User Manual

IUH-F192-V1-*
Product Description
2022-11
11
3.2.3 Tag Memory Structure
The memory of an EPC Gen2 (ISO/IEC 18000-63) tag is split into four memory banks. The main
contents of these memory banks are:
Bank 00: RESERVED
Bank 00 contains the password management information. It comprises the access password
and the kill password. This area is available depending on the chip type.
Bank 01: UII/EPC
In addition to the Unique Item Identifier (UII), Bank 01 contains a calculated checksum CRC
(Cyclic Redundancy Check) for verifying data on the tag and the protocol control (PC) area.
The PC area contains:
• The length of the UII
• The Application Family Identifier (AFI) field
• A bit switch for an EPC sequence of numbers in accordance with ISO in Bank 01
• A bit switch for data stored in Bank 11, if available
Bank 10: TID
Bank 10 contains the tag identifier (TID), consisting of the part number and optional serial
number of the tag. This data is permanently stored without being changed. The first byte
denotes the class of the tag with E0
hex
, E2
hex
, or E3
hex
. The rest of the TID depends on the
class, and can be derived from standard ISO/IEC 18000-63.
For example:
All tags with the class EPC Gen2 (ISO/IEC 18000-63) are marked with E2
hex
. The TID is com-
prised as follows:
Memory
bank Storage type Memory blocks
Bank 00
(00
bin
= 0
dec
)
RESERVED Password management
Bank 01
(01
bin
= 1
dec
)
UII/EPC Unique Item Identifier (UII)
Electronic Product Code (EPC)
Bank 10
(10
bin
= 2
dec
)
TID Tag ID (TID)
Bank 11
(11
bin
= 3
dec
)
USER User memory
USER
TID
UII/EPC
RESERVED
Bank 10
Bank 01
Bank 00
Bank 11
Memory
Bank
Memory
Type
Memory
Blocks
User Data
TID
Manufacturer
Electronic Product Code
Protocol Control
CRC
Access Password
Kill Password