104
Section 4Data Carrier
RFID System
User's Manual
Section 4
Functions
Write Protect Setting Examples (2-Kbyte Memory Data Carrier)
(1)Settings to Write-protect Addresses 0015H to 0120H
(Start address < End address)
(2)Settings to Write-protect 1 Byte
(Start address = End address)
Specify the same address for the start and end
addresses.
(3)Settings when the End Address is Greater than the
Final Address in the Data Carrier
(End address > 07FFH)
The Data Carrier memory area is allocated from
address 0000H to 07FFH. Therefore, the addresses
up to 07FFH will be write-protected.
(4)Settings when the Start Address is Greater than the
End Address
(Start address > End address)
The area between 0006H and the end address and the
area between the start address and 07FFH are write-protected.
Canceling Write Protection
To cancel write protection, turn OFF the most significant bit of address 0002H. The write protection will
be cancelled, and the start and end addresses that are set for 0002H to 0005H will be ignored.
Address
Write-protected
area
0000
07FF
0015
0120
to
Write-protected area
1 byte
Write-protected area
0000
07FF
End address
Start address
0000
0006
07FF
Address Bit76543210
0002
1
0000000
80
(Hexa-
deci-
mal)
0003
0
0010101
15
0004
0
0000001
01
0005
0
0100000
20
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