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Infineon at Hot Chips 2026 argued that RISC-V is the ideal ISA for automotive zone controllers to avoid IP lock-in, but stressed that market success hinges on auto-qualified toolchains, SoC architecture, and ecosystem enablement rather than the instruction set alone. The talk addressed the compute demands facing automotive microcontrollers, where chassis, powertrain, and ADAS applications require real-time low latency, power efficiency, security, and functional safety on a single part. Infineon detailed the architectural shift from domain controllers to zone control units and eventually full car computers, consolidating body and comfort functions to reduce wiring harness weight and cost. Real-time requirements vary: fast control loops like E-motor control need deadlines under 10 ms and nanosecond interrupt latencies, while strategic functions tolerate seconds. For zone architecture, Infineon favors Path A—optimized multi-domain zone controllers with local intelligence and power distribution—over Path B’s low-complexity I/O aggregators. This approach shrinks attack surfaces, eases maintenance, and cuts system cost. Zone controllers must handle heterogeneous workloads: real-time control, DSP, AI inference, low-power services, and audio processing. Super-integrated zone controllers add an MPU island to offload non-real-time tasks, enabling faster boot and scaling from L2 to L2+ and L3. Infineon promotes RISC-V for its open, scalable ISA that avoids IP lock-in and enables ecosystem synergies across automotive, IoT, and industrial use. Standardization requires unified profiles (e.g., RV32E with optional supervisor mode, vectors, hypervisor). However, Infineon notes that ISA details matter less than microarchitectural optimization; memory, connectivity, BOM cost, and automotive-qualified toolchains determine success. Long-term RISC-V adoption in zone controllers depends on standardized hardware-software interfaces and toolchain support.