ATA6622C(2014) 데이터 시트보기 (PDF) - Atmel Corporation

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ATA6622C
(Rev.:2014)

LIN Bus Transceiver with 3.3V (5V) Regulator and Watchdog

Atmel Corporation 

A falling edge at the LIN pin followed by a dominant bus level maintained for a certain time period (> tbus) and the following

rising edge at the LIN pin (see Figure 4-3 on page 9) results in a remote wake-up request. The device switches from Silent

Mode to Fail-safe Mode. 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.

Figure 4-3. LIN Wake Up from Silent Mode

Bus wake-up filtering time

tbus

Fail-safe mode

Normal mode

LIN bus

Node in silent mode

RXD

High

Low

High

TXD

Watchdog

VCC

voltage

regulator

EN

NRES

Watchdog off

Silent mode 3.3V/5V

Start watchdog lead time td

Fail safe mode 3.3V/5V

Normal mode

EN High

Undervoltage detection active

ATA6622C/ATA6624C/ATA6626C [DATASHEET]

9

4986O–AUTO–10/14

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