ATAB-LFMB-78 Atmel, ATAB-LFMB-78 Datasheet
ATAB-LFMB-78
Specifications of ATAB-LFMB-78
Related parts for ATAB-LFMB-78
ATAB-LFMB-78 Summary of contents
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LF Wake-up Demonstrator ATAK5278-82 1. General Description The LF wake-up demonstrator is provided to demonstrate the performance wake-up channel, mainly needed for battery-driven systems. Typical wake-up applica- tions can be found in vehicles for passive entry (PE) ...
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... Host PC running Windows • Power supply 8V to 15V Hardware Components The ATAB5278 transmitter interface is patched onto a microcontroller baseboard. The ATmega8515 microcontroller is programmed control the interface and to maintain com- munication with the host. Therefore, operation software has to be installed on the host via the enclosed CD-ROM ...
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... Transmitter Board ATAB5278 The transmitter board is plugged into the baseboard via header pin connectors controlled by the ® AVR microcontroller on the baseboard through the SPI interface. In accordance with the features provided by the IC, the board is equipped with a choke for the boost converter needed to achieve a wide range of antenna current regulation independent of battery voltage and antenna impedance ...
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... Figure 3-2. Transmitter Board ATAB5278 ATAK5278-82 LF Wake-up Demonstrator 4 4894B–AUTO–06/06 ...
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Antenna Module The antenna module is matched by capacitor CANT (C1) to resonant frequency f = 125 kHz ±3 kHz. res Whereas the total antenna quality factor is adjusted by RANT (R1) to typical Q = 25. 3.2.1 Typical ...
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... Figure 3-4. Schematic of the Transmitter Board ATAB5278 X4_1 D1 VBATT 8V to 16V GND X4_2 C2 TP5 CANT Ext. Antenna Module X3_1 J2 TP1 CANT (C1) RANT (R1) J1 LANT X3_2 RANT T1 TP2 RSH ATAK5278-82 LF Wake-up Demonstrator VL1 VL3 OSCi OSCO VL2 4 VDS CBOOT ATA5278 6 CBOOST TP4 ...
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... Table 3-1. Parts List of ATA5278 Antenna Interface, ATAB5278 Part No. Designation U1 Transmitter IC T1 MOS transistor D1 Diode D2 Diode D3 Suppressor diode LD1 LED R1 Resistor R2 Resistor RSH Resistor RINT Resistor RANT Resistor C1 Capacitor C2 Capacitor C3 Capacitor C4/1 Capacitor C4/2 Capacitor C5 Capacitor C6 Capacitor CINT Capacitor CBOOTNT Capacitor ...
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... Test points and a pin socket allow the measurement of the relevant sig- nals lithium battery is used, supplying the receiver with LED indication. Figure 3-5. Figure 3-6. ATAK5278-82 LF Wake-up Demonstrator 8 Receiver Board ATAB5282 V.4 Schematic of Receiver Board ATAB5282 V.4 R1 C1a C1b COIL1 L1 1 ...
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... Table 3-2. Parts List of the Receiver Board ATAB5282 V.4 Part No. Designation U1 Wake- Transistor LD1 LED L1-(L3) 3D antenna coil C1 Capacitor C2 Capacitor C3 Capacitor C4 Capacitor C6 Capacitor R1 Resistor R2 Resistor R3 Resistor R4/1 Resistor R4/2 Resistor R5 Resistor R6 Resistor R7 Resistor R8 Resistor R9 Bridge Vbatt1 Battery holder Li-Cell 7 pcs Test pins ...
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... Reset is executed to re-initialize standby mode. Test pins allow the measurement of all relevant signals lithium battery is used supplying the receiver with LED indication. Figure 3-7. Figure 3-8. ATAK5278-82 LF Wake-up Demonstrator 10 Receiver Board ATAB5283V3 Schematic of the Receiver Board ATAB5283 V Receiver VDD 8 ...
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... Table 3-3. Parts List of the Receiver Board ATAB5283 V.3 Part No. Designation U1 Wake- Transistor T2 Transistor D1 LED L1 Antenna coil C1 Capacitor C1b Capacitor C14 Capacitor C15 Capacitor R1 Resistor R2 Resistor R3 Resistor R4 Resistor R5 Resistor R6 Resistor R7 Resistor R8 Resistor Vbatt1 Battery holder Li-Cell S1 Shift switch 6 pcs Test pins ...
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... When executing the program file ATA5278.exe, the setup menu as seen in The menu enables setting and checking of configuration states as well creating, saving and reloading the data protocol to be sent. An appropriate protocol data file for the ATAB5282 receiver board is loaded by default. The command set and status information displayed by menu based on the SPI command structure described in the data sheet for ATA5278 ...
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Configuration Register 1 Enables to set and to check the configuration of the transmitter with regard to the matter of mod- ulation (ASK or PSK) and antenna current level. By pull down menu the antenna current is selectable from ...
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... After the demonstrator has been started as described in ried out. 6.1 Protocol Sent Indicated by LED on Receiver Board • Insert the battery into the slot of the ATAB5282 (ATAB5283) receiver board, and place the board within a distance of approximately 50 cm along the transmitter antenna axis. Figure 6-1. ATAK5278-82 LF Wake-up Demonstrator 14 Write permission is required to install the software to the host system ...
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... Load Protocol .dat File • When the Single button is clicked, the loaded protocol data is sent once by the transmitter. Each protocol cycle received is indicated by LED on the receiver board ATAB5282. Using the default ATAB5278 transmitter antenna current value (Iant = 1A receiver should be able to detect the protocol at a distance of at least 2 meters along the antenna axis • ...
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... Signal Transmission Tx-Rx Measurements Figure 6-3. Signal Transmission ATAB5278 Transmitter to ATA5282 Receiver Figure 6-4. Signal Transmission ATAB5278 Transmitter to ATA5283 Receiver ATAK5278-82 LF Wake-up Demonstrator 16 4894B–AUTO–06/06 ...
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... QSC Feature Measurement at ATAB5278 Board Data transmission without QSC function can be performed by shorting QSC transistor T1 (con- nect TP2 with x3_2). Due to the antenna’s Q factor, the current and voltage signals do not reach final pulse level of protocol data nal slope and the smaller the reachable signal data rate. ...
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Figure 6-6. Sent Data With QSC 6.4 Current Setting The antenna current setting can be selected from 16 levels via drop-down menu In default mode the maximum current is set to typically 1000 mA. Related antenna current mea- surements with ...
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PSK Modulation Special applications may need to transmit data by PSK modulation of the 125 kHz carrier fre- quency. Even though an appropriate receiver is not available, the modulation can be done by the ATA5278, as shown in Figure ...
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Diagnosis Functions The IC protects itself from destruction if a fault occurs. For demonstration, the antenna diagnosis information can be checked and readout using the Status Register menu. 6.6.1 Antenna Short Circuit During Protocol Sent • Short TP5 to ...
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... Disclaimer: The information in this document is provided in connection with Atmel products. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products. EXCEPT AS SET FORTH IN ATMEL’S TERMS AND CONDI- TIONS OF SALE LOCATED ON ATMEL’S WEB SITE, ATMEL ASSUMES NO LIABILITY WHATSOEVER AND DISCLAIMS ANY EXPRESS, IMPLIED OR STATUTORY WARRANTY RELATING TO ITS PRODUCTS INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT ...