RFID Programming Manual
Ver.01.10
- 5 -
2-4 EPC GEN2 Chip Memory Structure
The memory structure of the EPC GEN2 chip is detailed in the chart below.
GEN2 (EPC Class 1 Generation 2 ) Tag Memory Allocation
MEM
BANK
MEM
BANK
NAME
MEM
BANK BIT
ADDRESS
BIT NUMBER
R/W
ADDRESS
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
10
TID
(ROM)
0x10
– 0x1F 0 0
0
1
MODEL NUMBER
2,3
0x00
– 0x0F 1 1
1
0
0
0 1 0 0 0 0 0 0 0 0 0
0,1
01
EPC
(NVM)
0x70
– 0x7F
EPC[15:0]
14,15
0x60
– 0x6F
EPC[31:16]
12,13
0x50
– 0x5F
EPC[47:32]
10,11
0x40
– 0x4F
EPC[63:48]
8,9
0x30
– 0x3F
EPC[79:64]
6,7
0x20
– 0x2F
EPC[95:80]
4,5
0x10
– 0x1F
PROTOCOL-CONTROL BITS (PC)
2,3
0x00
– 0x0F
CRC-16
0,1
00
RESERVED
(NVM)
0x30
– 0x3F
ACCESS PASSWORD[15:0]
6,7
0x20
– 0x2F
ACCESS PASSWORD[31:16]
4,5
0x10
– 0x1F
KILL PASSWORD[15:0]
2,3
0x00
– 0x0F
KILL PASSWORD[31:16]
0,1
1) The MEM BANK consists of 00 (Reserved), 01 (EPC), and 10 (TID), and may include a
User Memory Field equipped tag in the case of special chips.
2) The RESERVED Field is designed for security purposes and the storage of an Access
Password (4Byte) and a Kill Password (4Byte), whose default values are both saved as
00 00 00 00.
3) The TID Field contains the unique manufacturer ID data encoded and shipped by the
manufacturer, and is not for use by regular users.
4) The EPC Field consists of 0~15 totaling 16 bytes, with 4~15 totaling 12 bytes available
for the input of data desired by the user, and 0~3 totaling 4 bytes containing the CRC-16
and PC (Protocol Control) that must not be modified at will by the user.
5) To read/write data in the EPC Address, the >RFW command can be used.
Ex.) If the first block number=10 and the number of blocks=6, reading/writing of the EPC
Address 10~15 can be done.
