HTRM440/AIE,122 Datasheet HTRM440/AIE,122 | P4-P6

2001 Oct 04 4

Philips Semiconductors Product speciﬁcation

HITAG proximity reader module

hardware

HTRM440 family

5 BLOCK DIAGRAM

handbook, full pagewidth

MGW269

VOLTAGE

REGULATION

FILTERING

I/O FUNCTIONS

LINE DRIVER

RS232

RS485

RS422

HOST

SYSTEM

EEPROM

MEMORY

MICRO-

CONTROLLER

TRANSMITTER

CORE MODULE

HTCM400

HTRM440

RECEIVER

antenna

(1)

DC POWER

SUPPLY

9 to 16 V

Fig.1 Block diagram.

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

6 PINNING

6.1 Input and output pins

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

Note

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

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

output pins of the core module

D2 anode 4 O

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

connected to pins 17 and 18 of the HITAG core module

SW1 b 8 GND

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

2001 Oct 04 5

Philips Semiconductors Product speciﬁcation

HITAG proximity reader module

hardware

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

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.

MGW271

3 places

for tuning

capacitors

interface

connector

power supply

connector

Fig.2 Pin and connector assignment.

INTERFACE TYPE

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.

MGW310

handbook, halfpage

Fig.3 D-sub interface connector.

MGU480

handbook, halfpage

ground

supply voltage

Fig.4 DC power supply connector.

2001 Oct 04 6

Philips Semiconductors Product speciﬁcation

HITAG proximity reader module

hardware

HTRM440 family

7 FUNCTIONAL DESCRIPTION

7.1 System overview

handbook, full pagewidth

MGW270

I/O

FUNCTIONS

HOST

SYSTEM

HTRM440

antenna

HITAG 1

HITAG 2

POWER

SUPPLY

Fig.5 System overview.

The HITAG proximity reader module HTRM440 (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).

P1-P3 P4-P6 P7-P9 P10-P12 P13-P15 P16-P16

HTRM440/AIE,122

Mfr. #:

Buy HTRM440/AIE,122

Manufacturer:

NXP Semiconductors

Description:

RFID READER R/W 125KHZ MODULE

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet

HTRM440/AIE,122