height convenience vehicle access Semiconductors' leading portfol

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Remote keyless entry transponder family PCF7x61
height convenience vehicle access
Semiconductors' leading portfolio vehicle security solutions includes true `single-chip' remote keyless entry family. Ideal today's advanced vehicle access applications, PCF7x61 security transponder, microcontroller radio transmitter compact designs offer cost-effective answers your remote access immobilization needs.
Features Single-chip security transponder keyless entry solution with on-chip transmitter PCF7936 family compatible transponder operation power RISC programmable device operation On-chip based transmitter (315/434 MHz) Programmable ASK/FSK modulation characteristics seven command button inputs Programmable `battery low' detection Full suite on-chip memory Kbytes E-ROM, Kbytes ROM, bytes EEPROM, bytes Factory programmed serial number (32-bit) Single lithium cell operation (2.1 20-pin TSSOP package (SOT360-1) Benefits power consumption Highly integrated minimum board space required Cost-efficient solution with Bill Materials Fully aligned with NXP's product family Easy application development remote keyless entry systems significantly improved passenger driver convenience today's cars. continues drive forward introduction keyless entry immobilization systems with highly integrated PCF7x61 family. Combining security transponder, RISC controller transmitter, this family delivers true single-chip solution range functions models. Based NXP's power 8-bit MICRO RISC KERNAL (MRK II), family performs command button scanning data framing according application requirements. RISC timing derived from on-chip tolerance oscillator with programmable system clock fast MHz. `Keyless Entry Code hopping' generation employ hard-wired transponder Calculation Unit software based algorithm, while synchronization achieved contactless transponder interface.
Except reference crystal loop antenna matching circuitry, on-chip transmitter requires other external components. RISC controller directly controls transmitter supports modulation with data rates kbit/s (Manchester). Powered external single-cell lithium battery, device features power down mode, minimizing quiescent current.
programmable power amplifier stabilizes output power minimize carrier, over temperature battery voltage variations. Security transponder operation compatible with PCF7936 family simplifying system upgrade, does require battery supply full transponder operation guaranteed event `battery low' condition. complete suite on-chip memory available providing sufficient storage application software
firmware. Extended data storage provided bytes on-chip EEPROM, with access control defined application. Kbytes intended device firmware library, while Kbytes E-ROM ROM) supports user application code. PCF7961 features FLASH-like programming application code easy system upgrade dedicated code version, PCF7361, high volume purposes also available.
CVFLD VFLD MSDA MSCL VBAT VDDA VDDPA PAOUT TRANSMITTER 434/315 TIMER MODULATOR
PCF7961 (PCF7361)
CONTACTLESS INTERFACE E-ROM (ROM) RISC (MRK byte byte EEPROM CALCULATION UNIT
INTERRUPT CONTROL
OSCILLATOR
POWER MANAGEMENT
Note Button inputs generic I/O, however external p'up resp. p'down required
VSSA
VSSPA
buttons
bra232
www.nxp.com
Semiconductors process being established separate legal entity various countries worldwide. This process will finalized course 2006. 2006 Koninklijke Philips Electronics N.V. rights reserved. Reproduction whole part prohibited without prior written consent copyright owner. information presented this document does form part quotation contract, believed accurate reliable changed without notice. liability will accepted publisher consequence use. Publication thereof does convey imply license under patent- other industrial intellectual property rights. Date release: September 2006 Document order number: 9397 15734 Printed Netherlands

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