ATMEL E5530H-232-DIT

Features
•
•
•
•
•
•
•
Low-power, Low-voltage CMOS
Rectifier, Voltage Limiter, Clock Extraction On-chip (No Battery)
Small Size
Factory Laser Programmable ROM
Operating Temperature Range -40°C to +125°C
Radio Frequency (RF): 100 kHz to 450 kHz
Transmission options
– Code Length: 128, 96, 64, 32 bits
– Bitrate [bit/s]: RF/8, RF/16, RF/32, RF/40, RF/50, RF/64, RF/80, RF/100, RF/128
– Modulation: FSK, PSK, BIPH, Manchester, BIPH-FSK
• FDX-B Compatible Coding Possible (ISO 11784/ ISO 11785)
Figure 1. Application
RF transmitter
and
interrogator
128-bit
Read-only
IDIC for RF
Identification
IDIC
RF
e5530
e5530
ID
Description
The e5530 is part of a closed coupled identification system. It receives power from an
RF transmitter which is coupled inductively to the IDIC. The frequency is typically
100 kHz to 450 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 interrogator. 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 2. The data are output bit-serially as a code of length
128, 96, 64 or 32 bits. The chips are factory-programmed with a unique code.
Figure 2. Block Diagram
Analog front end
Mod
Coil
Clk
Data
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
Modulator
FSK
PSK
BIPH
Manchester
Row decoder
Load
Coil
Rectifier
Bitrate
VDD
VSS
A6
A5
A4
A3
A2
A1
A0
Column decoder
Counter
Rev. 4508B–RFID–02/02
1
Chip Dimensions
Figure 3. Chip Size
Figure 4. Pinning SO8
0.175 mm
Coil 2
e5530
1.17 mm
0.447 mm
Coil 1
Coil 2
Pad: 150 µ x 150 µ (Metal: 99% Al, 1% Si
8
1
2
Coil 1
7
e5530
3
6
4
5
Padwindow: 138 µ x 138 µ
1.62 mm
Thickness: 15 mils
Note: Pins 2 to 7 have to be open. They are
not specified for applications
Name
Pad Window
Function
Coil1
138 × 138 µm2
1st coil pad
Coil2
138 × 138 µm2
2nd coil pad
Functional Description
Read Operation
After power up, once the e5530 has detected the incoming RF field, the IC continuously
transmits the identification code as long as the RF signal is applied. The transition from
the last bit to bit 1 of the next sequence occurs without interruption. Data is transmitted
by damping the incoming RF signal by an internal load. These load changes are
detected by the reader station.
Different kinds of modulation and bitrates are optionally available.
Rectifier
For internal power supply, an on-chip bridge rectifier is used which consists of two
diodes and two n-channel transistors. A Zener diode, which protects the circuit against
overvoltage on the coil inputs, and a smoothing capacitor for the internal supply are also
provided.
Damping Load
Incoming RF will be damped by the power consumption of the IC itself and by an
internal load, which is controlled by the modulator. The loads are p-channel transistors
connected between VDD and the coil inputs.
The IDIC includes mask options for the load circuit: single-side, double-side and
alternate-side modulation.
There are four modulation methods available which can be selected by fuses. The
corresponding timing diagram is shown in Figure 5.
2
e5530
4508B–RFID–02/02
e5530
FSK Modulation
Logical data “1” and “0” are represented as two different frequencies of damping. The
frequency for “1” is RF divided by 10, a “0” divides RF by 8.
PSK Modulation
The external coil is damped with a carrier frequency of RF/2. A logical “1” causes (at the
end of the bit period) a 180° phase shift on the carrier frequency, while a logical “0”
causes no phase shift.
Biphase Modulation
Logical “1” produces a signal which is the same as the internal bitclock. A logical “0”
produces no signal change in the middle of the bit period.
Manchester Modulation
A logical “1” causes a rising edge in the middle of a bit period (i.e., switch damping off),
while a logical “0” causes a falling edge (i.e., switch damping on).
A combination of Biphase- and FSK-modulation is also optionally available. The
available combinations between the modulation types and the bitrates are shown in
Table 1 “Transmission Options”.
Table 1. Transmission Options
Modulation
Carrier Frequency (CF)
Bitrate [bit/s]
FSK
RF/8, RF/10
RF/32, RF/40, RF/50, RF/64, RF/80, RF/100,
RF/128
PSK
RF/2
CF/4, 8, 16, 32
Biphase
RF/8, RF/16, RF/32, RF/64, RF/100, RF/128
Manchester
RF/8, RF/16, RF/32, RF/64, RF/100, RF/128
Figure 5. Timing Diagram for Modulation Options
BitClk
Data
1
0
1
1
0
0
1
FSK
PSK
Man
Biph
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4508B–RFID–02/02
Reading Distances
The e5530 is able to operate from very weak fields. Nevertheless, there are some
general rules which influence the achievable reading distance.
•
Best results are accomplished when the transponder points towards the reader coil.
•
The transponder should not be embedded in metal, which will reduce the applicable
magnetic field and thus the reading distance.
•
The strength of the generated magnetic field and the sensitivity of the demodulator
are the most important factors for a good reading distance.
Figure 6. Example for a 64-bit Code
E6
00 00 00 10 2D 72 5D
Header
56-bit ID code
The identification code is transmitted continously. After the RF field is applied, the
e5530H-232 starts with the first bit (MSB) of the header byte ’E6hex’ (’1110 0110’),
followed by a unique 56-bit serial number. No checksum is included in this sample code.
Pulsing the RF field may reduce the synchronization task as the first byte transmitted is
known already (i.e., E6hex). This is even feasible, if the first bit may be lost due to
reader synchronization problems.
Customer ID Code
Selection
In general the customer may choose any ID code suitable to his application. To avoid
code duplication, Atmel will define a fixed header – i.e, the first 8 bits of the code – for
each customer.
Modes of Operation –
Options
For any new product variant, the customer has to select the following operation options
which are configured in the laser ROM as well:
•
Bitrate, which is defined as field clocks per bit (e.g., RF/40 = 125 kHz/40 =
3.125 kBit/s) (see table Table 1 “Transmission Options”)
•
Modulation method (see Figure 5)
•
Code length: 32, 64, 96 or 128 bits
For programming the ID code into the laser ROM, one of the following data has to be
supplied:
•
ID code algorithm which is implemented in Atmel’s code management software
(Atmel will generate the codes as requested)
•
Customer generated ID codes on floppy disk or per email/ftp.
The format has to comply to the following rules:
4
–
The ID code file is a plain ASCII text file.
–
The code files should be compressed. Please make self extracting files.
–
The code files are used in alphabetical order of their file names (including
letters and numbers). Used - i.e. programmed - code files are discarded.
–
Each line of the code file must contain one ID code for one IC.
–
The code is in hexadecimal format. The code may contain spaces for better
readability.
e5530
4508B–RFID–02/02
e5530
–
The code line is exactly as long as the selected code length (e.g. 64 bits 16
hex numbers).
–
The line must end with a carriage return.
–
The first 8 bits are fixed, this is the unique customer header which is defined
by Atmel.
–
Each hexadecimal code entry must be preceded by a decimal serial number.
Serial number and code must be separated by a space.
–
The serial number has to be unique and is up-counting to avoid double
programming.
–
The series numbers of two consecutive files (file name!) has to count also
for proper linking.
Figure 7. Example of Two Code Files with Header = E6 and 64-bit Code Length
FILE0000.TXT
00001
00002
00003
...
...
12345
File name
E65F34E25801904F
E634E25801904FAA
E6910AG7000010FE
Code file
E610ABE4F9014821
Last code
Carriage return
8-bit header
Space necessary
Series number
FILE0001.TXT
12346 E6A04EB73087FCC0
12347 E60178DC00F03460
...
Next
code
Absolute Maximum Ratings
Parameters
Symbol
Value
Unit
Maximum current into Coil1 and Coil2
Icoil
10
mA
Maximum power dissipation (dice)
Ptot
100
mW (1)
Maximum ambient air temperature with voltage
applied
Tamb
-40 to +125
°C
Storage temperature
Tstg
-65 to +200
°C
Note:
1. Free-air condition. Time of application: 1 s
Stresses above those listed under ‘Absolute Maximum Ratings’ may cause permanent damage to the device.
Functional operation of the device at these conditions is not implied.
5
4508B–RFID–02/02
Electrical Characteristics
Tamb = 25°C, reference terminal is VDD, operating voltage VDD - VSS = 3 V DC, unless otherwise specified
No.
Parameters
Test Conditions
1
Operating voltage
Condition for logic test
2
Operating temperature
3
Input frequency (RF)
4
Operating current
fCLK = 125 kHz, VSS = -2 V
ICC
5
Clamp voltage
I = 4 mA
VCL
Note:
Symbol
Min.
VSS
Typ.
Max.
Unit
-1.5
-5.0
V
Tamb
-40
125
°C
fCLK
100
450
kHz
3 (1)
6.7
mA
10
V
1. Typical parameters represent the statistical mean values
Figure 8. Measurement Setup for IDD
I
Figure 9. Simplified Damping Circuit
DD
100 Ω
VDD
~2V
Coil 1
Coil 1
~
=
Mod
2V
Coil 2
Coil 2
VSS
100 Ω
~2V
V pp Coil @1.5 V
Application Example
Figure 10. Typical Application Circuit
From
oscillator
I
AC
125 kHz
740 µH
4.05 mH 390 pF
Energy
Input capacitance
5 pF static, 4 pF
dynamic
Coil1 (Pin 8)
e5530
(SO8)
Data
To read
amplifier
Coil2 (Pin 1)
2.2 nF
6
e5530
4508B–RFID–02/02
e5530
Ordering Information
Extended Type
Number
Package
e5530H-232-DOW
e5530H-232-DIT
e5530H-232-S8
DOW
DIT
SO8
Manchester
e5530H-zzz-DOW (1)
e5530H-zzz-DIT (1)
e5530H-zzz-S8 (1)
DOW
DIT
SO8
defined by customer
Note:
Data
Rate
Modulation
RF/32
Configuration
Checksum
64-bit
no
checksum
Header
E6
ID
Code
fixed
and
unique
code
SPQ
(Minimum
Volume)
Minimum
Order Volume
10 kpcs
10 kpcs
1120
10 kpcs
10 kpcs
1120
> 600 kpcs p.a.
> 600 kpcs p.a.
> 400 kpcs p.a.
1. 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) 5.000 US$ initial cost for customer specific laser-fusing
4) Lead time 3 month
5) Low volume customized applications may be covered by TK5551-PP programming.
With identical features of TK5530H-zzz-PP possible
Order Code
The full order code for the e5530is e5530H-zzz-pkg or e5530G-zzz-pkg, where zzz is a customer specific number defined
by Atmel. pkg (package) defines the delivery form:
- DOW
factory programmed, tested unsawn, backlapped (15 mils) wafers
- DIT
cutted chips in wafflepack (Dice In Tray)
- S8
SO8-packaged parts
Samples: Atmel supplies e5530 samples, which are set to Manchester modulation at RF/32 with a 64-bit ID code (order
code: e5530H-232 S8)
Package Information
Package SO8
Dimensions in mm
5.2
4.8
5.00
4.85
3.7
1.4
0.25
0.10
0.4
1.27
6.15
5.85
3.81
8
0.2
3.8
5
technical drawings
according to DIN
specifications
1
4
7
4508B–RFID–02/02
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© Atmel Corporation 2002.
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
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Printed on recycled paper.
4508B–RFID–02/02
xM