HT2DC20S20/F,122 NXP Semiconductors, HT2DC20S20/F,122 Datasheet - Page 8

• Manufacturer Part Number: HT2DC20S20/F,122
• Description: RFID HITAG STICK TRANSP 125KHZ
• Manufacturer: NXP Semiconductors
• Series: HITAG® 2r

Specifications of HT2DC20S20/F,122

• Rf Type: Read / Write
• Frequency: 125kHz
• Features: 128 bits user data, 128 bits control data
• Package / Case: PLLMC
• Operating Temperature Range: - 40 C to + 85 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-2203; 568-2203-1; 568-2203-1; 935233940122; HT2DC20S20M

Philips Semiconductors
Definition of keys and passwords
Keys are cryptographic codes, which determine data
encryption during data transfer between the read and write
device and the transponder. They are used to select a
HT2DC20S20 transponder in the crypto mode. The 16-bit
key HIGH and 32-bit key LOW form one 48-bit key which
has to be identical on both the transponder and the read
and write device.
Passwords are needed to select a HT2DC20S20
transponder in the password mode. There is one pair of
passwords (password TAG and password RWD) which
has to be identical both on the transponder and the read
and write device:
Table 5 Keys and passwords for the read and write device and the transponder
Note
1. Optional for both password and crypto mode; depending on the configuration of the read and write device.
Configuration of delivered transponders
HT2DC20S20 transponders are delivered with the following configuration.
Table 6 Configuration of delivered transponders
Note
1. Before delivering transponders to end users, pages 1 to 3 should be locked by setting configuration byte: set bit 6 to
2001 Oct 01
Password mode
Crypto mode
Unique serial number serial number
Configuration
Transport passwords
and transport keys
Password TAG
Password that the transponder sends to the read and
write device and which may be verified by the latter
(depending on the configuration of the read and write
device).
HITAG 2 stick transponder
logic 1 for page 3 and set bit 7 to logic 1 for pages 1 and 2.
MODE
ITEM
password RWD
key LOW
key HIGH
password TAG; note 1
configuration byte
password RWD
password TAG
key LOW
key HIGH
ON THE READ AND WRITE DEVICE
NAME
0x4D494B52
0xAA4854
0xXXXX
0x06
0x4D494B52
0x4F4E
VALUE
8
It is important that the following values are in accordance
with each other, i.e. the respective data on the read and
write device and on the transponder have to be identical
pairs.
The keys and passwords are predefined by Philips by
means of defined transport passwords and a transport
key. They can be written to memory, which means that
they can be changed (see also Section “Configuration of
delivered transponders”).
Remark: keys and passwords only can be changed if their
current values are known!
Password RWD
Password that the read and write device sends to the
transponder and which is checked for identity by the
latter.
read-only
password mode;
Manchester code;
pages 1 to 7 read/write
MIKR
MIKR
ON
DESCRIPTION
password RWD
key LOW
key HIGH
password TAG
ON THE TRANSPONDER
HT2DC20S20
fixed
can be changed;
note 1
Product specification
REMARK