M700 Series vs UCODE 9xm

Choose the Impinj M700 Series if you need application-specific memory configurations across a product line or require Gen2v2 Authenticate cryptographic security (M775 only). The series offers five variants: M730 (128-bit EPC, no user memory), M750 (96-bit EPC, 32-bit user), M770 (128-bit EPC, 32-bit user), M775 (128-bit EPC, 32-bit user with Authenticate), M780 (496-bit EPC, 128-bit user), and M781 (128-bit EPC, 512-bit user). All models support -22 dBm read sensitivity across 860–960 MHz. The M750, M770, M775, and M780 include Untraceable/Short-range privacy features, while the M770, M775, and M780 offer Unkillable Mode to prevent accidental tag deactivation. The M775 uniquely provides Gen2v2 Authenticate for mutual authentication and cryptographic operations, suitable for anti-counterfeiting applications. Protected Mode offers vendor-specific access control across the range. Choose the NXP UCODE 9xm if you need maximum user memory flexibility and error correction in a single SKU. This chip provides up to 752 bits of user memory with three configurable partitions: 128-bit EPC with 752-bit user, 256-bit EPC with 624-bit user, or 496-bit EPC with 384-bit user memory. The 840–960 MHz frequency range covers global UHF RAIN bands. Memory Safeguard implements error-correcting code with 2-bit failure detection, protecting data integrity in harsh industrial environments. The 96-bit TID includes a factory-locked 48-bit unique serial number for item-level identification. Brand Identifier provides a 16-bit customer-unique value factory-programmed and XOR-scrambled with RN16 for brand authentication. Blockpermalock enables permanent locking of 128-bit memory blocks. While lacking Gen2v2 Authenticate, UCODE 9xm offers standardized Untraceable for privacy and delivers robust memory performance with ECC protection.