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MFPROT_LP bảng dữ liệu(PDF) 24 Page - rfsolutions.ltd |
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MFPROT_LP bảng dữ liệu(HTML) 24 Page - rfsolutions.ltd |
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24 / 35 page ![]() ib technology 24 Mifare 1k (1024 byte) Memory Map 1024 byte memory is organised as sixteen sectors, each of which is made up of four blocks and each block is 16 bytes long. The first block in the memory (Block 0) is read-only and is set in the factory to contain the four-byte serial number (UID), check bytes and manufacturers data. The last block of each sector (Blocks 3, 7, 11, 15……59, 63) is the Sector Trailer Block which contains the two security Key codes (KeyA and KeyB) and the Access bits that define how the sector can be accessed Taking into account the Serial Number/Manufacturers Block and the Sector Trailer Blocks then there are 752 bytes of free memory for user storage. For all Read and Write operations the Mifare card memory is addressed by Block number (in hexadecimal format). Serial number + Manufacturer Information KeyA, Access bits, KeyB KeyA, Access bits, KeyB KeyA, Access bits, KeyB KeyA, Access bits, KeyB Sector 0 Sector 1 16 byte Block Byte 0 Byte 15 Block 0 (0x00) Sector 14 Sector 15 16 separate Sectors with individual Authentication and access control. Block 4 (0x04) Block 56 (0x38) Block 60 (0x3C) Block 3 (0x03) Block 7 (0x07) Block 59 (0x3B) Block 63 (0x3F) |
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