KSEC Tagbase

Our RFID & NFC Knowledge Base

Version 1.3.1


The UCODE HSL IC, SL3ICS3001 (UCODE High frequency Smart Label) is a dedicated chip for passive smart tags and labels, especially for supply chain management and logistics applications in the US, where operating distances of several meters can be realized. Further, the UCODE HSL technology platform is also designed for operation under European regulations.

This integrated circuit is the first member of a product family of smart label ICs targeted to be compliant with the future ISO standards 18000-4 and 18000-6 for item management. The UCODE HSL system offers the possibility of operating labels simultaneously in the field of the interrogator antenna (Anticollision, Collision Arbitration).

The UCODE HSL family of ICs is especially designed for long range applications.

The tag requires no internal power supply. Its contactless interface generates the power supply via the antenna circuit by propagative energy transmission from the interrogator (read/write device), while the system clock is generated by an on-board oscillator. The contactless interface demodulates data transmitted from the interrogator to the UCODE HSL based tag, and further modulates the electromagnetic field provided by the interrogator for data transmission from the UCODE HSL based tag to the interrogator.

A generic RFID system consists of an interrogator (base station) that runs the RFID protocol, as well as one or more tags. The tag itself includes an SL3ICS3001 chip and an antenna tuned to the carrier frequency of the interrogator, and a package to hold the chip and antenna together.

When placed in the RF field of an interrogator, a SL3ICS3001 based tag will begin to power up. If the field is strong enough, the tag IC will execute a power-on reset and will be ready to receive commands. Each command begins with a preamble and start delimiter that, taken together, enable the tag to perform clock and data recovery on the incoming signal. Data to and from the tag is checked for errors using a CRC. Therefore, CRC fields are present in all interrogator commands and in all tag responses. Additional data protection is provided by Manchester encoding on the forward (interrogator to tag) link and FM0 encoding on the return (tag to interrogator) link.

The interrogator can perform a number of functions on tags in its field. For example, the interrogator can send a command sequence, which allows it to identify multiple tags in its RF field simultaneously. Alternatively, it can select a subset of the tags in the field based on tag memory contents. It can also read data stored on a tag in its field, as well as write data to such a tag. In addition, it can simultaneously write data to an arbitrary subset of the tags in the field.

Signals enter the chip through the RF front end, where both tag power and the modulation envelope are recovered. Tag power is regulated and bias voltages are generated in one part of the analog section. In another part of the analog section, the modulation envelope is applied to a clock and data recovery circuit. In the case of a valid command, the first part of the input signal is the preamble and start delimiter, which will be followed by a specific tag command and any additional fields that command may require. All valid digital data is processed in the digital section data path, which is controlled by the digital control module. If a read or write is to be executed, the EEPROM block will be accessed. If data is to be sent from the tag to the interrogator in response to the command, the digital section sends the output pattern back to the RF front end, where the impedance modulation that constitutes backscatter is executed.

Features and benefits 
RF interface features
  • Contactless transmission of data and supply energy (no battery needed)
  • Operating distance, depending on antenna geometry and local regulations, up to 8.4 m for a single antenna
  • Operating frequency within the released operating bands from 860 MHz to 960 MHz and from 2.4 GHz to 2.5 GHz
  • High data integrity: 16 bit CRC, framing
  • True anticollision for collision arbitration
  • Write distance is 70% of reading distance

Memory features

  • 2048 bits including lock bits
  • 64 bits UID in memory bytes 0 to 7
  • 216 bytes with user definable access conditions for memory bytes 8 to 223

Security features

  • Unique serial number for each device
  • Lock mechanism (write protection) for each byte

Operating distances featuresRmax …maximum achieved operating distance for a lossless, matched λ/2-dipole. The maximum write distance is around 70% of the read distance.

Air interface standardsThe SL3ICS30 is fully supporting standardization on air interfaces. The SL3ICS30 is targeted to be compliant with the following air interfaces:

  • ISO 18000-4
    • Information Technology – Radio Frequency Identification (RFID) for Item Management – Part 4: Parameters for Air Interface Communications at 2.45 GHz
  • ISO 18000-6
    • Information Technology – Radio Frequency Identification (RFID) for Item Management – Part 6: Parameters for Air Interface Communications at 860 – 930 MHz
  • ANSI/INCITS 256-2001
    • Radio Frequency Identification (RFID) Part 3 – 2.45 GHz
  • ANSI/INCITS 256-2001
    • Radio Frequency Identification (RFID) Part 4 – UHF

Application standardsThe SL3ICS30 is also fully supporting application standardization. The SL3ICS30 is targeted to be compliant with the following application standards

  • MH10.8.4
    • Radio Frequency Identification for Returnable Containers and Cable Reels
  • AIAG B-11
    • Automotive Tire and Wheel Label Radio Frequency (RFID) Identification Standard
    • Global tag initiative
  • ISO 18185
    • Freight Containers – Radio-frequency communication protocol for electronic seal
  • Asset management
  • Supply chain management
  • Item level tagging
  • Container identification
  • Pallet and case tracking
  • Product authentication
  • Windshield tagging


Total Memory        
Size [bit] 2048 bit 512 bit 368 bit 880 bit
Write Endurance [cycles] 100 000 100 000 100 000 100 000
Data Retention [yrs] 10 10 50 50
Organisation 64 blocks á 4 bytes 32 blocks á 2 bytes 23 blocks á 2 bytes 55 blocks á 4 bytes
According to ISO18000-6B EPC Class 1 Gen2 EPC Class 1 Gen2 EPC Class 1 Gen2
Frequency UHF/2.4 GHz 860 – 960 MHz 860 – 960 MHz 860 – 960 MHz
Baudrate [kbit/s] up to 40 up to 640 up to 640 up to 640
Anticollision binary tree slotted ALOHA slotted ALOHA slotted ALOHA
Operating Distance [m] up to 7 up to 7 up to 10 up to 10
Unique Serial Number [byte] 8 TID:64 bit incl. 32 bit
serial number
TID:64 bit incl. 32 bit
serial number
TID:64 bit incl. 32 bit
serial number
Write Protection bytewise bytewise bytewise bytewise
Access Keys  - 32-bit 32-bit 32-bit
Access Conditions  - Plain, Write
Plain, Write
Plain, Write
Encryption Algorithm  -  -  -  -
Special Features        
EAS  - yes yes yes
AFI yes  -  -  -
EPC  - 96 bit 240 bit 240 bit
TTF Modes  -  -  -  -
Destroy Command  - yes yes yes
Privacy Command  -  - yes, Read Protect yes, Read Protect
Sawn Wafer  -  -  -  -
Sawn Wafer (Au-Bumped) SL3ICS3001FW/V4 SL3ICS1001FW/
Other Packages TSSOP8 FCP2, TSSOP8 FCS2-Al, FCS2-Cu,
SOT-1122, TSSOP8
FCS2-Al, FCS2-Cu,
SOT-1122, TSSOP8