MultiZone® Security provides hardware-enforced, software-defined separation of multiple trusted execution environments. It is a complete RA Ready solution that shields critical functionality from non-verified third-party components, and protects the entire platform from remote attacks.


  • Integrated with Flexible Software Package (FSP) on the Renesas RA6M3 Group of 32-bit MCUs
  • Safe and quick way to add security through isolation - Trusted execution environment
  • Easy retrofit of existing hardware and software - No redesign
  • Multiple equally secure isolated domains (zones) - RAM, ROM, I/O, Irq handlers
  • Hardware-enforced - Software-defined, policy-driven RWX
  • Extremely lightweight: Codebase ~ 2KB – Formally verifiable


  • Wearables
  • Industrial
  • Mobile
  • IoT
  • Automotive
  • Smart home/Appliances

Documentation & Downloads

Title Other Languages Type Format File Size Date
Application Notes & White Papers
MultiZone Security for Arm Cortex-M White Paper PDF 464 KB
Hex-Five Multizone® Security FAQ for Arm® Platforms Other PDF 159 KB
MultiZone® Security Presentations PDF 1.53 MB
HEX-Five MultiZone® Security Product Brief PDF 370 KB

Software / Tools

Title Type Description Company
Flexible Software Package (FSP) Software Package The Renesas RA Flexible Software Package (FSP) provides a quick and versatile way to build secure connected Internet of Things (IoT) devices using the Renesas RA Family of Arm microcontrollers (MCUs). FSP provides production ready peripheral drivers, FreeRTOS and middleware stacks to take advantage of the FSP ecosystem. Renesas