M68ICS08GR datasheet(232/408 Pages) FREESCALE

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Serial Communications Interface (SCI)

Technical Data

MC68HC908GR8 — Rev 4.0

232

Serial Communications Interface (SCI)

MOTOROLA

18.3 Features

Features of the SCI module include:

•

Full-duplex operation

•

Standard mark/space non-return-to-zero (NRZ) format

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32 programmable baud rates

•

Programmable 8-bit or 9-bit character length

•

Separately enabled transmitter and receiver

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Separate receiver and transmitter CPU interrupt requests

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Programmable transmitter output polarity

•

Two receiver wakeup methods:

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Idle line wakeup

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Address mark wakeup

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Interrupt-driven operation with eight interrupt flags:

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Transmitter empty

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Transmission complete

–

Receiver full

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Idle receiver input

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Receiver overrun

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Noise error

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Framing error

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Parity error

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Receiver framing error detection

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Hardware parity checking

•

1/16 bit-time noise detection

•

Configuration register bit, SCIBDSRC, to allow selection of baud

rate clock source

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