The SLE5528 is a contact chip memory card with 1K-byte EEPROM, designed for secure data storage and authentication. It is widely used in access control, payment systems, and identification applications.

Key Technical Specifications:

• Memory: 1,024 bytes EEPROM, organized into 1024 × 8-bit.
• Security Features:
  • Byte-wise write protection for data memory.
  • 2-byte Programmable Security Code (PSC) for access control.
  • Error counter: After eight incorrect PSC attempts, the card blocks further access.
• Communication Interface: Serial transmission protocol.
• Operating Voltage: 5V.
• Write Endurance: 100,000 cycles.
• Data Retention: 10 years.
• Applications: Used in payment systems, access control, ID cards, and transportation systems.