HTRM440/AIE,122 NXP Semiconductors, HTRM440/AIE,122 Datasheet - Page 6

• 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
7.1
The HITAG proximity reader module HTRM440 (see Fig.5)
is a part of a complete Radio Frequency Identification
(RFID) system:
7.1.1
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.
2001 Oct 04
handbook, full pagewidth
Transponders
Antenna
Host system
I/O functions
Power supply.
HITAG proximity reader module
hardware
FUNCTIONAL DESCRIPTION
System overview
T
RANSPONDERS
SYSTEM
HOST
FUNCTIONS
I/O
Fig.5 System overview.
HTRM440
6
SUPPLY
POWER
7.1.2
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
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
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
The HTRM440 must be supplied by an external DC power
supply (9 to 16 V).
A
H
I
P
NPUT AND OUTPUT FUNCTIONS
antenna
NTENNA
OWER SUPPLY
OST SYSTEM
HITAG 1
HITAG 2
MGW270
HTRM440 family
Product specification