Ultralight EV1 (48 Byte) vs. ICODE SLIX2
These two chips, the Ultralight EV1 (48 Byte) and the ICODE SLIX2 are from different NFC chip families. The Ultralight EV1 (48 Byte), manufactured by NXP belonging to the MIFARE family, and the ICODE SLIX2, also manufactured by NXP.
The NXP MIFARE Ultralight® EV1 is a updated version of the very popular Ultralight chip from NXP. The original Ultralight chip dates back to 2001 and the product has been used for ticketing the world over. It’s a very simple, reliable and cost effective product. Unfortunately, there’s probably almost as many non-genuine MIFARE Ultralight chips as genuine ones. The EV1 update added an originality check feature to help counteract this.
There are two variants of the Ultralight EV1 with two memory capacities. The smaller chip has 48 bytes of usable memory (similar to the NTAG210 and NTAG210micro) and the larger has 128 bytes (similar to the NTAG212).
The ICODE SLIX is part of NXP's ICODE family of chips. The ICODE series is older than NXP's NTAG series and has a number of significant differences - particularly a longer 8 byte UID and a longer memory retention specification of 50 years. However, this ICODE SLIX2 variant is newer and contains a large numebr of feature enhancements.
Generally, these chips are not commonly used in mobile phone NFC applications. While they are similar in cost to the NTAG series, Seritag generally recommend NTAG unless the additional specified memory retention lifespan is specifically required. The ICODE chips are not available in as many formats as the NTAG chips and are typically made to order.
Both these chips have a strong ScanStrength and will work very well with mobile phones.
Key Features
Key Specifications
| Brand | NXP |
| Chip Series | MIFARE |
| NFC Forum | Type 2 |
| Availability | High |
| ScanStrength | High |
| Brand | NXP |
| Chip Series | ICODE |
| NFC Forum | Type 5 |
| Availability | Medium |
| ScanStrength | High |
Phone compatibility
Typical Use Cases
- Single Use Vouchers
- Transport Ticketing
- Event Ticketing
- Marketing
- Libraries
- Item tagging
- Counterfeit protection
- Asset marking
User Features
| Ultralight EV1 (48 Byte) | ICODE SLIX2 | |
|---|---|---|
| Total memory (bytes) | 80 | 316 |
| User memory (bytes) | 48 | 320 |
| Max URL (chars) | 40 | 250 |
| UID (bytes) | 7 | 8 |
| ECC signature | ||
| 32-bit password | ||
| UID ASCII mirror | - | - |
| Scan Counter | - | |
| Counter ASCII mirror | - | - |
| Lockable |
Technical Specifications
| Ultralight EV1 (48 Byte) | ICODE SLIX2 | |
|---|---|---|
| Chip thickness | 75 µm / 120 µm | 120 μm |
| NFC Forum | Type 2 | Type 5 |
| Operating Freq. | 13.56Mhz | 13.56Mhz |
| Data Trans. Rate | 106 kbit/s | 53 kbit/s |
| Input Capacitance | 17pF / 50pF | 23.5 pf |
| Fast read | ||
| Data retention (years) | 10 | 50 |
| Write endurance (cycles) | 100000 | 100000 |
| Anticollision | - | - |
| Standard | ISO/IEC 14443 A | ISO/IEC 15693 |
| Release date | 2013 | 2016 |
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