count, more sensors can be connected to an MCU for a given package, making it simpler to upgrade existing systems.

“Noise suppression is essential for home appliances and industrial products since ambient electromagnetic waves in the surrounding environment can cause system malfunctions or reduce performance,” said Sakae Ito, Vice President of the IoT Platform Business Division at Renesas. “We introduced the new RX660 MCUs in response to strong demand from customers who need to design products with high power supply voltages. We are happy to assist our customers to make their product design process simpler.”

“At Daikin, we have been using Renesas’ RX MCUs in our main air conditioner products for over 10 years, and we welcome the new RX660 MCUs with superior noise tolerance,” said Eisuke Yamada, Group Leader of Procurement Strategy Department, Global Procurement Division at Daikin Industries, Ltd. “The RX MCUs offer excellent CPU performance, flash memory that boosts realtime operation and scalable development with pin-compatible devices. These advantages are everything we consider essential in MCU products.”

The RX660 MCUs and development boards are available now. For more information, please visit: https://www.renesas.com/rx660.