M775 vs UCODE 8

Choose M775 if you prioritize rapid inventory scanning and need 32 bits of User memory for application data. The M775 operates across 860–960 MHz and supports Impinj FastID, which accelerates tag reads in dense environments with many tags. It allocates 128 bits for EPC, 32 bits for User memory, 64 bits for TID, and 64 bits for Access and Kill passwords (32 bits each). The chip implements EPC Class 1 Gen 2 (ISO/IEC 18000-63) RAIN RFID with basic security through access and kill passwords plus TID-based chip serialization. This configuration suits high-throughput retail, logistics, and supply chain applications where read speed matters and you need modest user memory for item attributes or batch codes. Choose UCODE 8 if anti-counterfeiting and data integrity are critical requirements. Operating from 840–960 MHz, UCODE 8 supports EPC Gen2v2 with advanced security features absent in M775: a 16-bit factory-locked Brand Identifier scrambled with RN16 for authentication, Untraceable mode for consumer privacy, Memory Safeguard with ECC and parity checking, and Permalock for irreversible memory protection. The standard UCODE 8 offers 128-bit EPC with 0-bit User memory, while UCODE 8m provides 96-bit EPC with 32-bit User memory, both with 96-bit factory-locked TID and 64-bit Reserved memory (32-bit Kill and 32-bit Access passwords). The Brand Identifier and Gen2v2 Untraceable features make UCODE 8 ideal for brand protection in pharmaceuticals, luxury goods, and applications requiring supply chain authentication or post-sale privacy compliance.