{"id":3119,"date":"2024-03-18T16:49:06","date_gmt":"2024-03-18T08:49:06","guid":{"rendered":"http:\/\/demo.lezhan.org\/?post_type=product&p=3119"},"modified":"2026-04-13T14:26:31","modified_gmt":"2026-04-13T06:26:31","slug":"4442-card","status":"publish","type":"product","link":"https:\/\/www.dccochina.com\/es\/shop\/4442-card\/","title":{"rendered":"Fudan 4442 Contact Smart Card"},"content":{"rendered":"

Key Technical Features:<\/span><\/h3>\n

Storage Structure:<\/strong>
\n256-byte EEPROM Main Storage Area: Supports byte-level read and write operations.
\n32-bit Protection Bit Area: Each bit corresponds to one of the first 32 bytes of the main storage area; once set, it imposes permanent write protection, rendering the data unalterable.
\n4-byte Confidential Storage Area: Contains a 3-byte user password and a 1-byte error counter.<\/p>\n

Security Mechanisms:<\/strong>
\n3-Byte User Password: The initial limit for incorrect attempts is set to 3. Once this limit is reached, the card automatically locks down, permitting read operations only while prohibiting any modifications.
\nWrite operations are enabled only after successful password verification; the password itself may also be modified during the current session (changes are reset upon power loss).<\/p>\n

Electrical and Durability Parameters:<\/strong>
\nOperating Voltage: 5V
\nMax. Supply Current: 10mA
\nErase\/Write Endurance: \u2265100,000 cycles
\nData Retention: \u226510 years
\nTemperature Range: -30\u00b0C to 70\u00b0C (0\u00b0C to 70\u00b0C for select models)<\/p>\n

Communication Interface:<\/strong>
\nCompliant with the ISO\/IEC 7816-3 standard, it employs a synchronous transmission mode and communicates with read\/write devices via physical contacts.<\/p>\n

Process and Compatibility:<\/strong>
\nUtilises a 0.6-micron CMOS EEPROM process.
\nFully compatible with chips such as Siemens SLE4442, SLE5542, and Atmel AM5542, allowing for mutual interchangeability.<\/p>","protected":false},"excerpt":{"rendered":"

The Fudan FM4442 smart card is a contact-based logic-encrypted memory card chip designed by Fudan Microelectronics, widely utilized across various fields such as access control, consumer transactions, and healthcare.<\/p>","protected":false},"featured_media":3120,"template":"","meta":[],"product_cat":[98],"product_tag":[61],"class_list":["post-3119","product","type-product","status-publish","has-post-thumbnail","hentry","product_cat-contact-card","product_tag-4442-card"],"yoast_head":"\nFudan 4442 Contact Smart Card - Dcco<\/title>\n<meta name=\"description\" content=\"The 4442 card consists of a 256*8-bit EEPROM main memory and a 32-bit protected memory with PROM function, and is suitable for membership cards and gas cards.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.dccochina.com\/es\/shop\/4442-card\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Fudan 4442 Contact Smart Card - Dcco\" \/>\n<meta property=\"og:description\" content=\"The 4442 card consists of a 256*8-bit EEPROM main memory and a 32-bit protected memory with PROM function, and is suitable for membership cards and gas cards.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.dccochina.com\/es\/shop\/4442-card\/\" \/>\n<meta property=\"og:site_name\" content=\"Dcco\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-13T06:26:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.dccochina.com\/wp-content\/uploads\/2024\/03\/DSC00249-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1708\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.dccochina.com\/shop\/4442-card\/\",\"url\":\"https:\/\/www.dccochina.com\/shop\/4442-card\/\",\"name\":\"Fudan 4442 Contact Smart Card - 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