Continental Automotive GmbH 17A920790 Manuale Utente
Keller, I ID S3 AD AE 1
Page 5
23.10.2017
True 32 bit identifier (Long ID)
Secret-Key in EEPROM (unreadable)
Free User Memory (UM)
Data transmission performed by amplitude modulation
Transmission rate for 125 kHz transponder communication: 4 kbauds
Special protected dataset storage intended for mileage counter
Lock-bits to inhibit programming
Operating temperature range -40 to +85°C
125 kHz field frequency
On chip rectifier and voltage limiter
Secret-Key in EEPROM (unreadable)
Free User Memory (UM)
Data transmission performed by amplitude modulation
Transmission rate for 125 kHz transponder communication: 4 kbauds
Special protected dataset storage intended for mileage counter
Lock-bits to inhibit programming
Operating temperature range -40 to +85°C
125 kHz field frequency
On chip rectifier and voltage limiter
4
Power supply
Because ANT drivers drive antenna with VDD and VSS power supply levels all variations and noise in
power supply are directly fed to antenna resonant circuit. Any supply voltage fluctuations or ripple are
transferred into antenna current fluctuations by the antenna driver transistors. This is equal to a current
modulation that results in a voltage modulation at the antenna tap point. There is no possibility for the
demodulator to distinguish this modulation from the transponder modulation (transponder signal
superimposed on antenna voltage is in the range of tens of mV). Especially in the pass band of the
demodulator filters (<10 kHz), the system is very sensitive against supply hum and ripple.
For this reason a separate linear voltage regulator is used for the immobilizer circuit. The Enable pin of this
regulator is controlled by the microcontroller. The regulator is only enabled during transponder
communication.
KL30 voltage for guaranteed immobilizer function and performance:
Minimum Operating Voltage = 6,5V
Nominal Operating Voltage = 13,5V
Maximum Operating Voltage = 17,0V
power supply are directly fed to antenna resonant circuit. Any supply voltage fluctuations or ripple are
transferred into antenna current fluctuations by the antenna driver transistors. This is equal to a current
modulation that results in a voltage modulation at the antenna tap point. There is no possibility for the
demodulator to distinguish this modulation from the transponder modulation (transponder signal
superimposed on antenna voltage is in the range of tens of mV). Especially in the pass band of the
demodulator filters (<10 kHz), the system is very sensitive against supply hum and ripple.
For this reason a separate linear voltage regulator is used for the immobilizer circuit. The Enable pin of this
regulator is controlled by the microcontroller. The regulator is only enabled during transponder
communication.
KL30 voltage for guaranteed immobilizer function and performance:
Minimum Operating Voltage = 6,5V
Nominal Operating Voltage = 13,5V
Maximum Operating Voltage = 17,0V
5
Technical data
Parameter
Symbol
Min
Typ
Max
Unit
Conditions
Supply
Supply Voltage Immobilizer
Module
Module
V
KL30
6,5
13,5
17,0
V
Supply Voltage LRES B2
V
DD
4,5
5,0
5,5
V
Current consumption
INHIBIT OFF
INHIBIT OFF
I
Q
10
A
V
INH
= 0 V;
Full temp. range
Supply current in Sleep
Mode (Quiescent current)
Mode (Quiescent current)
I
DDsleep
40
A
Full temp. range
Supply current excluding
drivers current in Normal
Mode
drivers current in Normal
Mode
I
DDon
5
10
mA
Power on reset level
V
por
1,4
3,6
V
Full temp. range