Datasheet HTRM440-AIE, HTRM440-BIE, HTRM440-CIE Datasheet (Philips)

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INTEGRATED CIRCUITS

DATA SH EET

HTRM440 family

HITAG proximity reader module hardware

Product speciﬁcation Supersedes data of 1999 Feb 01 File under Integrated Circuits, IC11

2001 Oct 04

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Philips Semiconductors Product speciﬁcation

HITAG proximity reader module hardware

CONTENTS

1 FEATURES 2 APPLICATIONS 3 GENERAL DESCRIPTION 4 ORDERING INFORMATION 5 BLOCK DIAGRAM 6 PINNING

6.1 Input and output pins

6.2 Antenna tuning connections

6.3 Interface connector

6.4 Power supply connector 7 FUNCTIONAL DESCRIPTION

7.1 System overview

7.1.1 Transponders

7.1.2 Antenna

7.1.3 Host system

7.1.4 Input and output functions

7.1.5 Power supply

7.2 Reader module software

7.3 Reader module hardware

7.3.1 Core module

7.3.2 Interface microcontroller to host

7.3.3 Voltage regulation filtering

7.4 Postal approval

7.5 Security considerations

7.5.1 Data stream between reader module and HITAG 1 transponders

7.5.2 Data stream between reader module and HITAG 2 transponders

7.5.3 Checking user data

7.5.4 Data privacy

7.6 Operating security

7.6.1 Anticollision

7.6.2 Monitoring the supply voltage

7.6.3 Detection of antenna rupture and antenna short-circuit

HTRM440 family

8 ELECTRICAL SPECIFICATIONS 9 MECHANICAL SPECIFICATIONS 10 APPLICATION INFORMATION

10.1 Metallic environment, interferences

10.2 Distance between two antennas

10.3 Possible sources of errors by connecting the HTRM440

11 SURVEY OF REFERENCED DOCUMENTS 12 DATA SHEET STATUS 13 DEFINITIONS 14 DISCLAIMERS

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Philips Semiconductors Product speciﬁcation

HITAG proximity reader module hardware

1 FEATURES

• Compact size

• Communication with all HITAG transponders and

various other 125 kHz transponders

• Proximity communication distances up to 200 mm

• Data encryption and key handling

• Fast and easy system integration

• Three interface options

• Standard connectors

• Simple antenna design

• DC power supply from 9 to 16 V

• Switches and LEDs connectable

• Meets all requirements for CE and EMI approval.

2 APPLICATIONS

• Universal and flexible reader module for proximity systems.

HTRM440 family

3 GENERAL DESCRIPTION

(1)

HITAG product lines of our 125 kHz family. The contactless proximity read and write system that works with passive transponders is suitable for various applications. Inductive coupling helps you to achieve reading ranges up to 200 mm and the use of cryptography guarantees highest data security.

The HTRM440 provides you with a universal, cost-effective, small and complete reader module. It enables communication with the 125 kHz transponders HITAG 1 and HITAG 2.

Easy integration and application of the HTRM440 isdue to small size and uncomplicated interfaces.

is the nameof one of the universal and powerful

(1) HITAG - is a trademark of Philips Semiconductors

Gratkorn GmbH.

4 ORDERING INFORMATION

PART NUMBER NAME ORDER CODE (12NC)

HTRM440/AIE HITAG proximity reader module RS232 9352 338 70122 HTRM440/BIE HITAG proximity reader module RS422 9352 338 80122 HTRM440/CIE HITAG proximity reader module RS485 9352 338 90122

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HITAG proximity reader module hardware

5 BLOCK DIAGRAM

handbook, full pagewidth

(1) R2 has only to be used for antenna cable lengths of more than 500 mm.

DC POWER

SUPPLY 9 to 16 V

HOST

SYSTEM

VOLTAGE

REGULATION

FILTERING

I/O FUNCTIONS

LINE DRIVER

RS232 RS485 RS422

Fig.1 Block diagram.

EEPROM MEMORY

MICRO-

CONTROLLER

CORE MODULE

HTRM440

HTCM400

TRANSMITTER

RECEIVER

HTRM440 family

antenna

MGW269

(1)

6 PINNING

6.1 Input and output pins

The pins for all inputs, outputs and antenna connections are shown in Fig.2.

SYMBOL PIN TYPE

(1)

DESCRIPTION

D1 cathode 1 P these pins can be used to connect a power LED1 D1 anode 2 O D2 cathode 3 P these pins can be used to connect LED2 and LED3 which are driven by the D2 anode 4 O

output pins of the core module

D3 cathode 5 P D3 anode 6 O SW1 a 7 I these pins can be used as inputs for switch SW1 and SW2 and are internally SW1 b 8 GND

connected to pins 17 and 18 of the HITAG core module

SW2 a 9 I SW2 b 10 GND RX 11 I receiver input; this antenna signal input has to be connected to the input line of

the antenna

TX1 12 O transmitter output; this antenna signal output has to be connected to the

output line of the antenna

TX2 13 GND antenna ground; the ground line of the antenna has to be connected to this pin

Note

1. P = power supply pin, O = output pin, I = input pin and GND = ground supply pin.

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HITAG proximity reader module hardware

interface

connector

1 2 3 4 5 6 7 8 9

power supply

connector

HTRM440 family

6.2 Antenna tuning connections

Three spare places for antenna tuning capacitors are available on the PCB (see Fig.2).

6.3 Interface connector

RS232 RS485 RS422

1 n.c. n.c. n.c. 2 RxD A− A− 3 TxD A+ A+ 4 n.c. n.c. n.c. 5 ground ground ground 6 n.c. n.c. n.c. 7 i.c. i.c. B+ 8 i.c. i.c. B− 9 n.c. n.c. n.c.

handbook, halfpage

INTERFACE TYPE

11 12 13

MGW271

Fig.2 Pin and connector assignment.

3 places for tuning capacitors

MGW310

Fig.3 D-sub interface connector.

6.4 Power supply connector

The inner pin of the DC supply connector (see Fig.4) has to be connected to positive voltage and the outer one has to be connected to ground. The connection is fail save.

handbook, halfpage

ground

supply voltage

MGU480

Fig.4 DC power supply connector.

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HITAG proximity reader module hardware

7 FUNCTIONAL DESCRIPTION

7.1 System overview

handbook, full pagewidth

HOST

SYSTEM

I/O

FUNCTIONS

HTRM440

POWER SUPPLY

Fig.5 System overview.

HTRM440 family

HITAG 1

antenna

HITAG 2

MGW270

TheHITAGproximityreadermoduleHTRM440(seeFig.5) is a part of a complete Radio Frequency Identification (RFID) system:

• Transponders

• Antenna

• Host system

• I/O functions

• Power supply.

7.1.1 TRANSPONDERS

The HTRM440 communicates with HITAG 1 and HITAG 2 transponders. Software commands are used to switch between the different transponder modes.

If several HITAG transponders arrive simultaneously within the communication field of the antenna of a HTRM440, the ‘stronger’ transponder (the nearer one) takes over or - under special circumstances - no communication takes place. If the transponders arrive into the field one after the other, communication is established with the first one, all the other transponders are ignored. Nevertheless it is possible to mute transponders, so that several HITAG transponders can be accessed sequentially. This ensures that no two (or several) HITAG transponders will ever be processed (above all written to!) accidentally at the same time.

7.1.2 ANTENNA Capacitor C (see Fig.1) is used for tuning the antenna.

There is space reserved on the HTRM440 for tuning capacitors to tune the antenna in case there is no tuning capacitor used on the antenna itself.

7.1.3 HOST SYSTEM The connection to the host system (e.g. microcontroller

or PC) is a serial interface on RS232 level for data transmission (version HTRM440/AIE). Optionally wired interface drivers for CMOS (version HTRM440/BIE) and RS485 (version HTRM440/CIE) are integrated on the reader module.

7.1.4 INPUT AND OUTPUT FUNCTIONS Two lines of the HTRM440 are wired as inputs from e.g.

switches and two lines as outputs to drive LEDs. On the PCB space is reserved to connect three LEDs as well as to connect e.g. two switches.

7.1.5 POWER SUPPLY The HTRM440 must be supplied by an external DC power

supply (9 to 16 V).

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7.2 Reader module software

Software commands mentioned in this data sheet are fully described in document

HTRM800 Family Interface Protocol Reader - Host”

7.3 Reader module hardware

7.3.1 CORE MODULE

The EEPROM on the core module HTCM400 (see Fig.1) is used to store non-volatile data such as personalization data, keys, passwords, configurations and status information.

The microcontroller processes the protocol for the communication between the transponders and the reader module. The interface signals are converted in such a way that HITAG 1 and HITAG 2 transponders are able to process them and the outgoing signals from the transponder are converted into interface-compatible signals. The second essential microcontroller function is its control function. The microcontroller activates and deactivates the transmitter, switches thereceiver between the modes for the different transponders reception and selects the EEPROM.

The transmitter receives data from the microcontroller and modulates the carrier.

The receiver demodulates the received data and passes on the data to the microcontroller for further processing.

7.3.2 INTERFACE MICROCONTROLLER TO HOST

The device communicates with the host (e.g. microcontroller or PC) via a serial interface using a baud rate of 9600 baud. Data transfer details are: 1 start bit, 8 data bits, 1 stop bit, no parity bit and the least significant bit is sent first.

7.3.3 VOLTAGE REGULATION FILTERING

Disturbances on the supply pins may reduce the performance of the system. For that reason the supply voltageis filtered but also to limitthe spurious emissions at the supply connections caused by the digital parts of the module.

“HTCM400, HTRM440 Family,

HTRM440 family

Electromagnetic emissions comply with the guidelines in FTZ 17 TR 2100 and ETS 300 683 and electromagnetic immunity complies with the guidelines in ETS 300 683.

7.5 Security considerations

DevelopingtheHTRM440specialconsiderationwasgiven to aspects of security. The following items represent the fundamental framework of the security concept:

• Cryptography

• Mutual authentication

• Password verification

• Cyclic Redundancy Check (CRC).

7.5.1 DATA STREAM BETWEEN READER MODULE AND HITAG 1 TRANSPONDERS

All the commands and data transferred from the reader module to the transponder are secured by Cyclic Redundancy Check (CRC). This check is carried out on the transponder.

Every data stream sent (commands, addresses, user data) from the proximity reader module to the transponder is first checked for data errors by the transponder by means of an integrated 8-bit CRC generator and then executed. Normally the transponder responds to each data stream from the proximity reader module with an acknowledgement signal or with a data block. The CRC is formed over commands and addresses or the plain data respectively and in case of crypto mode it is also encrypted. The generator polynomial of the transponder CRC generator reads: u8+u4+u3+u2+1 = 0x1D.

The CRC pre assignment is 0xFF. Detailed instructions how to use and calculate CRC are

available at Philips in the following application note

“HT1 (resp. HT2) Transponder family, reliability and integrity of data transmission”

7.5.2 DATA STREAM BETWEEN READER MODULE AND HITAG 2 TRANSPONDERS

Every command sent from the reader module to the transponder is checked for data errors by the transponder.

7.4 Postal approval

The postal approval can only be granted for final products, not just for modules like the HTRM440. But the reader module is designed in a way that it is possible to get the postal approval for a system including the HTRM440.

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Standard commands transferred from the reader module to the transponder are divided into two bit streams. The second bit stream is generated by inverting the bits of the first bit stream. This redundancy increases data security.

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HITAG proximity reader module hardware

7.5.3 CHECKING USER DATA 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 DATA PRIVACY 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:

• Keys to be used for initializing of the crypto block

• Logdata to be used for mutual authentication.

To make use of cryptography for HITAG 2 transponders you need:

• 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.

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).

HTRM440 family

7.6 Operating security

The following mechanisms ensure the operating security of the HITAG system:

• Anticollission mode

• Monitoring the supply voltage

• Detection of antenna rupture and antenna short-circuit.

7.6.1 ANTICOLLISION 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 MONITORING THE SUPPLY VOLTAGE 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 DETECTION OF ANTENNA RUPTURE AND ANTENNA

SHORT

-CIRCUIT

TheHTRM440doesnotgetpermanentlydamagedincase of an antenna rupture or a brief antenna short-circuit.

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.

SYSTEM PARAMETER VALUE

HITAG 1 keyinit password 0x00000000

keys 0x00000000 logdata 0x00000000

HITAG 2 keyinit password 0x00000000

key 0x4D494B524F4E password TAG 0xAA4854 password RWD 0x4D494B52

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HTRM440 family

hardware

8 ELECTRICAL SPECIFICATIONS

SYMBOL PARAMETER CONDITION MIN. TYP. MAX. UNIT

External power supply

Modulation

Interface to host

Antenna

d operating distance note 2 − 200 − mm

Temperature

oper

stg

DC supply voltage 9 − 16 V DC supply current −−150 mA

modulation ratio of reader module

Amplitude Shift Keying (ASK) − 100 − %

to transponder modulation ratio of transponder to

reader module

Amplitude Shift Keying (ASK); note 1

−−−%

transmission speed − 9600 − baud

operating temperature −25 − +85 °C storage temperature −40 − +85 °C

Notes

1. Modulation ratio depending on the distance between transponder and reader module.

2. Depending on antenna and type of transponder; three-wire cable, shielded.

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9 MECHANICAL SPECIFICATIONS

handbook, full pagewidth

7.5

49.560.0 43.0

3.0

108.1

88.0

HTRM440 family

2.0

8.5

2.54

54.0

Dimensions in mm.

6.3 10.0

22.8

40.0

2.54

2.9

43.0

60.0

A-A

55.0

MGW272

20.0

Fig.6 Proximity reader module.

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HITAG proximity reader module hardware

10 APPLICATION INFORMATION

10.1 Metallic environment, interferences

The communication range is impaired by metallic environment and electromagnetic interferences (e.g. monitors and keyboards). Therefore, you should keep a distance of at least the antenna’s diameter to metallic surfaces or loops as well as to electromagnetic interferences. If this is not possible, you have to take preventivemeasures such as using ferritesor shielding for transponder and antenna.

10.2 Distance between two antennas

In order to be able to operate two systems side by side without negative influence on communication ranges, you must place the antennas at a minimum distance of four times the antenna diameter. If you place them at a closer distance be sure to use suitable shielding or synchronisation.

HTRM440 family

• Interference received by the antenna because of an external noise source (e.g. monitor, keyboards); the remedial measure is to remove the antenna from the interfering area

• Connecting cables of the antenna changed by mistake

• Antenna is mounted in metal environment; the remedial

measureistomountanon-metal space keeper between the antenna and the metal

• Antenna is not designed following the design instructions

• Inductance of the antenna is too high

• Quality factor of the antenna is too high (Q > 40)

• Antenna current is too high

• Antenna voltage is too high.

10.3 Possible sources of errors by connecting the HTRM440

The following error list should be checked if any error (e.g. readorwrite distances that do not reach the specified values) occurs:

• Power supply cable not mounted correctly

• DC powersupply voltage not in thespecified range from

9to16V

• Serial interface not connected correctly

11 SURVEY OF REFERENCED DOCUMENTS

CATEGORY TITLE

Data sheet Application note

“HTCM400, HTRM440 Family, HTRM800 Family Interface Protocol Reader - Host” “HT1 (resp. HT2) Transponder family, reliability and integrity of data transmission”

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HITAG proximity reader module

HTRM440 family

hardware

12 DATA SHEET STATUS

PRODUCT

DATA SHEET STATUS

Objective data Development This data sheet contains data from the objective specification for product

Preliminary data Qualiﬁcation This data sheet contains data from the preliminary specification.

Product data Production This data sheet contains data from the product specification. Philips

Notes

1. Please consult the most recently issued data sheet before initiating or completing a design.

2. The product status of the device(s) described in this data sheet may have changed since this data sheet was

published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.

(1)

STATUS

(2)

development. Philips Semiconductors reserves the right to change the speciﬁcation in any manner without notice.

Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the speciﬁcation without notice, in order to improve the design and supply the best possible product.

Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Changes will be communicated according to the Customer Product/Process Change Notiﬁcation (CPCN) procedure SNW-SQ-650A.

DEFINITIONS

13 DEFINITIONS Short-form specification  The data in a short-form

specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook.

Limiting values definition  Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device attheseorat any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information  Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make norepresentationorwarrantythatsuchapplicationswillbe suitable for the specified use without further testing or modification.

14 DISCLAIMERS Life support applications  These products are not

designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury.Philips Semiconductorscustomersusingorsellingtheseproducts for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.

Right to make changes  Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for theuseofanyoftheseproducts,conveysnolicenceortitle under any patent, copyright, or mask work right to these products,andmakes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.

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HTRM440 family

NOTES

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HITAG proximity reader module hardware

HTRM440 family

NOTES

2001 Oct 04 14

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Philips Semiconductors Product speciﬁcation

HITAG proximity reader module hardware

HTRM440 family

NOTES

2001 Oct 04 15

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Philips Semiconductors – a w orldwide compan y

Contact information

For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825 For sales ofﬁces addresses send e-mail to: [email protected].

The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.

Printed in The Netherlands 613502/02/pp16 Date of release: 2001 Oct 04 Document order number: 9397 750 08332

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