ATA6603-EK Atmel, ATA6603-EK Datasheet - Page 13

• Manufacturer Part Number: ATA6603-EK
• Description: MCU, MPU & DSP Development Tools Demoboard LIN-MCM
• Manufacturer: Atmel

Specifications of ATA6603-EK

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.3.15
3.3.15.1
3.3.15.2
3.3.15.3
4921E–AUTO–09/09
Wake-up Scenarios from Silent to Sleep Mode
Remote Wake-up via Dominant Bus State
Local Wake-up via Pin Wake
Wake-up Source Recognition
Table 3-1.
A falling edge at pin LIN followed by a dominant bus level maintained for a certain time period
(t
voltage regulator is activated, and the internal slave termination resistor is switched on. The
remote wake-up request is indicated by a low level at pin RXD to generate an interrupt in the
microcontroller and a high level at pin TXD. The watchdog needs a trigger signal from PTRIG or
NTRIG within the lead time t
A falling edge at pin WAKE followed by a low level maintained for a certain time period (t
results in a local wake-up request. The extra long wake-up time (t
sients as defined in ISO7637 create a wake-up. The device switches to Pre-normal mode. The
internal slave termination resistor is switched on. The local wake-up request is indicated by a low
level at pin RXD to generate an interrupt in the microcontroller and a low level at pin TXD. The
watchdog needs a trigger signal from PTRIG or NTRIG within the lead time t
NRES.
The device can distinguish between a local wake-up request (pin WAKE) and a remote wake-up
request (dominant LIN bus state). The wake-up source can be read on pin TXD in Pre-normal
mode. A high level indicates a remote wake-up request and a low level indicates a local wake-up
request. The wake-up request flag (signalled on pin RXD) as well as the wake-up source flag
(signalled on pin TXD) are reset immediately, if the microcontroller sets pin EN to high (see
ure 3-3 on page 9
If the LIN-SBC is in Sleep mode or Silent mode and the voltage at the LIN Bus falls to a value
lower than VLINL < VS – 3.3V (see “Electrical Characteristics” on page 22, numbers 9.5 and
9.6) but remains higher than 0.6
level at the pins RXD and TXD (see
BUS
Pre-normal
Operation
Mode of
) results in a remote wake-up request. The device switches to Pre-normal mode. The V
Normal
Sleep
Silent
Table of Modes
Transceiver
and
Off
On
Off
Off
Figure 3-4 on page
D
to avoid resets at NRES (see
VDD
5V
5V
5V
0V
VS, a local wake-up is indicated after the time t
Figure 3-7 on page
10).
WD_OSC
2.5V
2.5V
0V
0V
14).
Figure 3-4 on page
ATA6602/ATA6603
TEMP
2V
2V
0V
0V
WAKE
) ensures that no tran-
RXD
5V
5V
5V
0V
D
to avoid resets at
10).
WAKE
RECESSIVE
RECESSIVE
RECESSIVE
RECESSIVE
LIN
by a low
WAKE
Fig-
13
DD
)