Datasheet

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

Frees

cale Semiconductor,

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

nc...