RADIO FREQUENCY IDENTIFICATION SYSTEMS Entry Transponder IC TMS37134 Base station in the car Identification device UHF UHF receiver Control Unit TMS 37134 The Entry Transponder (ET) IC combines the proven TI DST+ transponder with a sophisticated power management; it has an SPI interface to connect it to an external micro-controller, ideally suited for Remote Keyless Entry applications for automotive. The embedded DST+ transponder offers a high level of security through its encryption, mutual authentication and after-theft diagnosis features; it operates without battery. The power management features battery charge and battery check functions, which can be used for charging of the battery through the transponder LF field. LF Transceiver µC LF Specifications: Part Number TMS 37134 Features Immobilizer plus power management Immobilizer compatible to DST+ (E9WK ) Battery Check / Charge function Supply Voltage 1.8 … 3.6 V Current consumption 100µA (max.) @3V Transponder Transmission Principle HDX (Half Duplex), FDX ( Full Duplex using amplitude Modulation) Operating Frequency 134.2 kHz Modulation Downlink (to the TRP) 100% AM, Bit Coding PWM or PPM Security TI Challenge/Response, Mutual Authentication, Secure Issuer Access Mode Encryption, Mutual Authentication, Issuer Key Each 40 bit Encryption response (signature) 24 bit Modulation Downlink (to the TRP) 100% AM, Bit Coding PWM or PPM Datarate Downlink PWM: typ. 1,3kBit / PPM: typ. 2kBit EEPROM Memory Read Time for an Encryption 127Byte (lockable) for User data, 25Byte for Encryption Keys, serial#, fi ti < 120 ms Activation Field Strength 137.5dBµA/m Operating Temperature -40 to +85°C Storage Temperature -40 to +125°C Package 20 Pin TSSOP PW For more information, contact the sales office or distributor nearest you. This contact information can be found on our web site at: http://www.ti-rfid.com Texas Instruments reserves the right to change its products and services at any time without notice. TI provides customer assistance in various technical areas, but does not have full access to data concerning the uses and applications of customers products. Therefore, TI assumes no responsibility for customer product design or for infringement of patents and/or the rights of third parties, which may result from assistance provided by TI. © Copyright 2002 Texas Instruments Incorporated. Data Sheet: 11-07-22-007 11/03