ETC HT2DC20S20

INTEGRATED CIRCUITS
DATA SHEET
HT2DC20S20
HITAG 2 stick transponder
Product specification
Supersedes data of 1998 Mar 01
File under Integrated Circuits, IC11
2001 Oct 01
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
FEATURES
• Identification transponder for use in contactless
applications
• Operating frequency 125 kHz
• Data transmission and supply energy via RF link,
no internal battery
The transponder requires no internal power supply; it
derives its power from the magnetic component of the
RF carrier frequency generated by the reader. Data is
transmitted by modulating this carrier.
• Reading distance same as writing distance
• Non-volatile memory of 256 bits (128 bits user data,
128 bits control data and secret memory) organized in
8 pages, 4 bytes each
The HT2DC20S20 is dedicated for use in secure access
systems where the transponder and the reader have to
identify each other. The choosable use of cryptography
enables highest data security. Providing several operating
modes (password, crypto and standard read-only modes)
the versatile transponder can be used in various
applications.
• Ten years non-volatile data retention
• More than 100000 erase/write cycles
• Selective read/write protection of memory content
• Two coding schemes for read operation: biphase and
Manchester coding
The HALT command can be used after finishing data
exchange to reach the halt state. In this state the
transponder is muted. This feature can be used to have
steady RF field where single transponders are collected
one by one. Each transponder is operated and then
disabled, so it does not interfere with the next transponder.
The HALT state can only be exited by switching off and
removing the magnetic field.
• Effective communication protocol with outstanding data
integrity check
• Mutual authentication function
• Read/write mode allows:
– Plain data transmission (password check)
– Encrypted data transmission (crypto mode).
The EEPROM has a capacity of 256 bits and is organized
in 8 pages of 4 bytes. The 8 pages are split up into
4 pages containing user data and into 4 pages for control
of the memory access and for authentication purposes.
The pages of the transponder memory can be protected
against read and write access by setting corresponding
memory flags.
• In read/write mode multi-tag operation possible because
of special HALT function
• Emulation of standard industrial read-only transponders:
– Public mode A (64 bits read-only)
– Public mode B (according to ISO 11785 for animal
identification)
Data transmission from the HT2DC20S20 to the reader
uses Manchester or biphase coding and Amplitude Shift
Keying (ASK) modulation. Absorption modulation is used
to transmit data from the transponder to the reader. The
transponder absorbs the magnetic field which hence
modulates the current in the reader antenna.
– Public mode C (PIT compatible mode).
• Special features:
– User defined write protection
– Unique 32-bit serial number for each transponder
– Read-only emulation function
Data transmission from the reader to the HT2DC20S20
uses Binary Pulse Length Modulation (BPLM).
– Encrypted data transmission possible.
GENERAL DESCRIPTION
The HITAG(1) stick transponder HT2DC20S20 is a high
performance transponder for bi-directional transmission in
full-duplex between the read and write device and the
transponder.
Data is stored in the transponder in a non-volatile memory
(EEPROM).
(1) HITAG - is a trademark of Philips Semiconductors
Gratkorn GmbH.
2001 Oct 01
2
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
QUICK REFERENCE DATA
SYMBOL
PARAMETER
f0
resonant frequency
ftrans
data transfer rate
M
MIN.
TYP.
MAX.
UNIT
121
125
129
kHz
transponder to reader
−
4.0
−
kbits/s
reader to transponder
−
5.2
−
kbits/s
size
−
256
−
bits
organization
−
8
−
pages
serial number
−
32
−
bits
secret key
−
48
−
bits
−
36
−
ms
memory
N
encrypted mutual authentication bits
taut
authentication time
ORDERING INFORMATION
PACKAGE
TYPE
NUMBER
NAME
HT2DC20S20
PLLMC
2001 Oct 01
DESCRIPTION
plastic leadless module carrier
3
VERSION
SOT385-1
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
BLOCK DIAGRAM
handbook, full pagewidth
HT2DC20S20
L
C
CONTACTLESS INTERFACE
CONTROL LOGIC
RECTIFIER
VOLTAGE LIMITER
DATA
ACQUISITION
POWER-ON
RESET
EEPROM
ACCESS CONTROL
CLOCK
RECOVERY
CALCULATION UNIT
MODULATOR
DEMODULATOR
EEPROM
TRANSPONDER IC
MGW186
Fig.1 Block diagram.
2001 Oct 01
4
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
FUNCTIONAL DESCRIPTION
Operating modes
Memory organization
With the configuration byte, the operating mode and the
access rights to the memory can be selected.
The memory of the transponder consists of 256 bits
EEPROM memory and is organized in 8 pages with 32 bits
each.
During power-up of the transponder the configuration byte
is read from the EEPROM of the transponder.
The HT2DC20S20 can operate in several modes:
Depending on the operating mode the EEPROM is
organized as described in Table 1.
Table 1
• Crypto mode
Mode for writing or reading the transponder with
encrypted data transmission.
Memory organization
PAGE
CONTENT
• Password mode
Crypto mode
0
serial number
1
32 LSBs of 48-bit key
2
16 MSBs of 48-bit key; 16 bits reserved
3
8-bit configuration; 24-bit password TAG
4
read/write page
5
read/write page
6
read/write page
7
read/write page
Mode for writing or reading the transponder with plain
data transmission.
• Public mode A (Manchester)
Read-only mode. The 64 bits of the user pages 4 and 5
are cyclically transmitted to the read and write device.
• Public mode B (biphase)
Read-only mode according to ISO standards 11784
and 11785 for animal identification. The 128 bits of the
user pages 4 to 7 are cyclically transmitted to the read
and write device.
• Public mode C (biphase)
Password mode
0
serial number
1
password RWD
2
reserved
3
8-bit configuration; 24-bit password TAG
4
read/write page
5
read/write page
6
read/write page
7
read/write page
2001 Oct 01
Read-only mode emulating the read operation of the
PCF793X (with a slightly different program mode
check). In the public mode C the 128 bits of the user
pages 4 to 7 are cyclically transmitted to the read and
write device.
5
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
RF field applied
handbook, full pagewidth
start authentication
WAIT
entering public modes
(if configured)
AUTHORIZED
read, write
commands
READ-ONLY
HALT
MGW187
Fig.2 Status flow.
Status flow
Configuration
After entering the RF field the transponder waits for a
command to start the authentication (see Fig.2). After
issuing this command the mutual authentication takes
place, followed by read and write commands.
If you change the configuration (keys or passwords) you
have to place the transponder directly on the antenna
(0-distance)! In order to avoid any errors, do not move the
transponder during this write process and be sure that you
are in a safe environment without electrical noise.
In the password mode the data transfer occurs plain and in
the crypto mode data are encrypted.
The configuration byte is represented by the first 8 bits of
page 3 of the transponder memory (see Table 2).
The halt state can be entered for muting a transponder.
If the transponder is configured in one of the public modes,
these modes are entered automatically after a certain
waiting time and data pages are sent cyclically to the read
and write device.
By issuing the command to start the authentication during
the waiting time also public mode transponders can be
brought into the authorized state.
2001 Oct 01
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Philips Semiconductors
Product specification
HITAG 2 stick transponder
Table 2
HT2DC20S20
Format of page 3
PAGE 3
bit 31
bit 24 bit 23
configuration byte (8 bits)
7
Table 3
6
5
4
3
2
bit 0
password TAG (24 bits)
1
0
Bits of the configuration byte
BIT
VALUE
0
0
Manchester code
does effect HITAG 2 operation only
1
biphase code
does effect HITAG 2 operation only
00
public mode B
coding biphase; note 1
01
public mode A
coding Manchester; note 1
10
public mode C
coding biphase; note 1
11
HITAG 2
coding depending on bit 0; note 1
2, 1
3
4
5
6
7
DESCRIPTION
0
password mode
1
crypto mode
0
pages 6 and 7 read/write
1
pages 6 and 7 read-only
REMARK
0
pages 4 and 5 read/write
1
pages 4 and 5 read/write
0
page 3 read/write
1
page 3 read-only
0
pages 1 and 2 read/write
1
pages 1 no read and write
note 3
page 2 read-only
when transponder is in password mode
page 3 no read and write
when transponder is in crypto mode
configuration byte and password TAG fixed; note 2
Notes
1. The coding in HITAG 2 operation is depending on bit 0.
2. The setting of this bit is One Time Programmable (OTP).
Do not set bit 6 of the configuration byte to logic 1 before having written the final data into page 3 (including the
configuration byte and password TAG) of the transponder.
3. The setting of this bit is One Time Programmable (OTP).
Do not set bit 7 of the configuration byte to logic 1 before having written the final data into pages 1 and 2 of the
transponder.
Table 4
Standard values of the configuration byte
MODE SELECTION
VALUE
Password mode
0x06
Crypto mode
0x0E
Public mode A
0x02
Public mode B
0x00
Public mode C
0x04
2001 Oct 01
7
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
• Password RWD
Definition of keys and passwords
Password that the read and write device sends to the
transponder and which is checked for identity by the
latter.
Keys are cryptographic codes, which determine data
encryption during data transfer between the read and write
device and the transponder. They are used to select a
HT2DC20S20 transponder in the crypto mode. The 16-bit
key HIGH and 32-bit key LOW form one 48-bit key which
has to be identical on both the transponder and the read
and write device.
It is important that the following values are in accordance
with each other, i.e. the respective data on the read and
write device and on the transponder have to be identical
pairs.
Passwords are needed to select a HT2DC20S20
transponder in the password mode. There is one pair of
passwords (password TAG and password RWD) which
has to be identical both on the transponder and the read
and write device:
The keys and passwords are predefined by Philips by
means of defined transport passwords and a transport
key. They can be written to memory, which means that
they can be changed (see also Section “Configuration of
delivered transponders”).
• Password TAG
Remark: keys and passwords only can be changed if their
current values are known!
Password that the transponder sends to the read and
write device and which may be verified by the latter
(depending on the configuration of the read and write
device).
Table 5
Keys and passwords for the read and write device and the transponder
MODE
ON THE READ AND WRITE DEVICE
ON THE TRANSPONDER
Password mode
password RWD
⇔
password RWD
Crypto mode
key LOW
⇔
key LOW
key HIGH
⇔
key HIGH
password TAG; note 1
⇔
password TAG
−
Note
1. Optional for both password and crypto mode; depending on the configuration of the read and write device.
Configuration of delivered transponders
HT2DC20S20 transponders are delivered with the following configuration.
Table 6
Configuration of delivered transponders
ITEM
NAME
VALUE
DESCRIPTION
REMARK
Unique serial number serial number
0xXXXX
read-only
fixed
Configuration
configuration byte
0x06
password mode;
Manchester code;
pages 1 to 7 read/write
can be changed;
note 1
Transport passwords
and transport keys
password RWD
0x4D494B52
MIKR
password TAG
0xAA4854
key LOW
0x4D494B52
MIKR
key HIGH
0x4F4E
ON
Note
1. Before delivering transponders to end users, pages 1 to 3 should be locked by setting configuration byte: set bit 6 to
logic 1 for page 3 and set bit 7 to logic 1 for pages 1 and 2.
2001 Oct 01
8
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
LIMITING VALUES
All values are in accordance with the Absolute Maximum Rating System (IEC 60134).
SYMBOL
PARAMETER
N
number of erase/write cycles of EEPROM
tD(ret)
data retention time of EEPROM
CONDITIONS
Tamb = 55 °C
MIN.
MAX.
UNIT
100000
−
10
−
years
Toper
operating temperature
−40
+85
°C
Tstg
storage temperature
−55
+125
°C
B
magnetic flux density
note 1
−
0.2
T
av
vibration acceleration
10 to 2000 Hz; 3 axis;
IEC 68-2-6; Test Fc
−
10
g
as
shock acceleration
3 axis; IEC 68-2-27;
Test Ea
−
1500
g
Note
1. Resistivity against magnetic pulses.
ELECTRICAL CHARACTERISTICS
Period time T0 = 8 µs (f0 = 125 kHz); note 1.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
f0
resonant frequency
121
125
129
kHz
B
bandwidth
2.3
−
−
kHz
BTHR(p-p)
magnetic flux density for data transmission
from transponder (peak-to-peak value)
f0 = 125 kHz
35
−
400(2)
µT
BPRG(p-p)
magnetic flux density for programming the
EEPROM (peak-to-peak value)
f0 = 125 kHz; m = 0.95;
tLOW = 8T0
35
−
400(2)
µT
BAUTH(p-p)
magnetic flux density for mutual
authentication (peak-to-peak value)
f0 = 125 kHz; m = 0.95;
tLOW = 8T0
35
−
400(2)
µT
BREAD(p-p)
field absorption due to the modulation of the f0 = 125 kHz;
transponder (peak-to-peak value)
Bfield = 35 µT (p-p)
8
−
−
µT
MIPRG
modulation index (m) of the base station for
programming and authentication
95
−
100
%
f0 = 125 kHz;
Bfield = 35 µT (p-p);
tLOW = 8T0; see Fig.3
Notes
1. All parameters are characterized with the SCEMTEC test equipment (STM-1) available from SCEMTEC,
Reichshof-Wenrath, Germany. All parameters are guaranteed within the temperature range of Tamb = −40 to +85 °C.
2. Maximum available field strength of the test equipment. Transponder limit has not been characterized.
2001 Oct 01
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Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
Definitions:
B max – B min
m = ----------------------------------B max + B min
Bmax Bmin
m read = B max – B min
MGW174
Fig.3 Definition of modulation index.
MECHANICAL CHARACTERISTICS
The transponder is sealed in epoxy resin moulding compound. The designation of the package is SOT385-1
(see Chapter “Package outline”).
PARAMETER
VALUE
Mechanical dimensions
12 × 6 × 3 mm
Protection class
IP67
Casting material
epoxy resin
Transponder IC type
HT2ICS20
2001 Oct 01
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Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
PACKAGE OUTLINE
PLLMC: plastic leadless module carrier
SOT385-1
A1
D
A2
A
E1
α
E
A
D1
A3
A
Cross section
A-A
(not to scale)
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
UNIT
A
A1
A2
A3
D (1)
D1(1)
E (1)
E1(1)
α
mm
3.05
2.90
1.2
1.1
0.165
2.1
1.9
12.1
11.9
5.1
4.9
6.1
5.9
4.6
4.4
46
44o
o
Note
1. Plastic protrusions of 0.2 mm per side are not included.
OUTLINE
VERSION
REFERENCES
IEC
JEDEC
EIAJ
ISSUE DATE
01-06-27
SOT385-1
2001 Oct 01
EUROPEAN
PROJECTION
11
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
DATA SHEET STATUS
DATA SHEET STATUS(1)
PRODUCT
STATUS(2)
DEFINITIONS
Objective data
Development
This data sheet contains data from the objective specification for product
development. Philips Semiconductors reserves the right to change the
specification in any manner without notice.
Preliminary data
Qualification
This data sheet contains data from the preliminary specification.
Supplementary data will be published at a later date. Philips
Semiconductors reserves the right to change the specification without
notice, in order to improve the design and supply the best possible
product.
Product data
Production
This data sheet contains data from the product specification. Philips
Semiconductors reserves the right to make changes at any time in order
to improve the design, manufacturing and supply. Changes will be
communicated according to the Customer Product/Process Change
Notification (CPCN) procedure SNW-SQ-650A.
Notes
1. Please consult the most recently issued data sheet before initiating or completing a design.
2. The product status of the device(s) described in this data sheet may have changed since this data sheet was
published. The latest information is available on the Internet at URL http://www.semiconductors.philips.com.
DEFINITIONS
DISCLAIMERS
Short-form specification  The data in a short-form
specification is extracted from a full data sheet with the
same type number and title. For detailed information see
the relevant data sheet or data handbook.
Life support applications  These products are not
designed for use in life support appliances, devices, or
systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips
Semiconductors customers using or selling these products
for use in such applications do so at their own risk and
agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Limiting values definition  Limiting values given are in
accordance with the Absolute Maximum Rating System
(IEC 60134). Stress above one or more of the limiting
values may cause permanent damage to the device.
These are stress ratings only and operation of the device
at these or at any other conditions above those given in the
Characteristics sections of the specification is not implied.
Exposure to limiting values for extended periods may
affect device reliability.
Right to make changes  Philips Semiconductors
reserves the right to make changes, without notice, in the
products, including circuits, standard cells, and/or
software, described or contained herein in order to
improve design and/or performance. Philips
Semiconductors assumes no responsibility or liability for
the use of any of these products, conveys no licence or title
under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that
these products are free from patent, copyright, or mask
work right infringement, unless otherwise specified.
Application information  Applications that are
described herein for any of these products are for
illustrative purposes only. Philips Semiconductors make
no representation or warranty that such applications will be
suitable for the specified use without further testing or
modification.
2001 Oct 01
12
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
NOTES
2001 Oct 01
13
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
NOTES
2001 Oct 01
14
Philips Semiconductors
Product specification
HITAG 2 stick transponder
HT2DC20S20
NOTES
2001 Oct 01
15
Philips Semiconductors – a worldwide company
Contact information
For additional information please visit http://www.semiconductors.philips.com.
Fax: +31 40 27 24825
For sales offices addresses send e-mail to: [email protected]
© Koninklijke Philips Electronics N.V. 2001
SCA73
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Printed in The Netherlands
613502/02/pp16
Date of release: 2001
Oct 01
Document order number:
9397 750 08328