ST72361J4-AUTO View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

ST72361J4-AUTO

8-bit MCU for automotive with Flash or ROM, 10-bit ADC, 5 timers, SPI, LINSCI™

STMicroelectronics 

ST72361xx-Auto

Figure 131. Header reception event sequence

Important notes

LIN Synch LIN Synch Identifier

Break

Field

Field

THEADER

ID field STOP bit

Critical

Window

Active mode is set

(RWU is cleared)

RDRF flag is set

Figure 132. LINSCI interrupt routine

@interrupt void LINSCI_IT ( void ) /* LINSCI interrupt routine */

{

/* clear flags */

SCISR_buffer = SCISR;

SCIDR_buffer = SCIDR;

if ( SCISR_buffer & LHE )/* header error ? */

{

if (!LHLR)/* header time-out? */

{

if ( !(SCICR2 & RWU) )/* active mode ? */

{

_asm("sim");/* disable interrupts */

SCISR;

SCIDR;/* Clear RDRF flag */

SCICR2 |= RWU;/* set mute mode */

SCISR;

SCIDR;/* Clear RDRF flag */

SCICR2 |= RWU;/* set mute mode */

_asm("rim");/* enable interrupts */

}

}

}

}

Example using Cosmic compiler syntax

23.2

23.2.1

Flash/FastROM devices only

LINSCI wrong break duration

SCI mode

A single break character is sent by setting and resetting the SBK bit in the SCICR2 register.

In some cases, the break character may have a longer duration than expected:

● 20 bits instead of 10 bits if M = 0

● 22 bits instead of 11 bits if M = 1

In the same way, as long as the SBK bit is set, break characters are sent to the TDO pin.

This may lead to generate one break more than expected.

Doc ID 12468 Rev 3

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