ATA6613 データシートの表示（PDF） - Atmel Corporation

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ATA6613

Microcontroller with LIN Transceiver, 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 3-4 on page 12) result 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 3-4 on page 12). EN high can be used to switch directly to Normal Mode.

Figure 3-4.

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

Watchdog off

VCC

voltage

regulator

Silent mode 3.3V/5V/50 mA

EN

Start watchdog lead time td

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

EN High

NRES

Undervoltage detection active

3.3.20.3

Sleep Mode

A falling edge at EN when TXD is low switches the IC into Sleep Mode. The TXD Signal has to

be logic low during the Mode Select window (Figure 3-5 on page 13). In order to avoid any influ-

ence to the LIN-pin during switching into sleep mode it is possible to switch the EN up to 3.2 µs

earlier to LOW than the TXD. Therefore, the best and easiest way are two falling edges at TXD

and EN at the same time.The transmission path is disabled in Sleep Mode. The supply current

IVSsleep from VBatt is typically 10 µA.

12 ATA6612/ATA6613

9111G–AUTO–05/10

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