ATA6613-EK Atmel, ATA6613-EK Datasheet - Page 12

• Manufacturer Part Number: ATA6613-EK
• Description: BOARD DEMO LIN-MCM FOR ATA6613
• Manufacturer: Atmel

Specifications of ATA6613-EK

• Main Purpose: Interface, LIN + MCU
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ATA6613
• Primary Attributes: LIN-SBC (System-Basis-Chip) Transceiver, LIN 2.0, Voltage Regulator, Window Watchdog
• Secondary Attributes: 16 kB Flash, 4 Power Modes: Pre-Normal, Normal, Sleep, Silent, 48-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

3.3.2
3.3.3
3.3.4
3.3.5
3.3.6
12
ATA6612/ATA6613
Jumper TRIG
Jumper MODE
Jumper PVCC
Jumper Boost
Jumper EN
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 pin NTRIG from
the LIN SBC. If pin PD3 is used for an alternative functions in the application, the TRIG jumper
can be completely removed giving access to the PD3 pin. In this case, the watchdog has to be
triggered by another I/O-pin from the microcontroller, and the connection to the trigger input
has to be made via an extra 1-wire cable.
By default, this jumper is removed to apply a low-level at the MODE pin of the LIN SBC via the
pull-down resistor R3. In this case, the LIN SBC's watchdog is active and expects trigger
pulses from the microcontroller.
For debugging an application, it is often useful to deactivate the watchdog in order to get no
resets while staying at a break point for example. In this case, the MODE jumper has to be set
which applies a high level at the MODE pin. From now on the watchdog is deactivated. More
information about the Debug Mode can be found in
Debug Mode” on page
By default, this jumper is set to generate a connection between the 5V output voltage of the
LIN SBC and the voltage supply pins of the microcontroller. For example, in order to determine
the overall current consumption of the devices connected to the internal voltage regulator, the
user can remove the jumper PVCC and interpose an ampere meter between the two now sep-
arated pins of the jumper PVCC.
This jumper has also to be removed if it is necessary to have both integrated ICs completely
separate from each other (see also
SBC for Debugging Purposes” on page
By default, this jumper is set so that the internal 5V voltage regulator is active with a current
ability of 50 mA. Most LIN nodes have this current ability or less. For LIN nodes requiring more
current, the current ability can be boosted with the help of a couple of additional external com-
ponents. Refer to
description of how to boost the current ability of the voltage regulator.
By default, this jumper is set to generate a connection between the microcontroller enable out-
put pin 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 enable input has to be controlled either by another I/O-pin from the
microcontroller or it can be set fixed to Vcc. In both cases, the connection to the enable input
has to be made via an extra 1-wire cable.
Section 6. “Boosting Up the Voltage Regulator” on page 18
9.
Section 4.3 “Separating the Microcontroller and the LIN
16).
Section 3.1.9 “MODE Pin (LIN SBC) and
9127A–AUTO–05/08
for a detailed