ib technology
Mifare 4k (4096 byte) Memory Map
(Lower 2k bytes, sectors 0-31 arranged as 32 x 4 block sectors)
16 byte Block
Byte 15
Byte 0
Block 0 (0x00)
Serial number + Manufacturer Information
Sector 0
(4 Blocks)
Block 3 (0x03)
Block 4 (0x04)
KeyA, Access bits, KeyB
KeyA, Access bits, KeyB
Sector 1
Block 7 (0x07)
40 separate
Sectors with
individual
Authentication
(Upper 2k bytes, sectors 32 - 39 arranged as 8 x 16 block sectors)
and access
control.
Block 224 (0xE0)
Sector 39
(16 Blocks)
Block 255 (0xFF)
KeyA, Access bits, KeyB
The lower 2048 bytes of the 4k card (sectors 0 – 31) are organised in the same way as the 1k
card. However the upper 2048 bytes are organised as eight large sectors of 16 blocks each
(sectors 32 – 39). Taking into account the Serial Number/Manufacturers Block and the Sector
Trailer Blocks then there are 3440 bytes of free memory for user storage.
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