Compact, single-chip solution
for remote keyless entry
Key features
``Single-chip`security`transponder`and`keyless`entry`solution
``16-bit`Harvard`architecture
``On-chip`UHF`transmitter`(315`/`434`/`868`/`915`MHz`band)
``Transponder`emulation`based`on`HT3,`HT-AES,`or`HT-Pro`2
``Calculation`unit`supporting`HT3`(96-bit)`and`AES`(128-bit)
``16`KB`user`EROM`for`application
``2`KB`ultra-low-power`EEPROM
``1`KB`RAM
``Up`to`eight`command`buttons`with`wake-up`function
``I/O`with`current`source`for`direct`LED`drive
``Stabilized`RF`output`power
``Temperature`sensor
```Single`lithium`cell`operation`(2.1`to`3.6`V)
```C-compiler`supported`software`development
```HVQFN24`(4`x`4`mm)`with`wettable`anks
Applications
``Combo-Key`applications`that`combine`remote`keyless`entry`
with`vehicle`immobilization
Delivering`rugged`performance`in`a`very`small`(4`x`4`mm)`footprint,`this`highly`integrated`solution`
maximizes`design`freedom`and`is`ideal`for`advanced`Combo-Key`applications.`Special`features`of`
the`integrated`RF`transmitter`support`frequency`hopping`and`ensure`reliable`operation`even`in`
RF-jammed`environments.
The`NXP`NCF2960`is`a`second-generation`Combo-key`solution`
that`combines`a`transponder,`a`microcontroller,`and`a`radio`
transmitter`in`a`tiny`(4`x`4`mm)`footprint.`
The`basic`transponder`operation`is`compatible`with`NXP’s`
security`transponder`families,`including`HT3,`HT-AES,`and``
HT-Pro2.`Custom`transponder`functions`can`be`implemented`
using`the`ROM`library`of`the`device`by`the`application.
The`transponder`circuitry`is`powered`from`the`LF`eld`and`
does`not`require`a`device`battery`supply.`As`a`result,`full`
operation`is`possible`even`when`the`battery`is`low.`
The`RISC`controller`uses`NXP’s`third-generation`Micro`RISC`
Kernel`(MRK`III),`a`low-power`implementation`that`features`
a`16-bit`architecture`and`executes`instructions`in`a`single`
machine`clock`cycle.
NXP remote keyless entry
transponder combo IC
NCF2960
www.nxp.com
© 2012 NXP Semiconductors N.V.
All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The
information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and
may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof
does not convey nor imply any license under patent- or other industrial or intellectual property rights.
Date of release: August 2012
Document order number: 9397 750 17233
Printed in the Netherlands
The`on-chip`UHF`transmitter`requires`only`a`single`27.6`MHz`
reference`crystal`and`loop`antenna`matching`circuitry`to`operate`
in`one`of`the`following`bandwidths:``315`/`434`/`868`/`915`MHz`
bands.`The`RF`multi-channel`capability`enables`frequency`
hopping`and`ensures`reliable`operation`in`RF-jammed`environments.
There`are`up`to`eight`I/O`ports,`with`one`designed`for`use`with`a`
dedicated`LED`driver`port,`and`up`to`eight`inputs`for`command`
buttons.`There`is`a`temperature`sensor`for`battery`management`
and`an`on-chip`pseudo-random`number`(PRN)`generator`for`use`
with`security`protocols.`
A`fractional-N`PLL`allows`compensation`for`initial`XTL`tolerance.`
The`device`includes`2`KB`of`ultra-low-power`serial`EEPROM`
memory`(with`access`control`dened`by`the`application),`1`KB``
of`RAM,`and`up`to`16`KB`of`Flash-like`EROM`for`the`application`
code.`The`keyless`entry`code`can`be`generated`by`the`built-in,`
hardwired`calculation`unit`or`by`a`software-based`algorithm.`
The`device`is`housed`in`a`tiny`24-pin`HVQVN`package`that`
consumes`only`16`mm2`of`board`space,`so`it`enables`ultra-
compact`designs`with`maximum`freedom`for`key`styling.`
Wettable`package`anks`allow`optical`soldering`inspection`
without`an`x-ray.
The`Flash-like`EROM`of`the`device`supports`in-circuitry`
programming`and`debugging`of`the`application`code.
NCF2960 application diagram
24-pin HVQN package (4 x 4 mm) NCF2960 demo board
