ATA6602-PLQW ATMEL [ATMEL Corporation], ATA6602-PLQW Datasheet - Page 11

• Manufacturer Part Number: ATA6602-PLQW
• Description: Microcontroller with LIN Transceiver, 5V Regulator and Watchdog
• Manufacturer: ATMEL [ATMEL Corporation]

3.3.13.4
3.3.13.5
3.3.13.6
4921C–AUTO–01/07
Pre Normal Mode
Unpowered Mode
Debug Mode
Figure 3-5.
At system power-up the device automatically switches to Pre Normal Mode. The voltage regula-
tor is switched on V
to low for t
off and the watchdog is active. The LIN-SBC stays in this mode until EN is switched to high.
If V
Pre Normal Mode.
If you connect battery voltage to the application circuit, the voltage at the VS pin increases due
to the block capacitor (see
voltage threshold V
V
and the load.
The NRES is low for the reset time delay t
The watchdog is switched off with pin MODE high (5V) and in normal operation if it is tied to
GND.
DD
Battery
output voltage reaches its nominal value after t
NRES
(V
VCC
TXD
res
LIN
S
EN
< 4V) is powered down during Silent Mode or Sleep Mode, the IC powers up into
= 10 ms and sends a reset to the microcontroller. LIN communication is switched
Switch to Sleep Mode
DD
S_th
= 5V ±2%/50 mA (see
, the IC mode changes from Unpowered Mode to Pre Normal Mode. The
Figure 3-7 on page
T
LIN switches directly to recessive mode
d
Delay time Sleep Mode
_sleep = maximum 15 µs
T
d
= 3.2 µs
Mode Select window
reset
Figure 3-7 on page
. During this time, no mode change is possible.
14). When V
VDD
. This time depends on the V
S
ATA6602/ATA6603
becomes higher than the V
14). The NRES output switches
Sleep Mode
DD
capacitor
S
under-
11