ATMEL TK5530 User Manual

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Features

• Identification transponder in plastic cube

• Basic component: e5530 IDIC

• Includes coil and capacitor for tuned circuit antenna

• Adjusted to 125 kHz carrier frequency



Application

• Car immobilizer

• Access control

• Alarm syst ems

• Other identification systems

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 IDIC
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 2.
The data are sent bit-serially as a code.



*)

e5530 and the antenna is realized by a LC-circuit.The

Read-Only
Transponder

TK5530

Any attempt to fake the base station wi th a wrong t ransponder will be recognized
immediately.

System Block Diagram

Figure 1.

TK5530 Transponder

RF field

Power

Data

Base station

U2270B reader IC

MARC4 series µC

(e5530 + coil + C in plastic cube)

C

e5530

Coil

*)

IDIC stands for IDentification Integrated Circuit and is a trademark of Atmel.

Rev. A5, 19-Dec-01

1 (10)

General The transponder consists of a plastic cube which accommodates following components:



• Read-only IDIC

• Antenna realized as tuned LC-circuit

with ROM (e5530)

Read-Only IDIC

with ROM (e5530)



The e5530 is part of a closed coupled id entification s ystem (see fig ure 1). It receiv es
power from a RF tr ansmitter (r eader) whic h is coupled inductively to the IDIC. Th e
TK5530 transp onder oper ates at a nomin al frequenc y 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 iden tif yi ng data are st ored in a 128­bit 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 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 2.

Analog front end

Modulator

Coil

Load

Clock

extractor

Mod

Clk

FSK
PSK

BIPH

Manchester

r
e
d
o

c
e
d

w
o
R

Data

R7
R6
R5
R4
R3
R2
R1
R0

128 bit PROM

Coil

Rectifier

V

DD

VSS

Bitrate

3

2

5

4

1

0

1

1

1

1

1

1

6

5

7

8

9

C

C

C

C

C

C

C

Column decoder

4

6

2

0

1

A

A

A

5

3

A

A

A

A

Counter

4

3

1

2

C

C

C

C

0

C

C

C

C

C

2 (10)

TK5530

Rev. A5, 19-Dec-01

TK5530

Absolute Maximum Ratings

Parameter Symbol Value Unit

Operating temperature range T
Storage temperature range T
Assembly temperature t < 5 min T
Magnetic field strength at 125 kHz H

amb

stg

ass

pp

Operating Characteristics Transponder

T

= 25°C, f = 125 kHz unless otherwise specified

amb

Parameters Test Conditions Symbol Min. Typ. Max. Unit

Inductance L3.95mH

LC circuit, H

Resonance frequency Room temperature f
Resonance frequency T
Quality factor Q

Magnetic Field Strength (H)

Max. field strength where tag does
not modulate

Field strength for operation T
Field strength for operation T
Field strength for operation T
Maximun field strength H

Modulation Range (see also H-DV curve)

Modulation range H

pp = 20 A/m

= -40 to +85°Cf

amb

No influence to other tags in the field H

= -40°CH

amb

= 25°CH

amb

= 85°CH

amb

= 20 A/m

pp

= 30 A/m

H

pp

H

= 50 A/m

pp

= 100 A/m

H

pp

-40 to +85 °C

-40 to +125 °C
170 °C

1000 A/m

r
r

LC

pp not

pp -40

pp 25
pp 85

pp max

121.4 125 129.2 kHz

120.0 131.0 kHz
13

2A/m

30 A/m
18 A/m
17 A/m

DV 4.0

6.0

8.0

8.0

600 A/m

V

Rev. A5, 19-Dec-01

Figure 3. Typical TK-range of resonance frequency

4

3

2

1

( % )

0

res

-1

TK of f

-2

-3

-4

-40.0 -20.0 0.0 20.0 40.0 60.0 80.0 100.0

Temperature ( °C )

3 (10)

Figure 4. Typical H-DV curve

9

8

7

6

5

4

DV ( V )

3

2

1

0

0.0 20.0 40.0 60.0 80.0 100.0 120.0

Figure 5. Measurement of the modulation range DV

Output voltage of the testing application (see figure 6 and 7)

HPP ( Á/m )

VmodV1

DV = V1-Vmod

4 (10)

TK5530

Rev. A5, 19-Dec-01

TK5530

L

FIELD GENERATING COIL

Measurement
Assembly

All parameters a re m easured in a Hel mholt z-ar rangem ent, w hic h ge nerates a ho moge­nous magnetic field (see figure 6 and 7). A function generator drives the field generating
coils, so the magnetic field can be varied in frequency and field strength.

Figure 6. Testing application

SENSING COILS ( IN PHASE )

OUTPUT
VOLTAGE

REFERENCE COIL
( IN PHASE )

TK5530

FIELD GENERATING
COILS ( IN PHASE )

FUNCTION

GENERATOR

SUBTRACTOR

REFERENCE COIL ( IN PHASE )

AMPLIFIER
1:10

Figure 7. Testing geometry

l = 30 mm

22 mm

REFERENCE COIL

SENSING COIL

5 mm

FIELD GENERATING COI

Transponder

d = 60 mm

REFERENCE COIL

SENSING COIL

Rev. A5, 19-Dec-01

5 (10)

IDIC (Reference Data

Sheet e5530)

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) V

(I = 5 mA) 16 V

pp

Coding The memory of the TK5530 can be selected to be a 64- or 128-bit rolli ng code. In the

non-standard version, the first 8 bits ar e 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 foll owing the 8-bit header can al so be defined within the cu stomer’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 t he U227 0B dat a shee t). Wh en gen erating an app ropriat e
field with a suitable reader technique, a distance of 10 cm and more can be obtained.
When using the Atmel U2270B dem o board, the ty pical distances in the rang e of 0 to
5 cm can be achieved. Maximum distance values which are generally valid can not be
given in this da ta shee t. The exa ct measu ring o f the max imum di stance s hould be car­ried out with the TK5530 being integrated into the specific application.

Orderi ng Information

Extended Type

Number

TK5530HM-232-PP Manch. RF/32 64 bit no

TK5530HM-zzz-PP defined by customer > 300 kpcs p.a.

Note: 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 (10)

TK5530

Modul. Data

Rate

Con-

figuration

Check-

sum

check-

sum

Header ID

Code

E6 fixed and

unique

code

SPQ

(Minimum

Volume)

10 kpcs >1 kpcs

Minimum

Order Volume

(per order,

from stock)

Rev. A5, 19-Dec-01

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 8. Complete transponder system with the read/write base-station IC U2270B

TK5530

5 V

C31

470 kΩ

47 nF

1.5 nF

22 µF

680 pF

4.7 kΩ

1N4148

1.2 nF

1.35 mH

r

e
w

o
P

e5530

Transponder

TK5530

110 kΩ

V

V

Batt

DV

Input

COIL2

R

COIL1

a

t

a
D

DGND GND

EXTVS

U2270B

S

RF

MS

CFE

OE

Standby

Output

Gain

Read/write

circuit

f

= 1 / (2π√LC) = 125 kHz

res

BP00
BP01
BP02
BP03
BP10

100 nF

5 V

V

DD

M44C260

osc IN

osc OUT

Micro

controller

V

SS

32 kHz

Rev. A5, 19-Dec-01

7 (10)

Package Information

Dimensions in mm

8 (10)

TK5530

Rev. A5, 19-Dec-01

TK5530

Ozone Depleting Substances Policy Statement

It is the policy of Atmel Germany GmbH to

1. Meet all present and future national and international statutory requirements.

2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems
with respect to their impact on the health and safety of our employees and the public, as well as their impact on
the environment.

It is particular concer n to control or eliminate rele ases of those s ubstances into the atm osphere which are known as
ozone depleting substances (ODSs).

The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and forbid
their use within the next ten years. Various national and inter n ational initi atives are pres sing for an ear lier ban on these
substances.

Atmel Germany GmbH has been able to use its policy of continuous improvements to eliminate the use of ODSs listed
in the following documents.

1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively

2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental
Protection Agency (EPA) in the USA

3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively.

Atmel Germany GmbH can certify that our semiconductors are not manufactured with ozone depleting substances and
do not contain such substances.

Rev. A5, 19-Dec-01

9 (10)

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France

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78054 St.-Quentin-en-Yvelines
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Tel: [phone]
Fax: [phone]

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Web Site

http://www.atmel-wm.com

© Atmel Germa ny GmbH 2001 .

Atmel Germany GmbH 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 Germany GmbH’s Terms and Conditions. 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 commi t­ment to update the information contained herein. No licenses to patents or other intellectual proper ty of Atmel Ger many GmbH are granted by
the Company in connection with the sale of Atmel Germany GmbH products, expressly or by implication. Atmel Germany GmbH’s products are
not authorized for use as critical components in life s uppor t devices or systems.

Data sheets can also be retrieved from the Internet: http://www.atmel-w m.com

Rev. A5, 19-Dec-01