Huf INTTAGE BMW Car Door Handle User Manual
- June 6, 2024
- Huf
Table of Contents
Huf Group
Operational Description and User Manual
Model: INT TAGE NFC
PCBA1 G26
General product overview
Function CA:
There are two different capacitive sensors. The first sensor is used for
unlock function. This sensor can distinguish an approach and a touch in SW,
but there is only a LIN or UART signalization for unlocking touch. The second
sensor is used for lock function and is designed as a touch sensor. An SW
differentiation between lock approach and lock touch is also possible, but
just like the unlock sensor there is only a LIN or UART signalization for the
locked touch.
Keyless access is enabled by activating the sensors on the door handle in
combination with the door handle-ECU, whereby the vehicle can be unlocked or
locked.
Function NFC:
To enable communication with an NFC device, the door handle electronics CA +
NFC has a highly integrated transceiver IC for contactless communication at
13,56MHz for automotive applications. This reader has a gateway function, the
possibility to buffer required data and various diagnostic information can be
provided as well.
The data is transferred to the NFC device according to ISO/IEC 14443-A and the
data transmission to the vehicle is realized via the LIN-Bus interface. ECP is
implemented to communicate with Apple NFC devices.
In LPCD mode the door handle electronics checks the magnetic field for
amplitude or phase change. This LPCD polling takes place in adjustable
interval lengths.
Environmental conditions
– Operating temperature range:
– Storage temperature range:
– Repainting temperature:
– Room temperature:
– Air humidity:
– Test temperature for EOL-Test:| -40 to +85°C
40 to +105°C
110°C for 1h, 130°C for 0,25h
+23°C ± 5°C
25% to 90%
Room temperature
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General manufacturing instructions
- At the beginning of the production process, the serial number is marked on the PCB.
- An unacceptable deflection of the board while placing components must be avoided.
- PCB separation is a particularly critical process. Torsional stress during separation and impact stress during punching shall be avoided.
- The method for paneling must ensure that no components be damaged. Evidence of the equipment manufacturer is necessary.
- The soldering process should be reflow soldering and selective wave soldering.
- Active cooling of the board after soldering is not permitted.
- The component’s specifications concerning the temperature gradients must adhere.
- A reworking of an SMD component with a soldering iron is prohibited.
Assembly concept of electronics INT TAGE NFC
NFC antenna
Connector definitions
Connector BMW G26, INT TAGE NFC
Only the BMW G26/ G42 CA + NFC TAGE have the following connector pins (TAGE side):
- Pin 1 = clamp 30 (+Ubat)
- Pin 2 = clamp 31 (GND)
- Pin 3 = LIN
- Pin 4 = UART
The following picture shows the wire harness which will be plugged in the bracket and which will be used as an adapter cable between the vehicle wire harness and door handle electronic.
Due to pin rotation in male connector, there is the following pin assignment (vehicle side):
– Pin 1 (yellow)
– Pin 2 (white)
– Pin 3 (brown)
– Pin 4 (red)| = UART
= LIN
= clamp 31 (GND)
= clamp 30 (+Ubat)
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Connector BMW G26/ G42/ U06/ U11 CA and U06/ U11 CA + NFC
Electrical Characteristics
Block diagram – BMW G26 CA + NFC, UART and LIN (SP2018), 4pol.
Operating voltages
– Operating voltage range:
– LIN operating voltage range:
– Test voltage for EOL:| +Ubat = 9V to 16V DC
+Ubat = 8V to 18V DC
+Ubat = 12V ± 2% DC
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Current consumption
– Series parts current consumption:
o Quiescent current:| Iquies ≤ 400µA for 4 TAGE per vehicle
Iquies ≤ 200µA for 2 TAGE per vehicle
CA = 65µA
CA + NFC = 150µA
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o Active current:| Iactive ≤ 250mA
CA <10mA
CA + NFC < 120mA
The final values have to be defined with series parts by Huf-HQ.
Timing conditions
– Polling rate:
o CA
o CA + NFC
– Polling rate:| 20ms
20ms (Kapa), 100ms (NFC)
40µs
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– Clock rate microcontroller:
o Kapaburst (333kHz/ 400kHz)
o A/D conversion + data handling| 4MHz
32MHz
– Baudrate:
o UART
o LIN| 4800Bit/s up to 38400Bit/s
9600Bit/s up to 38400Bit/s
Regulatory Information
FEDERAL COMMUNICATIONS COMMISSION INTERFERENCE STATEMENT
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/ TV technician for help.
CAUTION:
Any changes or modifications not expressly approved by the grantee of this
device could void the user’s authority to operate the equipment
Canada, Innovation, Science and Economic Development Canada (ISED)
Notices
This device contains license-exempt transmitter(s)/receiver(s) that comply
with Innovation, Science and Economic Development Canada’s license-exempt
RSS(s). Operation is subject to the following two conditions:
- This device may not cause interference.
- This device must accept any interference, including interference that may cause undesired operation of the device.