STM8AF52AATAY datasheet(24/114 Pages) STMICROELECTRONICS

24 / 114 page

Product overview

STM8AF52/62xx, STM8AF51/61xx

24/114

DocID14395 Rev 10

5.9.2

Universal asynchronous receiver/transmitter with LIN support

(LINUART)

The devices covered by this datasheet contain one LINUART interface. The interface is

available on all the supported packages. The LINUART is an asynchronous serial

communication interface which supports extensive LIN functions tailored for LIN slave

applications. In LIN mode it is compliant to the LIN standards rev 1.2 to rev 2.2.

Detailed feature list:

LIN mode

Master mode

•

LIN break and delimiter generation

•

LIN break and delimiter detection with separate flag and interrupt source for read back

checking.

Slave mode

•

Autonomous header handling – one single interrupt per valid header

•

Mute mode to filter responses

•

Identifier parity error checking

•

LIN automatic resynchronization, allowing operation with internal RC oscillator (HSI)

clock source

•

Break detection at any time, even during a byte reception

•

Header errors detection:

–

Delimiter too short

–

Synch field error

–

Deviation error (if automatic resynchronization is enabled)

–

Framing error in synch field or identifier field

–

Header time-out

UART mode

•

Full duplex, asynchronous communications - NRZ standard format (mark/space)

•

High-precision baud rate generator

–

A common programmable transmit and receive baud rates up to fMASTER/16

•

Programmable data word length (8 or 9 bits) – 1 or 2 stop bits – parity control

•

Separate enable bits for transmitter and receiver

•

Error detection flags

•

Reduced power consumption mode

•

Multi-processor communication - enter mute mode if address match does not occur

•

Wakeup from mute mode (by idle line detection or address mark detection)

•

Two receiver wakeup modes:

–

Address bit (MSB)

–

Idle line

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