ATA6617-EK Atmel, ATA6617-EK Datasheet - Page 5

• Manufacturer Part Number: ATA6617-EK
• Description: BOARD DEV LIN-MCM ATA6617
• Manufacturer: Atmel

Specifications of ATA6617-EK

• Main Purpose: Interface, LIN + MCU
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ATA6617
• Primary Attributes: LIN SiP (System-in-Package) with LIN Transceiver, AVR ATtiny167 with 16K Memory
• Secondary Attributes: Part also has 5V/50 mA Regulator, Window Watchdog all in a QFN38 Package
• Maximum Frequency: 8 MHz
• Supply Voltage (max): 27 V
• Supply Voltage (min): 5 V
• Supply Current: 10 uA
• Minimum Frequency: 1 MHz
• Product: RF Development Tools
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9149A–AUTO–03/09
Figure 2-1.
The board’s pre-programmed firmware provides the window watchdog with a valid trigger signal
so that the NRES pin is not forced to ground and the microcontroller does not receive any
resets.
For testing purposes and to understanding the system, it can be helpful to see 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 NTRIG jumper
• Re-program the fuse bit
No trigger signal reaches the watchdog and the watchdog generates a reset.
Changing the fuse bit CKDIV8 to un-programmed, changes the microcontroller’s internal
clock from 1 MHz to 8 MHz. Because of this, the trigger signal generated from the
microcontroller does not meet the open window from the window watchdog and a reset is
generated.
ATA6617 Development Board with Reference Point
ATA6617 - EK
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