TK5552A-PP

TK5552A-PP Datasheet


TK5552

Part Datasheet
TK5552A-PP TK5552A-PP TK5552A-PP (pdf)
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• Contactless Read/Write Data Transmission
• 992-bit EEPROM User Programmable in 31 Blocks 32 Bits
• Inductively Coupled Power Supply at 125 kHz
• Basic Component R/W IDICÒ Transponder IC
• Built-in Coil and Capacitor for Circuit Antenna
• Starts with Cyclical Data Read Out
• Typical < 50 ms to Write and Verify a Block
• Modulation Defeat for EAS
• Direct Access to Each Block
• Configurable POR Delay
• Write Protection by Lock Bits
• Malprogramming Protection
• Configurable Options:

Bit Rate [Bit/s] RF/16 and RF/32

Modulation Manchester

POR Delay 1 ms/65 ms

Maximum Block 0, 1, 1 to 2, 1 to 3, 1 to 4, 1 to 31

Read/Write Transponder

TK5552
• Industrial Asset Management
• Process Control and Automation
• Installation and Medical Equipment

The TK5552 is a complete programmable R/W transponder that implements all important functions for identification systems. It allows the contactless reading uplink and writing downlink of data which are transmitted bi-directionally between a read/write base station and the transponder. It is a plastic cube device which accomodates the IDIC transponder IC and the antenna is realized as an LC circuit. No additional external power supply is necessary for the transponder because it receives power from the RF field generated by the base station. Data is transmitted by modulating the amplitude of the RF field uplink mode . The TK5552 can be used to adjust and modify the ID code or any other stored data, e.g., rolling code systems. The on-chip 1056-bit EEPROM 32 blocks, 33 bits per block can be read uplink and written downlink blockwise from the base station. The blocks can be protected against overwriting. One block is reserved for setting the operation modes of the IC.

Figure Transponder and Base Station RF field

Power Data

Transponder TK5552 Transponder IC + coil + C in plastic cube

Transponder IC

Coil

Base station 1
1 For a short distance U2270B read/write IC with MARC4 see Figure 12

General

The transponder is the mobile part of a closed coupled identification system see Figure 1 , where the read/write base station incorporates a reader IC such as the U2270B, and the read/write transponder is based on the transponder IDIC.

The transponder is a plastic cube device consisting of the following parts
• The transponder antenna, realized as a tuned LC circuit
• The read/write IDIC transponder IC with EEPROM

Transponder 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 to improve the distance of read uplink and write downlink operations.

Read/Write IDIC

The read/write Transponder IDIC is part of the transponder TK5552. The data is transmitted bi-directionally between the base station and the transponder. The transponder receives power via a single coil from the RF signal generated by the base station. The single coil is connected to the chip and also serves as the IC's bi-directional communication interface.

Data transmission is done by modulating the amplitude of the RF signal. Reading uplink occurs by damping the coil by an internal load. Writing downlink occurs by interrupting the RF field in a specific way. The TK5552 transponder operates at a nominal frequency of 125 kHz. Different bit rates and encoding schemes are available.

The on-chip 1056-bit EEPROM 32 block, 33 bits each can be read uplink and written downlink blockwise from the base station. The blocks can be protected against overwriting by using lock bits. One block is reserved for setting the operation modes of the IC.

See section “Transponder IC Read/Write Identification IC with 1k-bit Memory”.
2 TK5552

Clock-A Input register

Modulator Clock-B

Figure Block Diagram Transponder IC

Analog front end rectifier, regulator, clock extractor, ESD protection

Charge pump

Start-up delay

Bit rate generator

Bit decoder

Controller

Mode register

EEPROM memory

TK5552

Absolute Maximum Ratings

Parameters Operating temperature range Storage temperature range Maximum assembly temperature, t < 5 min. Magnetic field strength at 125 kHz
Ordering Information

Extended Type Number

Package

Remarks

TK5552A-PP

Plastic cube

Various kinds of modulation RF/16 and RF/32 1 Programmed by default Manchester modulation, RF/16, MAXBLK = 1 to 31

Note See section “Transponder IC Read/Write Identification IC with 1k-bit Memory”

Package Information

Transponder IC Read/Write Identification IC with 1k-bit Memory
• Low Power, Low Voltage Operation
• ESD Protection > 8 kV HBM
• Optimized for Flip Chip Die Attach Processes
• Contactless Power Supply
• Contactless Read/Write Data Transmission
• Radio Frequency RF 100 kHz to 150 kHz
• 1056 Bits of EEPROM Memory
• 992 Bits 31 32 Bits of User Memory
• Defined Start of Data Transmission
• Auto-verify after EEPROM Programming
• Block Write Protection for Each Block
• Configurable Options Include:

Modulation Type PSK/Manchester

Bit Rate [Bit/s] RF/16 / RF/32

Number of Readable Blocks Modulation Defeat POR Start-up Delay » 1 ms / » 65 ms

Functional Description

The transponder IC is a two-terminal, contactless R/W-IDentification IC IDIC for tag applications in the 125 kHz ±25 kHz range. The IC uses the external RF signal to generate its own power supply and internal clock reference.

The IC contains a total of 1056 bits of EEPROM memory grouped into 32 individually addressable data blocks. Each block is made up of 32 bits of data plus an associated lock bit for block write protection. Blocks 1 to 31 are provided for user related data and block 0 for system configuration.

Data is transmitted from the IC uplink using reflective load back scatter modulation. This is achieved by damping the external RF field by switching a resistive load between the two terminals Clock-A/Clock-B. The IC receives and decodes amplitude modulateddata from the base station.

As soon as the tag including the transponder IC is exposed to an RF field providing that the field is strong enough to derive enough energy to operate , the tag will respond by continuously transmitting stored data uplink mode . The base station can, at any time, switch the tag to downlink mode to write new user or configuration data. Generally, the tag will automatically return to the default uplink mode when the downlink transfer is completed, interrupted or an error condition occurs.

Figure Transponder System Example Using Transponder IC

Transponder

ACnoaillo ignftreorfntaecned Controller

Base station

Power

Data downlink

Data uplink

Memory Transponder IC
10 TK5552

Functional Modules

Analog Front End AFE

Controller

Clock Extraction Data Rate Generator Bit Decoder Charge Pump Power-On Reset POR Mode Register Modulator

TK5552

The Analog Front End AFE includes all circuits which are directly connected to the coil. It generates the IC's power supply and handles the bi-directional data communication with the base station. It consists of the following blocks
• Rectifier to generate a DC supply voltage from the AC coil voltage
• ESD protection
• Clock extractor
• Switchable load between Clock-A/Clock-B for data transmission from the IC to the
reader electronics uplink mode
• Field gap detector for data transmission from the base station to the IC
downlink mode

The control logic is responsible for the following
• Initializing and refreshing configuration register from EEPROM block 0
• Controlling read and write memory access
• Handling data transmission and opcode decoding
• Error detection and error handling

The clock extraction circuit generates the internal clock source out of the external RF signal.

The data rate in uplink mode can be selected to operate at either RF/16 nominally kHz, default or RF/32 nominally kHz .

This functional block decodes the field gaps and verifies the validity of the incoming data stream.

This circuit generates the high voltage required for programming the EEPROM.
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Datasheet ID: TK5552A-PP 519431