900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






Philips

PCF7941 Datasheet Preview

PCF7941 Datasheet

Security Transponder and RISC Controller

No Preview Available !

www.DataSheet4U.com
Philips Semiconductors
Product Profile
Preliminary Information
PCF7941
Security Transponder and RISC Controller, STARC lite
Features
General Description
Compatible with Security Transponder, PCF7936AS.
RISC Programmable Keyless Entry features
384 Bit EEPROM
The PCF7941 is a single chip high performance Security
Transponder and Keyless Entry controller, ideally suited for
vehicle immobilizer applications that incorporate keyless entry
functions.
16-Pin SO package
Transponder
64/32 bit mutual authentication calculation unit
The transponder circuitry is compatible with the Security
Transponder PCF7936AS, for use in mixed systems that
employ a STARC and a standard Security Transponder,
PCF7936AS, at the same time.
32 bit unique device identification number
4t 8 bit Secre Key
The Transponder circuitry meets the security and
performance requirements of modern car immobilizer
Fast mutual authentication (39 ms)
EEPROM read/write protection capability
E5xcellent sensitivity in read and write mode (3 µT)
applications. Excellent device sensitivity and short
authentication time ensure outstanding system performance.
The Transponder circuitry does not require any battery supply
and full operation is granted in a Keyless Entry battery low
RISC Controller
Advanced 8-bit RISC architecture
4 Kbyte ROM, 64 Byte RAM
condition.
The RISC Controller circuitry is powered by an advanced low
power 8-Bit RISC. The device features 11 I/O ports including
up to four wake-up inputs for command button sensing.
O<n-chip RC oscillator ( ±10%)
Short instruction execution time (as fast as 1µs)
Code hopping generation may employ the transponder
Calculation Unit, while telegram transmission characteristics
11 I/O ports, general purpose
are controlled by the RISC. If the same security algorithm is
Code hopping based on transponder calculation unit
applied for the Transponder and the Code Hopping function,
Code hopping synchronization via transponder
www.DataSheet4U.comClock input to serve as external data rate reference
separate Secret Keys are provided to ensure independent
code characteristics. Contactless code hopping
synchronization may be accomplished via the conatctless
Programmable battery low detection
interface.
Low power consumption (300 µA, PD 300 nA)
Single battery cell operation (2.1V to 5.5V)
Device supply can be derived from LF Field
The system timing is derived from a low tolerant on-chip RC-
Oscillator. If desired, an external data rate reference clock
may be applied for use with common PLL transmitter devices.
Typical Application
optional
VDD
VBAT
PCF7941
P15 (XCLK)
P17 (DOUT)
Security Transponder
RISC Controller
P16 (XON)
Transmitter
IR
or
UHF (PLL)
IN1 EEPROM
384 Bit
Calculation
Unit
Timer
Modulator
Interrupt
Control
P14 (LED)
P20 User
P21 Extensions
P22
P13 (B3)
IN2
Control
Logic
RC
Oscillator
P12 (B2)
P11 (B1)
P10 (B0)
Power Management
VSS Buttons
Li
3V
November 1999
DataSheet4 U .com
www.DataSheet4U.com


Part Number PCF7941
Description Security Transponder and RISC Controller
Maker Philips
Total Page 1 Pages
PDF Download

PCF7941 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 PCF7941 Security Transponder and RISC Controller
Philips
2 PCF7941ATJ Security Transponder and RISC Controller
NXP
3 PCF7946AT Security Transponder Plus Remote Keyless Entry
Philips





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy