SLE 4442 provides a security code logic which controls the write/erase access to the memory. For this purpose the SLE 4442 contains a 4-byte security memory with an Error Counter EC (bit 0 to bit 2) and 3 bytes reference data. These 3 bytes as a whole are called Programmable Security Code (PSC). After power on the whole memory, except for the reference data, can only be read. Only after a successful comparison of verification data with the internal reference data the memory has the identical access functionality of the SLE 4432 until the power is switched off. After three successive unsuccessful comparisons the Error Counter blocks any subsequent attempt, and hence any possibility to write and erase. The SLE 4432 consists of 256 x 8 bit EEPROM main memory and a 32-bit protection memory with PROM functionality. The main memory is erased and written byte by byte. When erased, all 8 bits of a data byte are set to logical one. When written, the information in the individual EEPROM cells is, according to the input data, altered bit by bit to logical zeros (logical AND between the old and the new data in the EEPROM).

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SLE-4442 Secure Memory Card is one of the most popular "Smart Memory Cards" in the world.  This chip includes an intelligent 256-Byte EEPROM with Write Protect Function and Programmable Security Code (PSC).  This chip contains and EEPROM organized 1024 x 8 bit offering the possibility of programmable write protection for each byte. Reading of the whole memory is always possible. The memory can be written and erased byte by byte. SLE4442 Secure Memory Card, SLE4442 Secure Memory Card, SLE4442 Contact Memory Card, SLE4442 ID Memory Card, SLE4442 Access Card, SLE4442 Hotel Room Card  

Blank or Printed Cards, Key Fobs, Wristband, Round Coin Tags & RFID Labels; We will offer you the Best Possible Pricing! Up to 65% OFF. 

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