NXP Semiconductors
SL2S2602
ICODE SLIX2
SL2S2602 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2017. All rights reserved.
Product data sheet Rev. 4.1 — 25 July 2017
COMPANY PUBLIC 276341 38 / 55
Byte Name Value Description
2 - 0x00 RFU
0x00 Incrementing of the counter value is not password
protected
3 PROT
0x01 Incrementing of the counter value is protect with the
read password
The counter can be preset to a start value with a WRITE SINGLE BLOCK command to
block 79. As the counter preset is password protected with the write password, a SET
PASSWORD command with the write password is required before executing the Preset
(refer to Section 9.5.3.2 "SET PASSWORD").
The PROT byte (data byte 3) value defines if the password protection to increment the
counter is enabled or disabled. If the password protection is enabled, the read password
is required to increment the counter value.
The data for the WRITE SINGLE BLOCK command to preset the counter are defined in
Table 80.
Remark: A Preset counter value of 0x0001 is not possible, a WRITE SINGLE BLOCK
command with that value will only increment the counter.
Table 80. Preset counter data structure
Byte Name Value Description
0 C0 0x00, 0x02 - 0xFF LSB of the counter value
1 C1 0x00 - 0xFF MSB of the counter value
2 - 0x00 RFU
0x00 Disable the password protection to increment the
counter
3 PROT
0x01 Enable the password protection to increment the
counter with read password
To increment the counter by one with a WRITE SINGLE BLOCK command to block 79.
If the password protection to increment the counter is enabled, the read password needs
to be transmitted to the label IC with the SET PASSWORD command before (refer to
Section 9.5.3.2 "SET PASSWORD")
The data for the WRITE SINGLE BLOCK command to increment the counter are defined
in Table 80.
Remark: The counter can only be incremented with the C0 and C1 values defined in
Table 81. Other values than that preset the counter if the write password had been
transmitted before with a SET PASSWORD command or leads to an error message.
Table 81. Increment counter data structure
Byte Name Value Description
0 C0 0x01 LSB of the counter value
1 C1 0x00 MSB of the counter value
2 - 0x00 RFU
3 PROT 0x00 Incrementing of the counter value is not password
protected
