Renesas: first RX family MCUs with CAN FD bus protocol

Posted 24 August 2022

Renesas Electronics announced a new addition to the RX 32-bit MCU Family, the RX660 group of microcontrollers (MCU) 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.

Renesas developed the RX660 using its RXv3 core (6.00 CoreMark/MHz) with a maximum operating frequency of 120 MHz, offering high performance and 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.