ATA6622-EK Atmel, ATA6622-EK Datasheet - Page 9

• Manufacturer Part Number: ATA6622-EK
• Description: BOARD DEMO LIN SBC FOR ATA6622
• Manufacturer: Atmel

Specifications of ATA6622-EK

• Main Purpose: Interface, LIN
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: ATA6622
• Primary Attributes: LIN-SBC (System-Basis-Chip) Transceiver, LIN 2.0, Voltage Regulator, Window Watchdog
• Secondary Attributes: 4 Power Modes: Pre-Normal, Normal, Sleep, Silent, 20-QFN
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

4.3
4986J–AUTO–03/11
Sleep Mode
A falling edge at the LIN pin followed by a dominant bus level maintained for a certain time
period (> t
a remote wake-up request. The device switches from Silent Mode to Fail-safe Mode. The
remote wake-up request is indicated by a low level at the RXD pin to interrupt the microcon-
troller (see
Figure 4-3.
A falling edge at EN when TXD is low switches the IC into Sleep Mode. The TXD Signal has to
be logic low during the Mode Select window
influence to the LIN-pin during switching into sleep mode it is possible to switch the EN up to
3.2 µs earlier to LOW than the TXD. Therefore, the best and easiest way are two falling edges
at TXD and EN at the same time.The transmission path is disabled in Sleep Mode. The supply
current I
Watchdog
regulator
voltage
LIN bus
VCC
NRES
TXD
RXD
EN
VSsleep
bus
Figure 4-3 on page
Node in silent mode
) and the following rising edge at the LIN pin (see
LIN Wake Up from Silent Mode
from V
Bus wake-up filtering time
Silent mode 3.3V/5V
Batt
Watchdog off
is typically 10 µA.
t
High
bus
Atmel ATA6622/ATA6624/ATA6626
9). EN high can be used to switch directly to Normal Mode.
Undervoltage detection active
(Figure 4-4 on page
Start watchdog lead time t
Fail safe mode 3.3V/5V
Fail-safe mode
Low
Figure 4-3 on page
10). In order to avoid any
d
Normal mode
EN High
Normal mode
9) results in
High
9