The 'M LIN' jumper provides the master node pull-up, required if the application running on STK600 is the LIN bus master.
The 3-pin LIN connector must provide V-battery ('BAT') 12V>BAT>5V, and GND. 'BAT' must be supplied from an external source. For further
reference, see the ATA6661 datasheet.
The LIN transceiver is connected to the MCU trough the six-pin 'LIN' header near the switches on STK600. The target MCU will usually implement
the LIN protocol in software trough a USART interface. The 'NSLP' pin must be actively driven high to keep the ATA6661 from sleep mode.
Note: Due to ATA6661 design, it is mandatory to enable the internal pull-up on PD2 (RxLIN) when LIN is used (c.f. AT90CAN128 Datasheet,
section “I/O Ports”).
Miscellaneous
STK600 has two push buttons and three LEDS for special functions and status indication. The following section explains these features. The figure
above shows the placement of these functions.
PROGRAM Push Button
Future versions of AVR Studio may upgrade the master MCU on STK600. AVR Studio will then detect old software versions of STK600 and
update the Flash program memory of the master MCU. To do this the user is required to push the PROGRAM button when powering on STK600.
AVR studio issues instructions on how to perform the upgrade during the upgrade process.
Main Power LED
The red power LED is directly connected to the STK600 main power supply. The power LED is always lit when power is applied to STK600.
Target Power LED
Page 26 of 35
STK600 User Guide
2008-06-20
file://C:\Documents and Settings\PAWEL\Ustawienia lokalne\Temp\~hhE369.htm
