ATA6602 ATMEL Corporation, ATA6602 Datasheet - Page 10

• Manufacturer Part Number: ATA6602
• Description: LIN and Microcontroller System-In-Package: LIN Transceiver, integrated 5V/50 mA voltage regulator, window watchdog and automotive AVR ATmega88 (8 kBytes Flash); green QFN48 package.
• Manufacturer: ATMEL Corporation

3.3.13.3
10
ATA6602/ATA6603
Sleep Mode
Figure 3-4.
The falling edge at EN has to occure not more than t
ing edge at TXD in order to switch the IC into Sleep Mode. The TXD Signal has to stay logic low
during the Mode Select window (see
8).
In Sleep Mode the transmission path is disabled. Supply current from V
I
termination between pin LIN and pin VS is disabled to minimize the power dissipation in case pin
LIN is shorted to GND. Only a weak pull-up current (typically 10 µA) between pin LIN and pin VS
is present.
A falling edge at pin LIN followed by a dominant bus level maintained for a certain time period
(T
Mode. The VDD regulator is activated and the internal LIN slave termination resistor is switched
on. The remote wake-up request is indicated by a low level at pin RXD to interrupt the microcon-
troller (see
With EN high you can switch directly from Silent Mode to Normal Mode. In the application where
the LIN-SBC supplies the microcontroller, wake-up from Sleep Mode is only possible via LIN or
pin WAKE.
VSsleep
bus
Regulator
LIN bus
Voltage
) results in a remote wake-up request. The device switches from Sleep Mode to Pre Normal
NRES
RXD
VCC
= 10 µA. The V
EN
Figure 3-6 on page
If undervoltage, switch to Prenormal Mode
LIN Wake-up Waveform Diagram (from Silent Mode)
Silent Mode 5V/7%/50 mA
Bus wake-up filtering time
DD
regulator is switched off. NRES and RXD are low. The internal slave
High
12).
T
bus
Figure 3-5 on page 11
Regulator Wake-up time
DOMmin
Pre normal Mode 5V/50 mA
Pre Normal Mode
Undervoltage detection active
= 6 ms after or 3.2 µs before the fall-
and section
Low
“Silent Mode” on page
Normal Mode
Bat
4921C–AUTO–01/07
5V/50 mA
Normal Mode
EN High
High
is typically