Commands
20
13
-0
3
71
Extended commands for type IQC-... read/write tags.
Single Write Words with Lock (SL)
Command:
Response:
This command works in the same way as a normal write command. Once writing
is completed, the data from before the overwriting process is protected, providing
that the read/write tags offer this function.
This applies for 21, 22, 24 and 33 type 13.56 MHz read/write tags as well as for
IDC-
…
-1K LF read/write tags. Write protection is only activated for memory blocks
involved in the writing process. Data can continue to be written to all other
memory blocks.
The read/write head makes one attempt to write <WordNum> 32-bit words from
the address <WordAddr>.
Byte
Content
Bit no.
7
6
5
4
3
2
1
0
Byte 0
Command code (47h)
0
1
0
0
0
1
1
1
Byte 1
Word number/ident channel/toggle bit
<WordNum>
<Channel>
<T>
Byte 2
Word address
<WordAddr> (high byte)
Byte 3
Word address
<WordAddr> (low byte)
Byte 4
Data for 00h to FFh
<Data>
Byte 5
Data for 00h to FFh
<Data>
...
Data for 00h to FFh
<Data>
Byte N
1)
Data for 00h to FFh
<Data>
Table 7.9
1) N = 4 x <WordNum> + 3
Byte
Content
Bit no.
7
6
5
4
3
2
1
0
Byte 0
Command code (47h)
0
1
0
0
0
1
1
1
Byte 1
Word number/ident channel/toggle bit
<WordNum>
<Channel>
<T>
Byte 2
State
<Status>
Byte 3
Reply counter
<ReplyCounter>
Byte 4
Not used
-
-
-
-
-
-
-
-
Byte 5
Not used
-
-
-
-
-
-
-
-
Byte 6
Not used
-
-
-
-
-
-
-
-
Byte 7
Not used
-
-
-
-
-
-
-
-
