ATA6622 ATMEL Corporation, ATA6622 Datasheet - Page 8

• Manufacturer Part Number: ATA6622
• Description: LIN Bus Transceiver with 3.3V (5V) Regulator and Watchdog
• Manufacturer: ATMEL Corporation

DRAFT
A voltage less than the LIN Pre_Wake detection VLINL at the LIN pin activates the internal LIN
receiver.
Figure 4-2.
Switch to Silent Mode
Normal Mode
Silent Mode
EN
Mode select window
TXD
t
= 3.2 µs
d
NRES
VCC
Delay time silent mode
t
_sleep = maximum 20 µs
d
LIN
LIN switches directly to recessive mode
A falling edge at the LIN pin followed by a dominant bus level maintained for a certain time
period (t
) and the following rising edge at the LIN pin (see
Figure 4-3 on page
9) result in a
bus
remote wake-up request. The device switches from Silent Mode to Fail-safe Mode. The internal
LIN slave termination resistor is switched on. The remote wake-up request is indicated by a low
level at the RXD pin to interrupt the microcontroller (see
Figure 4-3 on page
9). EN high can be
used to switch directly to Normal Mode.
ATA6622/ATA6624/ATA6626 [Preliminary]
8
4986B–AUTO–07/07