The SLE5542 is a smart card IC that builds on the popular SLE4442, offering enhanced compatibility and security. Here are its key technical characteristics:
🧠 Memory & Security
- EEPROM Memory: 256 bytes (organized as 256 × 8 bits)
- Protection Memory: 32 × 1-bit for write protection
- Programmable Security Code (PSC): 3-byte PIN for write access
- Error Counter: Locks write access after 3 failed PSC attempts
🔐 Data Integrity & Reliability
- Anti-tearing mechanism: Protects data during power loss
- Write Endurance: 100,000 cycles
- Data Retention: Minimum 10 years
📡 Interface & Electrical
- Contact Interface: ISO/IEC 7816 compliant
- Communication Protocol: Asynchronous, T=0
- Operating Voltage: 5V ±10%
- Clock Frequency: Up to 5 MHz
🌡️ Environmental
- Operating Temperature: –25 °C to +85 °C
📏 Physical Format
- Typically embedded in ID-1 format cards (85.6 × 53.98 mm), made of PVC or composite materials
This chip is ideal for access control, loyalty programs, prepaid systems, and secure ID cards, especially where backward compatibility with SLE4442 is needed.