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Features
* * * *
Identification Transponder in Plastic Cube Basic Component: e5530 IDICO Includes Coil and Capacitor for Tuned Circuit Antenna Carrier Frequency: 125 kHz
Application
* * * *
Car Immobilizer Access Control Alarm Systems Other Identification Systems
Read-only Transponder TK5530
Description
The TK5530 is a complete transponder, which implements all important functions for immobilizer and identification systems. It consists of a plastic cube which accommodates the read-only IDentification Integral Circuit (IDICO) e5530 and the antenna is realized by a LC-circuit. The identifying data are stored in a 128 bit PROM on the e5530, realized as an array of laser-programmable fuses. The logic block diagram for the e5530 is shown in Figure 1. The data are sent bit-serially as a code. Any attempt to fake the base station with a wrong transponder will be recognized immediately.
System Block Diagram
TK5530 Transponder RF field (e5530 + coil + C in plastic cube) C e5530 Power Coil Data
Base station U2270B reader IC MARC4 series C
Rev. 4683A-RFID-02/03
1
General
The transponder consists of a plastic cube which accommodates following components: * * Read-only IDICO with ROM (e5530) Antenna realized as tuned LC-circuit
Read-Only IDICO
with ROM (e5530)
The e5530 is part of a closed coupled identification system (see 'System Block Diagram'). It receives power from a RF transmitter (reader) which is coupled inductively to the IDIC. The TK5530 transponder operates at a nominal frequency of 125 kHz. Receiving RF, the IDIC responds with a data stream by damping the incoming RF via an internal load. This damping in turn can be detected by the reader. The identifying data are stored in a 128-bit PROM on the e5530, which is factory programmed with a unique code (see specification of the e5530). The e5530 has several possible options regarding modulation, bitrate, memory size etc.
Antenna
Figure 1. Block Diagram
Analog front end
The antenna consists of a coil and a capacitor for tuning the circuit to the nominal carrier frequency of 125 kHz. The coil has a ferrite-core for improving the readout distance.
Load Coil
Mod
Modulator FSK PSK BIPH Manchester
Row decoder
Data
Clock extractor
Clk
R7 R6 R5 R4 R3 R2 R1 R0
128 bit PROM
Coil
A2 A1 A0
Rectifier VDD VSS
Bitrate
2
TK5530
4683A-RFID-02/03
A6 A5 A4 A3
C15 C14 C13 C12 C11 C10 C9 C8 C7 C6 C5 C4 C3 C2 C1 C0
Column decoder
Counter
TK5530
Absolute Maximum Ratings
Parameter Operating temperature range Storage temperature range Assembly temperature t < 5 min Magnetic field strength at 125 kHz Symbol Tamb Tstg Tass Hpp Value -40 to +85 -40 to +125 170 1000 Unit C C C A/m
Operating Characteristics Transponder
Tamb = 25C, f = 125 kHz unless otherwise specified Parameters Inductance LC circuit, Hpp = 20 A/m Resonance frequency Resonance frequency Quality factor Magnetic Field Strength (H) Max. field strength where tag does not modulate Field strength for operation Field strength for operation Field strength for operation Maximun field strength Modulation Range (see also H-DV curve) Modulation range Hpp = 20 A/m Hpp = 30 A/m Hpp = 50 A/m Hpp = 100 A/m DV 4.0 6.0 8.0 8.0 V No influence to other tags in the field Tamb = -40C Tamb = 25C Tamb = 85C Hpp not Hpp -40 Hpp 25 Hpp 85 Hpp max 2 30 18 17 600 A/m A/m A/m A/m A/m Room temperature Tamb = -40 to +85C fr fr QLC 121.4 120.0 13 125 129.2 131.0 kHz kHz Test Conditions Symbol L Min. Typ. 3.95 Max. Unit mH
Figure 2. Typical TK-range of Resonance Frequency
4 3 2
TK of fres (%)
1 0 -1 -2 -3 -4 -40.0
-20.0
0.0
20.0
40.0
60.0
80.0
100.0
Temperature (C)
3
4683A-RFID-02/03
Figure 3. Typical H-DV Curve
9 8 7 6
DV (V)
5 4 3 2 1 0 0.0 20.0 40.0 60.0 80.0 100.0 120.0
HPP (A/m)
Figure 4. Measurement of the Modulation Range DV
Output voltage of the testing application (see figure 6 and 7)
V1
Vmod
DV = V1-Vmod
4
TK5530
4683A-RFID-02/03
TK5530
Measurement Assembly
All parameters are measured in a Helmholtz-arrangement, which generates a homogenous magnetic field (see Figure 5 and Figure 6). A function generator drives the field generating coils, so the magnetic field can be varied in frequency and field strength. Figure 5. Testing Application
SENSING COILS ( IN PHASE ) SUBTRACTOR OUTPUT VOLTAGE AMPLIFIER 1:10 REFERENCE COIL ( IN PHASE ) REFERENCE COIL ( IN PHASE )
TK5530
FIELD GENERATING COILS ( IN PHASE )
FUNCTION GENERATOR
Figure 6. Testing Geometry
l = 30 mm
Transponder
22 mm d = 60 mm
REFERENCE COIL SENSING COIL SENSING COIL
REFERENCE COIL
5 mm FIELD GENERATING COIL FIELD GENERATING COIL
5
4683A-RFID-02/03
IDICO (Reference Data Sheet e5530)
Memory size maximum Memory type Programming Data rate Encoding Modulation Maximum coil voltage (internally limited) Vpp (I = 5 mA)
128 Bit (details see "Coding") ROM Laser cutting RF/32 - RF/64 Manchester or Bi-phase AM 16 V
Coding
The memory of the TK5530 can be selected to be a 64- or 128-bit rolling code. In the non-standard version, the first 8 bits are a customer-specific pattern. This can be selected by the customer, provided that Atmel agrees to the customer's proposal. This pattern is unique within the serial rolling code data stream. The ID code and further bit informations following the 8-bit header can also be defined within the customer's specification. The set-up of a suitable coding scheme can be provided on customer's request.
Read Distance
The maximum distance between the base station and the TK5530 mainly depends on the base station, the coil geometries and the modulation options chosen (see U2270B Antenna Design Hints and the U2270B data sheet). When generating an appropriate field with a suitable reader technique, a distance of 10 cm and more can be obtained. When using the Atmel U2270B demo board, the typical distances in the range of 0 to 5 cm can be achieved. Maximum distance values which are generally valid can not be given in this data sheet. The exact measuring of the maximum distance should be carried out with the TK5530 being integrated into the specific application.
Ordering Information
Extended Type Number Modul. Data Rate Configuration Checksum Header ID Code SPQ (Minimum Volume)
10 kpcs
Minimum Order Volume
TK5530HM-232-PP
Manch.
RF/32
64 bit
no checksum
E6
fixed and unique code
>1 kpcs (per order, from stock) > 300 kpcs p.a.
TK5530HM-zzz-PP Note:
defined by customer
1) Definition of customized part number basing on orders for first year volume (300 kpcs) 2) Definition of header, ID code, checksum etc. according to customers data base 3) 8.000 US$ initial cost for metal mask 4) Lead time 5 month 5) Low volume customized application can be covered by TK5550F-PP programming, for identical application, as TK5530H-zzz-PP.
6
TK5530
4683A-RFID-02/03
TK5530
Ordering Number for Standard Version
TK5530HM-232-PP
Ordering Number for Customized Version
TK5530xy-zzz-PP
Plastic package Custom code Modulation M -> Manchester code B -> Biphase code Mask version of die
Application
Figure 7. Complete Transponder System with the Read/Write Base-station IC U2270B
110 kW 5V VBatt 47 nF 22 mF 680 pF Input 4.7 kW 1N4148 470 kW 1.5 nF C31 COIL2 1.2 nF 1.35 mH R COIL1 Read/write circuit DGND GND 100 nF Micro controller VSS DV S VEXT VS U2270B RF MS CFE OE Standby Output Gain 5V VDD M44C260
BP00 BP01 BP02 BP03 BP10
osc IN 32 kHz
osc OUT
Power
Data
e5530 Transponder TK5530
fres = 1 / (2pOLC) = 125 kHz
7
4683A-RFID-02/03
Package Information
Dimensions in mm
8
TK5530
4683A-RFID-02/03
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Web Site
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(c) Atmel Corporation 2003. Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company's standard warranty which is detailed in Atmel's Terms and Conditions located on the Company's web site. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel are granted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel's products are not authorized for use as critical components in life support devices or systems.
Atmel (R) is the registered trademark of Atmel. IDIC O stands for IDentification Integrated Circuit and is a trademark of Atmel Germany GmbH. Other terms and product names may be the trademarks of others. Printed on recycled paper.
4683A-RFID-02/03 xM

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