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Mifare® PLUS 4K 
The MIFARE ® Plus provides end-user solution providers with a seamless upgrade of existing infrastructure and services with low cost procedures. This new MIFARE product has been developed and supported by card and reader manufacturers and solution developers, and is the only MIFARE Classic-compatible mainstream smart card IC featuring pre-issuance of cards prior to infrastructure changes.
Key Features
4 Kbytes EEPROM
Simple fixed memory structure compatible with MIFARE Classic (MIFARE Mini, MIFARE 1K, MIFARE 4K)
Memory structure as in MIFARE 4k (sectors, blocks)
Unique serial number (4 or 7 byte)
Multi-sector authentication
Multi-block read
Anti-tear function for writing AES keys
Keys can be stored as MIFARE Classic keys (2 x 48 bit per sector) or AES keys (2 x 128 bit per sector)
Access conditions freely configurable
Number of single write operations: 200,000
MIFARE® Standard
Interface: ISO14443A
Datasheet: Mifare® PLUS 4K
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