MC68HC908AZ60 Datasheet, PDF (202/480 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Serial Communications Interface Module (SCI)
SCI Status Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
SCI Status Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 232
SCI Data Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
SCI Baud Rate Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 234
Introduction
The SCI allows asynchronous communications with peripheral devices
and other MCUs.
Features
The SCI module’s features 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
MC68HC908AZ60 — Rev 2.0
200
Serial Communications Interface Module (SCI)
2-sci
MOTOROLA