M700 Series vs UCODE 9

Choose the Impinj M700 Series if you need flexible memory configurations or advanced Gen2v2 security features. The M700 family provides five memory variants ranging from the basic M730 (16 bytes EPC, 0 bytes user) to the M781 (16 bytes EPC, 64 bytes user) and M780 (62 bytes EPC, 16 bytes user), allowing you to match memory to application requirements. The M750, M770, M775, and M780 support Gen2v2 Untraceable and Short-range privacy modes. The M775 uniquely implements Gen2v2 Authenticate for cryptographic tag authentication, critical for anti-counterfeiting and brand protection. The M770, M775, and M780 feature Unkillable Mode to prevent accidental tag decommissioning. All variants operate at 860–960 MHz with -22 dBm sensitivity and support ISO 18000-63 and EPCglobal Gen2v2. Access and Kill passwords are shared across all models, with Impinj Protected Mode providing additional read/write security. Choose the NXP UCODE 9 if your priority is maximum read speed in dense retail environments with high tag populations. UCODE 9 is optimized for rapid inventory scanning where hundreds of tags must be read simultaneously. It operates across a slightly wider frequency range (840–960 MHz versus 860–960 MHz) and complies with EPC Gen2v2.1. Memory is fixed at 12 bytes EPC, 12 bytes TID (including a 6-byte unique serial number), and a 4-byte kill password. UCODE 9 includes Memory Safeguard with ECC and parity checking for data integrity, plus permalock to permanently lock memory blocks. However, it lacks the advanced Gen2v2 privacy features (Untraceable, Short-range, Authenticate) available in higher-tier M700 variants. For straightforward retail item tracking with standard memory needs and emphasis on throughput, UCODE 9 delivers proven performance. For applications requiring cryptographic authentication, variable memory, or enhanced privacy controls, the M700 Series provides significantly more capability.