4442 card

Descripción

The Fudan FM4442 is a secure contact memory card chip featuring a 256 × 8-bit EEPROM and 32-bit protection memory with PROM functionality. Designed for reliable data protection and flexible memory management, it is ideal for membership cards, hotel key cards, and secure access control systems. The chip allows irreversible write protection of the first 32 bytes, ensuring permanent data security.

Key Features

256 × 8 bits EEPROM with >100,000 read/write cycles

32-bit protection memory with PROM-based permanent write protection

Byte-by-byte erase and write capability for flexible data handling

Linked protection bits for each of the first 32 bytes

8 years of data retention

CR80 standard size (86×54mm), customizable with PVC, PET, PET-G, or PC materials

ISO 7816 contact configuration, compatible with most standard IC card readers

Application areas

Membership Card, Hotel Key Card, Fuel card, Cashless Payment Card, Game Card, Access control card, Public Transportation Card, etc.

FAQ

Q: Is the FM4442 card compatible with standard IC card readers?
A: Yes, it is fully compliant with ISO 7816 and works with most synchronous contact card readers.

Q: Can I write data to the card multiple times?
A: Yes. The EEPROM supports over 100,000 read/write cycles. However, the first 32 bytes can be permanently locked using PROM functionality.

Q: What’s the difference between FM4442 and SLE4442?
A: FM4442 is a compatible alternative to SLE4442, offering the same memory structure and behavior at a more cost-effective price.