TK5551_06 Datasheet, PDF (1/12 Pages) ATMEL Corporation – Standard Read/Write ID Transponder with Anti-collision

,Features
• Read/Write Anti-collision ID Transponder in Plastic Package
• Contactless Read/Write Data Transmission
• Inductive Coupled Power Supply at 125 kHz
• Basic Component: R/W IDIC^® e5551
• Anti-collision Mode by Password Request
– E.g. 10 Transponders Read Out in < 500 ms (RF/32, Maxblock 2) Depending on the
Application
• Built-in Coil and Capacitor for Circuit Antenna
• Starts with Cyclical Data Read Out
• 224-bit EEPROM User Programmable in 32-bit Blocks
• Typically < 50 ms to Write and Verify a Block
• Write Protection by Lock Bits
• Malprogramming Protection
• Options Set by EEPROM
– Bit Rate [bit/s]: RF/8, RF/16, RF/32, RF/40, RF/50, RF/64, RF/100, RF/128
– Modulation: BIN, FSK, PSK, Manchester, Bi-phase
Application
• Access Control Systems
• Process Control and Automation Systems
• Installation and Medical Equipment
• Asset Management Systems
Standard
Read/Write ID
Transponder
with
Anti-collision
TK5551
1. Description
The TK5551 is a completely programmable R/W transponder which implements all
important functions for identification systems, including anti-collision (e.g., 10 tran-
sponders in < 500 ms depending on the application). It allows the contactless reading
and writing of data which are transmitted bi-directionally between a read/write base
station and the transponder. It is a plastic-packaged device which accommodates the
IDIC e5551 and also the antenna 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 are transmitted by modulating the amplitude
of the RF field. The TK5551 can be used to adjust and modify the ID code or any other
stored data, e.g., rolling code systems. The on-chip 264-bit EEPROM (8 blocks,
33 bits per block) can be read and written block wise from the base station. The
blocks can be protected against overwriting. One block is reserved for setting the
operation modes of the IC. Another block can obtain a password to prevent unautho-
rized writing.
4709F–RFID–06/06