Atmel ATA6612-EK Скачать руководство пользователя страница 1

9127E-AUTO-03/15

Features

All necessary components to put the Atmel

®

 ATA6612/ATA6613/ATA6614 in 

operation are included

Placeholders for some optional components for extended functions included

All pins easily accessible

Easily adaptable watchdog times by replacing a single resistor

Possibility to activate an external NPN-transistor for boosting up the output current 
of the voltage regulator (jumper JP3)

Possibility of selecting between master or slave operation (mounting D2 and R1)

Possibility to mount an external quartz to handle time-critical applications (not 
necessary for LIN communication)

Push button included for creating a local wake-up after having entered the sleep or 
silent mode

Ground coulter clip for connecting probes easily when measuring with the 
oscilloscope

Figure 1.

Atmel ATA6612/ATA6613/ATA6614 Development Board 

APPLICATION NOTE

Atmel ATA6612/ATA6613/ATA6614-EK Development

Board V1.2

ATA6612/ATA6613/ATA6614

Содержание ATA6612-EK

Страница 1: ...nt of the voltage regulator jumper JP3 Possibility of selecting between master or slave operation mounting D2 and R1 Possibility to mount an external quartz to handle time critical applications not ne...

Страница 2: ...tops the CPU while allowing the SRAM timer counters USART 2 wire serial interface SPI port and interrupt system to continue functioning Power down mode saves the register contents but freezes the osci...

Страница 3: ...on note AVR095 Migrating between ATmega48 ATmega88 and ATmega168 available at http www atmel com dyn products app_notes asp family_id 607 The Atmel ATA6630 has features which exceed the features of th...

Страница 4: ...by setting the EN pin to high ENABLE jumper and starts to trigger the integrated window watchdog The system is now ready for data transmission via the LIN bus Signals fed in at the TXD pin are visible...

Страница 5: ...ee the behavior when the watchdog is not triggered correctly This can be achieved in two different ways without changing the firmware of the IC Remove TRIG jumper No trigger signal reaches the watchdo...

Страница 6: ...ation and overtemperature shutdown To boost the maximum load current an external NPN transistor may be used Its base is connected to the VCC pin and its emitter is connected to PVCC To enable this fea...

Страница 7: ...n the microcontroller via a zero ohm resistor For monitoring the signals at these pins test points are provided on the development board 3 1 4 1 LIN Pin A low side driver with internal current limitat...

Страница 8: ...ated on a low to high transition It can be connected to the ignition of the car in order to generate a local wake up in the application when the ignition is switched on If this wake up option is not u...

Страница 9: ...ng pins not described in this section do not have any special external circuitry and or they are used as described in details in the datasheet 3 1 13 Summary of the Hard wired Pins on the Atmel ATA661...

Страница 10: ...hould be set 3 3 2 Jumper TRIG By default this jumper is set to generate a connection between the watchdog trigger signal output pin PD3 from the microcontroller and the watchdog trigger signal input...

Страница 11: ...n PD4 and the enable input pin EN from the LIN SBC If pin PD4 is used for alternative functions in the application the EN jumper can be completely removed giving access to the PD4 pin In this case the...

Страница 12: ...s in which the accuracy of the internal RC oscillator is not sufficient to meet the application specific requirements an external crystal oscillator plus the two capacitors can be mounted on the Atmel...

Страница 13: ...a 51k resistor R8 connected between pin WD_OSC and Ground In order to change these timings the resistor R8 has to be replaced Its location is shown in Figure 3 6 Figure 3 6 Location of Resistor R8 A d...

Страница 14: ...able on the web 4 2 Debugging the Atmel ATA6612 ATA6613 ATA6614 Combined with Atmel Studio the JTAGICE MkII can perform on chip debugging on all AVR 8 bit RISC microcontrollers with JTAG Interface or...

Страница 15: ...is available at http www warwickcontrol com For more information about the certified LIN stacks please contact the third party suppliers directly 6 Boosting Up the Voltage Regulator For some applicati...

Страница 16: ...1 DC Socket XV1 LL4148 GND2 GND1 D1 X5 S1 R9 C2 1 1 2 1 1 2 2 2 F VS VDD PD3 PD4 PB0 PD7 PD6 PD5 PB4 PB3 PB2 PB1 AVDD ADC6 GND4 AREF ADC7 PC0 PC1 PC2 PC3 PVCC PC6 NRES PD2 PD1_TXD PD0_RXD ADC7 PB5 ARE...

Страница 17: ...ATA6613 ATA6614 APPLICATION NOTE 9127E AUTO 03 15 Figure 7 2 Atmel ATA6612 ATA6613 ATA6614 Board Component Placement Top Side Top View Figure 7 3 Atmel ATA6612 ATA6613 ATA6614 Development Board Top Si...

Страница 18: ...http www atmel com Images Atmel 4986 LIN Networking ATA6622 ATA6624 ATA6626_Datasheet pdf 3 Atmel ATmega48 88 168 Automotive http www atmel com Images doc7530 pdf 4 Atmel ATmega88 Automotive 150 C Spe...

Страница 19: ...ments doc2554 pdf This application note describes issues to be aware of when migrating between the ATmega48 ATmega88 and ATmega168 microcontrollers 3 AVR308 Software LIN Slave http www atmel com dyn r...

Страница 20: ...MENT EVEN IF ATMEL HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES Atmel makes no representations or warranties with respect to the accuracy or completeness of the contents of this document and re...

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