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

•

32 programmable baud rates

•

Programmable 8-bit or 9-bit character length

•

Separately enabled transmitter and receiver

•

Separate receiver and transmitter CPU interrupt requests

•

Programmable transmitter output polarity

•

Two receiver wakeup methods:

–

Idle line wakeup

–

Address mark wakeup

•

Interrupt-driven operation with eight interrupt flags:

–

Transmitter empty

–

Transmission complete

–

Receiver full

–

Idle receiver input

–

Receiver overrun

–

Noise error

–

Framing error

–

Parity error

•

Receiver framing error detection

•

Hardware parity checking

•

1/16 bit-time noise detection

•

Configuration register bit, SCIBDSRC, to allow selection of baud

rate clock source

Freescale Semiconductor, Inc.

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