User's Manual

ACG HF Multi ISO RFID Reader V1.0
ACG Identification Technologies GmbH 28
7.2 Memory organization
An ISO15693 tag is separated into two blocks. An administrative block which
contains the UID, AFI, DSFID and the lock page state. The user block is free for
custom use. The chip manufacturer defines the amount of bytes and number of
pages of each tag. As default four bytes are used for several tags.
Byte
Page
address
0 1 2 3
3Fh User data
… …
00h User data
Administrative block
Figure 7-3: Memory organization of ISO 15693