MC68HC08AS32A Datasheet, PDF (171/296 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Data Sheet — MC68HC08AS32A
Section 13. Serial Communications Interface (SCI)
13.1 Introduction
This section describes the serial communications interface module (SCI,
Version D), which allows high-speed asynchronous communications with
peripheral devices and other MCUs.
13.2 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
MC68HC08AS32A — Rev. 1
MOTOROLA
Serial Communications Interface (SCI)
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Data Sheet
171