Rainbow-electronics ATA6630 Instrukcja Użytkownika Pobierz pdf (Strona 10)

9117C–AUTO–10/09

ATA6628/ATA6630 [Preliminary]

A falling edge at the LIN pin followed by a dominant bus level maintained for a certain time

period (t

bus

) and the following rising edge at the LIN pin (see Figure 4-3 on page 10) result in a

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 10). EN high can be

used to switch directly to Normal Mode.

Figure 4-3. LIN Wake-up from Silent Mode

Watchdog off Start watchdog lead time t

Watchdog

Undervoltage detection active

Silent mode 3.3V/5V/50 mA Fail safe mode 3.3V/5V/50 mA

Normal mode

Low

Fail-safe mode Normal mode

EN High

Node in silent mode

HighHigh

NRES

VCC

voltage

regulator

RXD

LIN bus

Bus wake-up filtering time

bus

TXD

Don't care

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Rainbow-electronics ATA6630 Instrukcja Użytkownika Strona 10