32-bit MCUs operate to 5V, offer superior noise tolerance

32-bit MCUs operate to 5V, offer superior noise tolerance

New Products |
By Rich Pell

Renesas Electronics announced a new addition to its RX 32-bit MCU Family, the RX660 group of microcontrollers (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 offered as the first in the company’s 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 RX660 MCUs eliminate the need for external noise-suppression components that are required for many 3V MCUs today. This allows reduced development time and component cost, improving system quality.

In recent years, says the company, 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 real-time 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, the company says it 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,” says 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.”

The RX660’s integrated CAN FD controller supports fast, high-volume data transfer. CAN FD allows security signals in large volume to be transmitted in a single frame, making it possible to build stronger security into devices.

Two development boards are available for the RX660 group for both prototyping and detailed evaluation. The Target Board for RX660 is an inexpensive prototyping board that enables users to easily transform their ideas into working hardware and software. The Renesas Starter Kit for RX660 is intended for detailed evaluation and allows users to make use of the full functionality of the RX660 when developing applications.

The company has combined the RX660 with a variety of analog and power management devices for power conversion systems to create the “On-line Type UPS (Uninterruptible Power Supply) Winning Combination.” The solution efficiently integrates all the key power conversion components including inverters, buck regulators, battery boost regulators, and PFC in a single chip, and offers the ability to remotely monitor activities via Bluetooth.

The RX660 MCUs and development boards are available now.

Renesas Electronics

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