HTRM440/AIE,122 NXP Semiconductors, HTRM440/AIE,122 Datasheet - Page 8

• Manufacturer Part Number: HTRM440/AIE,122
• Description: RFID HITAG PROX MODULE RS232
• Manufacturer: NXP Semiconductors
• Series: HITAG® Proximityr

Specifications of HTRM440/AIE,122

• Rf Type: Read Only
• Frequency: 125kHz
• Features: HITAG Transponders
• Package / Case: 108mm x 60mm x 20mm, RS232
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Other names: 568-2208; 935233870122; HTRM440/AIE

Philips Semiconductors
7.5.3
This check is carried out on the HTRM440.
Security of the data read from the transponder by the
reader module remains with the user for reasons of
flexibility. Therefore, you can choose flexible check sums
and store them in the transponder memory together with
the data. You can protect sensitive data better than less
sensitive data, thus permitting optimized operation times.
7.5.4
The use of cryptography (stream cypher), mutual
authentication, and password verification prevents
monitoring and copying the data channel. Therefore, the
area of the transponder that only can be accessed
enciphered is called ‘secret area’.
To make use of cryptography for HITAG 1 transponders
you need:
To make use of cryptography for HITAG 2 transponders
you need:
The transponders and the HTRM440 are provided with
identical transport keys and transport logdata so that you
can start operating them right away (see Table 1).
In order to offer our OEM clients high flexibility, the
configuration of the transponder memory, password, keys
and logdata can be changed. We strictly recommend to
rigorously restrict these possibilities for the end customers
(by setting the configuration page to read only, setting
password, keys and logdata to neither read nor write).
Table 1 Transport values predefined by Philips.
2001 Oct 04
HITAG 1
HITAG 2
Keys to be used for initializing of the crypto block
Logdata to be used for mutual authentication.
A key which is used to initialize the crypto block using
HITAG 2 in crypto mode
Passwords which are used for authentication for
HITAG 2 in password mode.
HITAG proximity reader module
hardware
SYSTEM
C
D
HECKING USER DATA
ATA PRIVACY
keyinit password
keys
logdata
keyinit password
key
password TAG
password RWD
PARAMETER
8
7.6
The following mechanisms ensure the operating security
of the HITAG system:
7.6.1
In proximity reader applications using HITAG 1 or
HITAG 2 transponders, only one transponder is handled
even if there are several transponders within the
communication field of the antenna. In this case either no
communication takes place or the ‘stronger’ or closer
transponder takes over. By muting a selected transponder
(HALT mode) another transponder that is to be found in
the communication field of the antenna can be recognised.
7.6.2
The supply voltage is controlled by a watchdog circuit
which triggers a system reset if the supply voltage drops
below 4.75 V or if the microcontroller fails.
7.6.3
The HTRM440 does not get permanently damaged in case
of an antenna rupture or a brief antenna short-circuit.
Anticollission mode
Monitoring the supply voltage
Detection of antenna rupture and antenna short-circuit.
0x00000000
0x00000000
0x00000000
0x00000000
0x4D494B524F4E
0xAA4854
0x4D494B52
Operating security
A
M
D
SHORT
NTICOLLISION
ETECTION OF ANTENNA RUPTURE AND ANTENNA
ONITORING THE SUPPLY VOLTAGE
-
CIRCUIT
VALUE
HTRM440 family
Product specification