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PCF7936AS Datenblatt(PDF) 5 Page - NXP Semiconductors

Teilenummer PCF7936AS
Bauteilbeschribung  Security Transponder (HITAG2)
PDF  32 Pages
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Hersteller  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCF7936AS Datenblatt(HTML) 5 Page - NXP Semiconductors

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NXP Semiconductors
Product Specification
Security Transponder (HITAG2)
PCF7936AS
2010 May 04
5
CONFIDENTIAL
4
BLOCK DIAGRAM
The PCF7936AS features a high degree of integration and
incorporates the transponder chip, coil and capacitor
assembled in a leadless stick package, see Figure 1.
Security Transponder
• Contactless Interface
• EEPROM (256 bit)
• Control Logic
• Calculation Unit (security algorithm)
• Reset Logic
• Test Logic
Security Transponder
Security Transponder Chip
Calculation
Unit
Rectifier
Voltage Limiter
Contactless Interface
Control Logic
EEPROM
(256 Bit)
LF Field
Power On Reset
Modulator
Demodulator
Clock
Recovery
IN1
IN2
Test Logic
Resonance/antenna circuit
fRES = 125 kHz (typ)
Figure 1. Block Diagram
5
TYPICAL APPLICATION
Energy
Write
Read
Basestation
Analog
Interface
Serial
Interface
PCF 7991
To Micro-
controller
Inductive Link
fSYS = 125 kHz (typ)
Security Transponder
PCF 7936AS
Security Transponder Chip
Calculation
Unit
Rectifier
Voltage Limiter
Contactless Interface
Control Logic
EEPROM
(256 Bit)
LF Field
Power On Reset
Modulator
Demodulator
Clock
Recovery
Test Logic
Figure 2. Typical System Configuration



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