Memory organization:
The 4 kB EEPROM memory (MF1PLUS80x) is organized in 32 sectors of 4 blocks and in 8 sectors of 16 blocks. The 2 kB EEPROM memory (MF1PLUS60x) is organized in 32 sectors of 4 blocks.

One block consists of 16 bytes.

Mifare Plus X 4K Full Colour Printing Cards,Mifare Plus X 4K Proximity Cards,ISO 14443 A Mifare Plus X 4K Cards,

Manufacturer block:
The first data block (block 0) of the first sector (sector 0) contains the PICC manufacturer data. This block is programmed and write protected during the production test.

Data blocks:
Sectors 0D to 31D contain 3 blocks each and sectors 32D to 39D contain 15 blocks for data storage. The data blocks can be configured using the access bits as:
-read/write blocks for storing binary data.
-value blocks (only available in security level 1).
Value blocks are special counters where the stored value can be manipulated with specific commands such as MF Increment, MF Decrement and MF Transfer.
These value blocks have a fixed data format enabling error detection and correction with backup management to be performed.
The MIFARE Plus X provides two further commands which can be used to optimize performance when using value blocks. These are:
-MF Increment Decrement
-MF Decrement Transfer
A successful mutual authentication is required to allow any data operation.

Access conditions:
The access conditions for every data block and the sector trailer itself are stored in the sector trailer of the corresponding sector.
The access bits control the rights of memory operations using the secret keys A and B.
The access conditions may be altered after authentication with the relevant key and the current access condition allows this operation.
Furthermore, value blocks are configured using the access bits.

AES keys:
AES keys are not shown in the memory map. The keys are stored on top of the other data and can be updated and used by referencing the Key Number. In security level 3, anti-tearing is supported for the update of AES keys as well as for the update of the sector trailer. In security level 2, anti-tearing is supported only for the update of AES keys. This anti-tearing mechanism is done by the PICC itself. The EEPROM stays in a defined
status, even if the PICC is removed from the electromagnetic field during the write operation.
Proximity check:
The security level 3 offers a feature to verify that the PICC is in close proximity to the PCD. This functionality can be used to effectively prevent relay attacks.
The proximity check is based on a precise time measurement of challenge-response pairs in combination with cryptographic methods.
Multi-sector authentication:
A new feature has been provided in security level 2 and 3 for data which is spread over multiple sectors to improve transaction performance.
Providing that such sectors are secured with identical keys (key value and key type) only one authentication is required to read and/or write data from these sectors. There is no need to re-authenticate when accessing any data within these sectors. Therefore it is possible to configure a card in such a way that operating with only one authentication is needed in security level 3 to access all sectors. The same applies also for security level 2 authentications (one is AES-based the other one is CRYPTO1-based).

Originality function:
The originality function is implemented by an AES authentication with the originality key.
The authentication is performed in ISO/IEC 14443-4 protocol layer.