ATA6664 데이터 시트보기 (PDF) - Atmel Corporation

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ATA6664

LIN Transceiver

Atmel Corporation 

9146D–AUTO–09/10

Atmel ATA6663/ATA6664

Figure 3-3. Floating LIN Bus During Sleep Mode

LIN BUS

VLINL

VBUSdom

LIN Pre-wake

LIN dominant state

IVS

IVSsleep

tmon

IVSfail

IVSsleep

+ ILINwake

IVSsleep

Mode of

operation

Int. Pull-up

Resistor

RLIN

Sleep Mode

Wake-up Detection Phase

off (disabled)

Sleep Mode

If the Atmel® ATA6663/ATA6664 is in sleep mode and the voltage level at the LIN is in domi-

nant state (VLIN < VBUSdom) for a time period exceeding tmon (during a short circuit at LIN, for

example), the IC switches back to sleep mode. The VS current consumption then consists of

IVSsleep plus ILINWAKE. After a positive edge at pin LIN the IC switches directly to fail-safe mode

(see Figure 3-4).

Figure 3-4. Short Circuit to GND on the LIN Bus During Sleep Mode

LIN BUS

VLINL

VBUSdom

IVS

IVSsleep

LIN Pre-wake

LIN dominant state

tmon

tmon

IVSfail

IVSsleep

+ ILINwake

Mode of

operation

Int. Pull-up

Resistor

RLIN

Sleep Mode

Wake-up Detection Phase Sleep Mode

Fail-Safe Mode

off (disabled)

on (enabled)

7

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