Rutronik adds Renesas RX65N/RX651 microcontrollers for IoT security

Renesas has expanded its RX65N/RX651 microcontroller series. They meet all the security requirements of endpoint devices in industrial automation, building automation, and smart metering systems, says the company. They also enable simple firmware updates and cost-effective human machine interfaces (HMIs), says the company. They have been to the Rutronik portfolio.

Design engineers of endpoint devices in industrial IoT systems need to meet the challenge of guaranteeing greater security and meeting more stringent connectivity requirements without compromising performance and availability.

The RX65N/RX651 standard microcontrollers from boast a Trusted Secure IP to ensure a high level of security. Through the integration of encryption hardware accelerators – such as AES, 3DES, SHA, and TRNG – and secure access, the encryption key is protected by the Trusted Secure IP. The boot code is protected by a secure Flash area. Protect and dual-bank functions prevent erroneous writing on the integrated Flash memory and enable secure program updates via the network.

The RXv2 core has a 4.55 CoreMark at 120MHz, or 4.35 at 240MHz. It is based on a 40nm process. This combination, says Rutronik, guarantees confidentiality, integrity, and availability to prevent cyber attacks.

Firmware updates, as required for industrial applications, are significantly easier and more secure with the RX65N/RX651 microcontrollers, claims Rutronik. The dual-bank Flash memory supports both background operation for self-programming of the firmware update and the SWAP function. It is possible to change the selected code Flash area at the start of a reset.

End devices in IoT are increasingly equipped with a small TFT display to enhance system monitoring and control. WQVGA colour TFT displays can be used with the RX65N/RX651 without external RAM thanks to 640-kbyte of on-chip RAM. The embedded TFT controller and the integrated 2D graphic accelerator provide

advanced performance and ease of use.

The GUI tools from the Renesas ecosystem ensure short development times. The Renesas Envision Kit provides an evaluation environment that allows design engineers to benchmark MCU performance in their application and to start developing their own software.

Renesas has also developed a new starter kit for the new microcontrollers. It includes a development board with MCU, display, on-chip debugger, trial Renesas C compiler, and integrated development environment (IDE).

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