PCF7936AS/3851/C,1-CT NXP Semiconductors, PCF7936AS/3851/C,1-CT Datasheet - Page 5

• Manufacturer Part Number: PCF7936AS/3851/C,1-CT
• Description: pcf7936as series 32-bit 125 khz read / write security...
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Security Transponder (HITAG2)
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.
5 TYPICAL APPLICATION
2010 May 04
Figure 1. Block Diagram
Figure 2. Typical System Configuration
controller
To Micro-
Basestation
f
SYS
Interface
Interface
Analog
Inductive Link
Serial
Security Transponder
Resonance/antenna circuit
f
RES
= 125 kHz (typ)
PCF 7991
= 125 kHz (typ)
Energy
Write
IN1
IN2
Read
Contactless Interface
Power On Reset
Voltage Limiter
Demodulator
Test Logic
Modulator
Recovery
5
Rectifier
Security Transponder Chip
LF Field
Security Transponder
PCF 7936AS
Clock
Security Transponder
•
•
•
•
•
•
Contactless Interface
EEPROM (256 bit)
Control Logic
Calculation Unit (security algorithm)
Reset Logic
Test Logic
Control Logic
Calculation
Contactless Interface
EEPROM
(256 Bit)
Power On Reset
Voltage Limiter
Unit
Demodulator
Modulator
Test Logic
Recovery
Security Transponder Chip
Rectifier
LF Field
Clock
Control Logic
Product Specification
Calculation
EEPROM
(256 Bit)
Unit
PCF7936AS
CONFIDENTIAL