AN1278 datasheet(43/44 Pages) STMICROELECTRONICS

Part #	AN1278

Description	Many mechanical components in the automotive sector have been replaced

PDF	44 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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LIN (LOCAL INTERCONNECT NETWORK) SOLUTIONS

As a result the application software should not delay the occurrence of the SCI reception no-

tification interrupt so much that an overrun condition occurs. Specifically: The end the LIN in-

terrupt should end before the stop bit of the next byte.

Figure 25. Reception Interrupt Handling

4.4.3.2 Transmission

In transmission delays coming from the application cannot disturb the proper working of the

software. This will delay the transmission and the issue is more a timeout issue on the current

transmitted frame: If the interrupt time is very long the transmitted frame may exceed the max-

imum allowed frame time. The SCI interrupt in transmission occurs also at the stop bit. If the

occurrence of the interrupt is delayed by the application the interbyte time will increase.

5 SUMMARY OF CHANGES

Revision

Main changes

Date

1.0

First version

August 2001

1.1

Remove section “HOW TO GET THE LIN SOFTWARE?”

April 2002

1 byte

SCI reception

interrupt request

application task

interrupt served

AN1278 Datasheet(PDF) 43 Page - STMicroelectronics