ATA6613-EK Atmel, ATA6613-EK Datasheet - Page 13

• 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

3.3.20.4
9111H–AUTO–01/11
Fail-safe Mode
The VCC regulator is switched off. NRES and RXD are low. The internal slave termination
between the LIN pin and VS pin is disabled, only a weak pull-up current (typically 10µA)
between the LIN pin and the VS pin is present. Sleep Mode can be activated independently
from the current level on the LIN, WAKE, or KL_15 pin.
A voltage less than the LIN Pre_Wake detection VLINL at the LIN pin activates the internal LIN
receiver and switches on the internal slave termination between the LIN pin and the V
A falling edge at the LIN pin followed by a dominant bus level maintained for a certain time
period (t
device switches from Sleep Mode to Fail-safe Mode.
The VCC regulator is activated, and the remote wake-up request is indicated by a low level at
the RXD pin to interrupt the microcontroller (see
EN high can be used to switch directly from Sleep/Silent to Fail-safe Mode. If EN is still high
after VCC ramp up and undervoltage reset time, the IC switches to the Normal Mode.
Figure 3-5.
The device automatically switches to Fail-safe Mode at system power-up and the voltage reg-
ulator is switched on (see
t
stays in this mode until EN is switched to high. The IC then changes to Normal Mode. A power
down of V
at NRES switches into Fail-safe Mode directly. During Fail-safe Mode the TXD pin is an output
and signals the last wake-up source.
res
= 4ms and gives a reset to the microcontroller. LIN communication is switched off. The IC
NRES
bus
VCC
TXD
Batt
LIN
EN
) and a following rising edge at pin LIN results in a remote wake-up request. The
Normal Mode
(V
Switch to Sleep Mode
S
< 4V) during Silent or Sleep Mode switches the IC into Fail-safe Mode. A low
Figure 3-7 on page
LIN switches directly to recessive mode
t
d_sleep
Delay time sleep mode
t
d
= 3.2µs
Mode select window
= maximum 20µs
Atmel ATA6612/ATA6613
Figure 3-6 on page
17). The NRES output switches to low for
Sleep Mode
14).
S
pin.
13