ib technology

25

Mifare 4k (4096 byte) Memory Map

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.

Serial number + Manufacturer Information

KeyA, Access bits, KeyB

KeyA, Access bits, KeyB

KeyA, Access bits, KeyB

Sector 0

(4 Blocks)

Sector 1

16 byte Block

Byte 0

Byte 15

Block 0 (0x00)

Sector 39

(16 Blocks)

Block 4 (0x04)

Block 224 (0xE0)

Block 3 (0x03)

Block 7 (0x07)

Block 255 (0xFF)

(Upper 2k bytes, sectors 32 - 39 arranged as 8 x 16 block sectors)

(Lower 2k bytes, sectors 0-31 arranged as 32 x 4 block sectors)

40 separate

Sectors with

individual

Authentication

and access

control.