ARM//Cortex-R

ARM's real-time profile core family — deterministic, low-latency execution for safety-critical systems.

ARM's real-time profile core family — deterministic, low-latency execution for safety-critical systems.

Found in automotive ECUs (braking, airbags), hard-drive controllers, and baseband modems.

Features tightly-coupled memory, dual-core lockstep (fault detection), and fast interrupt response.

Runs bare-metal or RTOS, not Linux.

Bridges the gap between Cortex-M and Cortex-A

LOCKSTEP: two identical cores run the same instructions and cross-check; any mismatch triggers a fault.

Zero jitter; applications: ABS brakes, airbags, flight control, dialysis machines.

Does not support a full OS; bare-metal or RTOS only.