The EMSA5-FS is a 32-bit embedded RISC-V processor from CAST designed with functional safety in mind, aimed specifically at mission-critical applications. This processor supports ISO 26262 ASIL-D compliance, a stringent safety standard required in automotive, industrial, and medical sectors. Key features include dual/triple modular redundancy, lockstep operations, and error-correcting code (ECC) protection, making it a robust choice for systems demanding high reliability and safety assurance. The EMSA5-FS processor not only satisfies functional safety requirements but also delivers competitive performance with low power draw, addressing the needs of applications where both efficiency and system integrity are critical.