UCODE® 7xm-1k, 7xm-2k and 7xm+


Product Details

Block Diagram

UCODE 7xm Block Diagram

UCODE 7xm Block Diagram


  • Read sensitivity -19 dBm
  • Write sensitivity -12 dBm
  • Encoding speed: 32 bits per 1.5 milliseconds
  • Up to 2-kbit user memory
  • Digital signature
  • Standard functionality
    • Untraceable feature
    • Tag Power Indicator
    • Pre-serialization for 96-bit EPC
    • Integrated Product Status Flag (PSF)
    • Parallel encoding mode
  • According to EPCglobal v1.2.0
  • Compatible with single-slit antenna
  • Up to 448-bit of EPC memory
  • Supports Pre-serialization for 96-bit EPC
  • 96-bit Tag IDentifier (TID) factory locked
  • 48-bit unique serial number factory-encoded into TID
  • 1-kbit user memory for UCODE 7xm
  • 2-kbit user memory for UCODE 7xm+
  • 384-bit digital signature in UCODE 7xm+
  • 32-bit kill password to permanently disable the tag
  • 32-bit access password
  • Wide operating temperature range: -40 °C up to +85 °C
  • Minimum 100.000 write cycle endurance
  • Data retention 20 years
  • Extended user memory of up to 2-kbit
  • Brand protection feature using digital signature
  • Long read/write ranges due to leading edge chip sensitivity
  • Reliable operation in dense reader and noisy environments through high interference rejection
  • High sensitivity enables smaller and cost efficient antenna designs
  • Selected chip impedance enables re-use of antenna designs from UCODE 7
  • Large RF pad-to-pad distance to ease antenna design
  • Symmetric RF inputs are less sensitive to process variation
  • Single-slit antenna for a more mechanically stable antenna connection
  • Pre-serialization of the 96-bit EPC
  • Fast encoding of the EPC content
  • All mandatory commands of EPCglobal v1.2.0 specification are implemented
  • The following optional commands are implemented:
    • Access
    • BlockPermalock (block size of 256-bit)
    • 32-bit BlockWrite
  • Implemented custom commands and features:
    • Untraceable
    • ReadSignature
    • Product Status Flag bit: enables the UHF RFID tag to be used as EAS (Electronic Article Surveillance) tag without the need for a back-end data base.
    • Tag Power Indicator: enables the reader to select only ICs/tags that have enough power to be written to.
    • Parallel encoding: allows for the ability to bring (multiple) tag(s) quickly to the OPEN state and hence allowing single tags to be identified simply, without timing restrictions, or multiple tags to be e.g. written to at the same time, considerably reducing the encoding process

Part numbers include: SL3S1004FUD, SL3S1014FUD, SL3S1024FUD.


Quick reference to our documentation types.

3 documents


1 hardware offering


2 software offerings

Engineering Services

5 engineering services

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