The BA51 is a deeply embedded, ultra-low-power RISC-V processor designed for energy-sensitive applications such as IoT devices. With a single-issue, in-order, 2-stage pipeline, the BA51 achieves excellent energy efficiency, operating with less than 16k gates. This processor is capable of running at frequencies over 500 MHz at 16nm, delivering substantial performance for applications needing minimal power consumption and processing power.\n\nAdvanced power management techniques, including dynamic clock gating and frequency scaling, are integrated into the BA51 to further optimize power usage, making it ideal for prolonged battery-operated devices. Additionally, the processor supports an optional L0 cache, enhancing performance where required.\n\nThe BA51's architecture supports the RV32 base integer or embedded ISA and extensions such as RV32[I/E][C][M], ensuring adaptability to various application needs. This flexibility, combined with its efficient design, makes the BA51 a compelling choice for developers focusing on cost-effective and power-sensitive solutions.