ATMEL TK5530HM-232-PP

Features
•
•
•
•
Identification Transponder in Plastic Cube
Basic Component: e5530 IDICÒ
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
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 (IDICÒ) e5530 and the antenna is
realized by a LC-circuit.
TK5530
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 µC
Rev. 4683A–RFID–02/03
1
General
The transponder consists of a plastic cube which accommodates following components:
Read-Only IDICÒ
•
Read-only IDICÒ with ROM (e5530)
•
Antenna realized as tuned LC-circuit
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).
with ROM (e5530)
The e5530 has several possible options regarding modulation, bitrate, memory size etc.
Antenna
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.
Figure 1. Block Diagram
Analog front end
Load
Coil
Modulator
FSK
PSK
BIPH
Manchester
Clk
R7
R6
R5
R4
R3
R2
R1
R0
128 bit PROM
C15
C14
C13
C12
C11
C10
C9
C8
C7
C6
C5
C4
C3
C2
C1
C0
Clock
extractor
Data
Row decoder
Mod
Column decoder
Rectifier
VDD
2
Bitrate
A6
A5
A4
A3
A2
A1
A0
Coil
Counter
VSS
TK5530
4683A–RFID–02/03
TK5530
Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
Operating temperature range
Tamb
-40 to +85
°C
Storage temperature range
Tstg
-40 to +125
°C
Assembly temperature t < 5 min
Tass
170
°C
Magnetic field strength at 125 kHz
Hpp
1000
A/m
Operating Characteristics Transponder
Tamb = 25°C, f = 125 kHz unless otherwise specified
Parameters
Test Conditions
Symbol
Inductance
Min.
L
Typ.
Max.
3.95
Unit
mH
LC circuit, Hpp = 20 A/m
Resonance frequency
Room temperature
fr
121.4
Resonance frequency
Tamb = -40 to +85°C
fr
120.0
Quality factor
125
QLC
13
129.2
kHz
131.0
kHz
Magnetic Field Strength (H)
Max. field strength where tag does
not modulate
No influence to other tags in the field
Hpp not
2
A/m
Field strength for operation
Tamb = -40°C
Hpp -40
30
A/m
Field strength for operation
Tamb = 25°C
Hpp 25
18
A/m
Field strength for operation
Tamb = 85°C
Hpp 85
17
A/m
Maximun field strength
600
Hpp max
A/m
Modulation Range (see also H-DV curve)
Modulation range
DV
Hpp = 20 A/m
Hpp = 30 A/m
Hpp = 50 A/m
Hpp = 100 A/m
4.0
6.0
8.0
8.0
V
Figure 2. Typical TK-range of Resonance Frequency
4
3
TK of fres (%)
2
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
DV (V)
6
5
4
3
2
1
0
0.0
20.0
40.0
60.0
80.0
100.0
120.0
HPP (Á/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 )
OUTPUT
VOLTAGE
SUBTRACTOR
TK5530
AMPLIFIER
1:10
REFERENCE COIL
( IN PHASE )
REFERENCE COIL ( IN PHASE )
FIELD GENERATING
COILS ( IN PHASE )
FUNCTION
GENERATOR
Figure 6. Testing Geometry
l = 30 mm
Transponder
d = 60 mm
22 mm
REFERENCE COIL
REFERENCE COIL
SENSING COIL
SENSING COIL
5 mm
FIELD GENERATING COIL
FIELD GENERATING COIL
5
4683A–RFID–02/03
IDICÒ (Reference
Data Sheet e5530)
Coding
Memory size maximum
128 Bit (details see “Coding”)
Memory type
ROM
Programming
Laser cutting
Data rate
RF/32 - RF/64
Encoding
Manchester or Bi-phase
Modulation
AM
Maximum coil voltage
(internally limited) Vpp (I = 5 mA)
16 V
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)
Minimum
Order Volume
TK5530HM-232-PP
Manch.
RF/32
64 bit
no
checksum
E6
fixed and
unique
code
10 kpcs
>1 kpcs
(per order,
from stock)
TK5530HM-zzz-PP
Note:
6
defined by customer
> 300 kpcs p.a.
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.
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
5V
110 kW
5V
22 mF
47 nF
U2270B
DV S
M44C260
RF
MS
CFE
OE
Standby
Output
Gain
680 pF
Input
4.7 kW
1N4148
470 kW
VDD
VEXT VS
VBatt
BP00
BP01
BP02
BP03
BP10
osc IN
32 kHz
osc OUT
COIL2
1.5 nF
1.2 nF
1.35 mH
R
Read/write
circuit
100 nF
Micro
controller
COIL1
Data
Power
C31
e5530
DGND
GND
VSS
fres = 1 / (2pÖLC) = 125 kHz
Transponder
TK5530
7
4683A–RFID–02/03
Package Information
Dimensions in mm
8
TK5530
4683A–RFID–02/03
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© 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
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IDIC Ò stands for IDentification Integrated Circuit and is a trademark of Atmel Germany GmbH.
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Printed on recycled paper.
4683A–RFID–02/03
xM