TLE8262E datasheet(46/93 Pages) INFINEON

46 / 93 page

Data Sheet

Rev. 1.0, 2009-03-31

TLE8262E

LIN Transceiver

Figure 19

Timing during Transition from SBC Sleep to SBC Normal Mode

10.3.1

Transition from SBC Normal to Sleep / Stop Mode

It is recommended to first set the LIN Wake Capable Mode before setting the SBC Sleep or Stop Mode to avoid

missing a wake up event. The reason is identical to the CAN behavior. For additional information, see

Chapter 8.3.1.

Do not change the Transciever setting with the same SPI command that is used to sent the device to Sleep Mode.

10.4

Application Information

10.4.1

Bus Short to GND Feature

The LIN transceiver has a feature implemented to protect the battery from running out of charge in case of a bus

short to GND. When the LIN transceiver is switched to Wake capable or Off, the internal pull-up resistor is switched

off to prevent a large current from flowing to GND. In addition, the transceiver only wakes up on a dominant-to-

recessive edge on the LIN bus, so with the bus shorted to GND the transceiver does not wake up.

10.4.2

Oscillator Tolerance

As required by LIN 2.1, an oscillator clock tolerance < 2% for the protocol handler is possible with LIN transceiver.

10.4.3

LIN Specification

The device fulfills the Physical Layer Specification of LIN 2.1.

The device fulfills the Physical Layer Specification SAE J2602-2.

VBUSX

Vcc1µC

RxD

SBC Normal mode

tWU

BUS

Idle

WAKE

PATTERN

Communication

starts

Reset (RO)

LIN WK from sleep to normal .vsd

SBC Sleep mode

SBC

Restart

mode

tRDx

SPI command

LIN Wake capable

mode

LIN Waked

LIN Normal mode

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