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SLE5528 secure card
 
EUR 4.00
Infineon SLE5528 based blank white card, contains 1024 x 8 bits of EEPROM with programmable write protection for each byte.

Completely backward compatible to IS23SC4428 / SLE4428 based cards, but with added security.
Random read access to any byte in the memory is always possible. The memory can also be erased and written byte by byte. Erasing old data in the byte location must be performed before new data can be written to the location. Each byte in the memory has a corresponding protect bit. The protect bits are only one-time programmable and cannot be erased.
After the protect bits are enabled (logic 0), the corresponding bytes can never be changed again. A write-protect bit with data-compare function is available for user to verify the data in the memory before enabling the protect bit.

In addition, it offers two bytes of Programmable Security Code (PSC) against unauthorized memory write/erase operations. All the memory, except for the PSC can always be read, but the memory can be written or erased only after PSC verification. If the user fails to enter the correct PSC in eight consecutive attempts, the device will block any further PSC entry attempts and the memory can never be erased or written again.

The PSC bytes are pre-programmed by the manufacturer with a code, which is specified for the customer for device transport security purposes, before the devices are shipped to the customer. The Error Counter will be pre-erased by the manufacturer to allow maximum attempts (maximum of eight) for PSC entry.

Download:
Product brief
Full datasheet

This card is very suitable for high-volume applications (contact us for volume quotes).
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