MC68HC08AZ32A Datasheet, PDF (188/456 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
Serial Communications Interface (SCI)
15.9 I/O Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
15.9.1 SCI Control Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
15.9.2 SCI Control Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 212
15.9.3 SCI Control Register 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
15.9.4 SCI Status Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 217
15.9.5 SCI Status Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221
15.9.6 SCI Data Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 222
15.9.7 SCI Baud Rate Register . . . . . . . . . . . . . . . . . . . . . . . . . . 223
15.2 Introduction
The SCI allows asynchronous communications with peripheral devices
and other MCUs.
15.3 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
Technical Data
188
MC68HC08AZ32A — Rev 1.0
Serial Communications Interface (SCI)
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