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HF 13.56 MHzInfineon

NRG SLE 66R35E7

Intelligent 1 kByte memory chip with ISO/IEC 14443-3 Type A, CRYPTO1 and 7-byte UID.

Official Datasheet ↗
Frequency
13.56 MHz
Protocol
ISO/IEC 14443-2 and -3 Type A with CRYPTO1
Memory
1 kByte EEPROM (16 sectors × 4 blocks × 16 bytes)
Interface
RF (contactless)
Temp Range
-25°C to +70°C (chip ambient)
Form Factor
Die (wafer sawn/unsawn), NiAu-bump die, MCC8-2-6 module

Full Specifications

ManufacturerInfineon
Frequency CategoryHF 13.56 MHz
Frequency13.56 MHz
ProtocolISO/IEC 14443-2 and -3 Type A with CRYPTO1
Memory1 kByte EEPROM (16 sectors × 4 blocks × 16 bytes)
InterfaceRF (contactless)
Temperature Range-25°C to +70°C (chip ambient)
Form FactorDie (wafer sawn/unsawn), NiAu-bump die, MCC8-2-6 module
SecurityCRYPTO1 encryption, 48-bit key (Key A and Key B per sector), mutual three-pass authentication, 7-byte UID (or 4-byte RND-ID/FNUID configurable)

Engineering Brief

The NRG SLE 66R35E7 is a 1 kByte EEPROM NFC chip compliant with ISO/IEC 14443-3 Type A at 13.56 MHz and 106 kbit/s. It features a 7-byte unique identifier (UID) with configurable UID modes (including 4-byte RND-ID or FNUID for legacy system compatibility) and CRYPTO1 mutual authentication with per-sector key management (Key A/B). Memory is organized into 16 sectors with user-definable access conditions, dedicated value blocks for increment/decrement operations, and supports >100,000 erase/write cycles with >10 years data retention. Targeted at transport, access control, and electronic purse applications requiring basic security and multi-application support.

Typical Applications

  • Public transport ticketing
  • Access control and identification
  • Electronic purse and loyalty cards
  • Event ticketing
  • Multi-application smart cards

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