Renesas releases 5V RX660 microcontroller with “superior noise tolerance”, CAN FD support


Renesas has announced a new entry in its 32-bit RX family of microcontrollers, with which it targets both smart homes and the Industrial Internet of Things (IIoT): the RX660 series, offering “superior noise tolerance” and the first integrated CAN in the FD Controller range.

“Noise suppression is essential for home appliances and industrial products, as ambient electromagnetic waves in the surrounding environment can cause system malfunctions or reduce performance,” Renesas’ Sakae Ito says of the main selling point. new chips. “We introduced the new RX660 microcontrollers in response to strong demand from customers who need to design products with high supply voltages. We are happy to help our customers simplify their product design process.

The RX660 series is built on Renesas’ RXv3 microcontroller core, offering a claimed performance of six CoreMarks per megahertz and a maximum speed of 120 MHz plus an integrated single-precision floating-point unit (FPU), as well as up to 128 KB of static RAM (SRAM) and 1 MB of flash memory. By operating down to 5V, Renesas says, parts can withstand noise levels that would cause errors in low-voltage chips — and can dispense with external noise-suppression components, reducing BOM materials overall.

Its noise tolerance isn’t the only remarkable thing about the RX660 line, however: it’s also the first in the RX line of microcontrollers to offer an integrated CAN FD (Controller Area Network Flexible Data-rate) controller, offering improved data rates over the standard. CAN networks.

For those upgrading from older 5V-capable RX models, like the RX210, Renesas promises increased general-purpose input-output (GPIO) capabilities equivalent to about 10% more pins, depending on the package: the RX660 to 144 pins offers an effective pin count of 134 pins, the company says, which is 11 pins more than the older RX210 equivalent.

Renesas has started taking orders for the RX660 range now on its official website, although the price is only available on request. For those looking for a practical example, the company has developed a design pattern for uninterruptible power supply (UPS) based on the RX660 and other Renesas components.


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