PCF7936AS_V01 [NXP]
Security Transponder, HITAG 2;
| 型号： | PCF7936AS_V01 |
| 厂家： | 
NXP |
| 描述： | Security Transponder, HITAG 2 |
| 文件： | 总1页 (文件大小：39K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Philips Semiconductors
Product Profile
PCF7936AS
Security Transponder, HITAG 2
Features
General Description
The PCF7936, HITAG 2 is a programmable Security
Transponder employing mutual authentication ideally
suited for contactless authentication and memory
access between a basestation and the transponder.
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Programmable Security Transponder
64/32 bit mutual authentication
32 bit unique device dentification number
48 bit Secret Key
The transponder meets the security and performance
requirements of modern vehicle immobiliser
applications. Excellent device sensitivity (large
distance) and short authentication time ensure easy
application and outstanding system performance.
Fast authentication, 39 ms
128 bit non-volatile user memory (EEPROM)
EEPROM access in plain or cipher mode
EEPROM read/write protection capabilities
Read Only modes for downward compatibility
The transponder provides 256 bit of non-volatile
memory (EEPROM) from which 128 bit are reserved
for user data storage. User data and configuration data
may be exchanged in cipher mode for advanced pre-
personalisation techniques. Memory access flags
support read and/or write protection of data.
Excellent device sensitivity in read and write
mode, 35 mT
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20 year EEPROM data retention
Leadless stick shaped plastic package
The device performs a fast mutual authentication
algorithm, employing a Random Number, Secret Key
and Passwords. In addition the HITAG 2 features a
factory programmed 32 bit unique identification number
to enable unambiguously device identification.
The HITAG 2 features two Read Only modes for
downward compatibility with common Read Only
systems.
The transponder power supply and system clock is
derived from the magnetic component of the RF field
generated by the basestation. Due to low power
consumption the HITAG 2 provides excellent sensitivity
in read and write mode.
The transponder is assembled in a small leadless stick
shaped plastic package.
Block Diagram
Stick Package Outline
PCF7936AS
11,9-12,1
All Dimensions [mm]
A
Contactless Interface
Control Logic
Rectifier
Voltage Limiter
Data Acquisition
EEPROM
Access Control
Power-On Reset
Clock Recovery
Modulator
A
Calculation Unit
C
L
1,9-2,1
4,9-5,1
Cross Section A-A
( without Scale )
Demodulator
EEPROM
Transponder IC
July 1998
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