ICODE SLIX2 vs ST25TV02K
ICODE SLIX2 offers 316 bytes usable memory with ECC signatures and 5-tier password security. ST25TV02K provides 256 bytes with energy harvesting output.
Side-by-side specs
Frequency
- ICODE SLIX2
- 13.56 MHz
- ST25TV02K
- 13.56 MHz
Protocol
- ICODE SLIX2
- ISO/IEC 15693-2, ISO/IEC 15693-3
- ST25TV02K
- ISO/IEC 15693, ISO/IEC 18000-3 mode 1, NFC Forum Type 5
Memory
- ICODE SLIX2
- 2560 bits user memory (80 blocks × 4 bytes; last block reserved for 16-bit counter); total 2528 bits usable user memory, 50-year retention, 100,000 write cycles
- ST25TV02K
- 256 bytes (2048 bits) EEPROM, organized in 64 blocks of 4 bytes
Interface
- ICODE SLIX2
- RF contactless (no battery needed)
- ST25TV02K
- RF (contactless), Energy Harvesting output
Temp Range
- ICODE SLIX2
- -40°C to +85°C (junction), -55°C to +125°C (storage)
- ST25TV02K
- -25°C to +85°C
Form Factor
- ICODE SLIX2
- Wafer (SL2S2602FUD/BG: 120 µm with 7 µm Polyimide spacer, bumped, on film frame), MOA8 module (SL2S2602FA8, SOT500-4), XSON3 package (SL2S2602FTB, SOT1122: 1×1.45×0.5 mm)
- ST25TV02K
- SO8, TSSOP8, UFDFPN8
Security
- ICODE SLIX2
- 32-byte ECC-based originality signature (secp128r1), unique 64-bit UID (read-only), 32-bit passwords (Read, Write, Privacy, Destroy, EAS/AFI), block-level write protection, page…
- ST25TV02K
- 32-bit password protection, lock bits, AFI (Application Family Identifier)
| Spec | ICODE SLIX2 | ST25TV02K |
|---|---|---|
| Frequency | 13.56 MHz | 13.56 MHz |
| Protocol | ISO/IEC 15693-2, ISO/IEC 15693-3 | ISO/IEC 15693, ISO/IEC 18000-3 mode 1, NFC Forum Type 5 |
| Memory | 2560 bits user memory (80 blocks × 4 bytes; last block reserved for 16-bit counter); total 2528 bits usable user memory, 50-year retention, 100,000 write cycles | 256 bytes (2048 bits) EEPROM, organized in 64 blocks of 4 bytes |
| Interface | RF contactless (no battery needed) | RF (contactless), Energy Harvesting output |
| Temp Range | -40°C to +85°C (junction), -55°C to +125°C (storage) | -25°C to +85°C |
| Form Factor | Wafer (SL2S2602FUD/BG: 120 µm with 7 µm Polyimide spacer, bumped, on film frame), MOA8 module (SL2S2602FA8, SOT500-4), XSON3 package (SL2S2602FTB, SOT1122: 1×1.45×0.5 mm) | SO8, TSSOP8, UFDFPN8 |
| Security | 32-byte ECC-based originality signature (secp128r1), unique 64-bit UID (read-only), 32-bit passwords (Read, Write, Privacy, Destroy, EAS/AFI), block-level write protection, page… | 32-bit password protection, lock bits, AFI (Application Family Identifier) |
Verdict
Choose ICODE SLIX2 if you need enhanced security features and slightly larger memory capacity. This chip provides 2528 bits (316 bytes) of usable user memory compared to ST25TV02K's 2048 bits (256 bytes), offering 60 additional bytes for data storage. The ICODE SLIX2 excels in security with a 32-byte ECC-based originality signature using secp128r1 elliptic curve cryptography, enabling product authenticity verification that the ST25TV02K lacks. It implements a sophisticated five-tier password system (Read, Write, Privacy, Destroy, EAS/AFI) with 32-bit passwords for each function, plus block-level write protection, page protection pointer, privacy mode that disables all operations except authentication, and an irreversible destroy mode. Both chips share ISO/IEC 15693-2 and 15693-3 compliance, 13.56 MHz operation, and organize memory in 4-byte blocks, with the ICODE SLIX2 offering one 16-bit counter in its last block. Memory endurance is identical at 100,000 write cycles with 50-year retention.
Choose ST25TV02K if you require energy harvesting capabilities or need NFC Forum Type 5 compatibility for broader ecosystem integration. The ST25TV02K features a dedicated energy harvesting output pin that can power external circuits or sensors from the RF field, a capability the ICODE SLIX2 does not provide. It supports ISO/IEC 18000-3 mode 1 and NFC Forum Type 5 tag specification, making it more versatile for applications requiring NFC compatibility beyond basic ISO 15693. While its security is simpler with single 32-bit password protection and lock bits rather than the multi-tier system of ICODE SLIX2, this may be adequate for many supply chain and inventory applications. The ST25TV02K includes AFI (Application Family Identifier) support like the ICODE SLIX2. Both chips operate contactlessly at 13.56 MHz and require no battery. The 60-byte memory difference (256 bytes versus 316 bytes) is marginal for most applications, so the decision primarily hinges on whether ECC authentication and advanced security features outweigh energy harvesting and NFC Forum compatibility for your specific use case.
FAQ
What is the memory difference between ICODE SLIX2 and ST25TV02K?
ICODE SLIX2 provides 2528 bits (316 bytes) of usable user memory, while ST25TV02K offers 2048 bits (256 bytes), a difference of 60 bytes. Both organize memory in 64-80 blocks of 4 bytes each with 100,000 write cycle endurance.
Does ST25TV02K or ICODE SLIX2 have better security features?
ICODE SLIX2 has significantly stronger security with 32-byte ECC-based originality signatures (secp128r1), five separate 32-bit passwords for different functions, privacy mode, and destroy mode. ST25TV02K offers only basic 32-bit password protection and lock bits without cryptographic authentication.
Which chip supports energy harvesting output?
Only the ST25TV02K provides a dedicated energy harvesting output that can power external circuits from the RF field. The ICODE SLIX2 does not include energy harvesting functionality.
Sourcing ICODE SLIX2 or ST25TV02K in volume?
Roxtron builds custom RFID and NFC products around both ICODE SLIX2 and ST25TV02K. Tell us your project — quantities, form factor, timeline — and we'll come back within 24 hours with pricing and lead times.