參數(shù)資料
型號: MC68HC705C9A
廠商: Motorola, Inc.
英文描述: Microcontrollers
中文描述: 微控制器
文件頁數(shù): 86/160頁
文件大?。?/td> 2076K
代理商: MC68HC705C9A
Serial Communications Interface (SCI)
Advance Information
MC68HC705C9A — Rev. 4.0
86
Serial Communications Interface (SCI)
For More Information On This Product,
Go to: www.freescale.com
MOTOROLA
9.2 Introduction
This section describes the on-chip asynchronous serial communications
interface (SCI). The SCI allows full-duplex, asynchronous, RS232 or
RS422 serial communication between the MCU and remote devices,
including other MCUs. The transmitter and receiver of the SCI operate
independently, although they use the same baud rate generator.
9.3 Features
Features of the SCI include:
Standard mark/space non-return-to-zero format
Full-duplex operation
32 programmable baud rates
Programmable 8-bit or 9-bit character length
Separately enabled transmitter and receiver
Two receiver wakeup methods:
Idle line wakeup
Address mark wakeup
Interrupt-driven operation capability with five interrupt flags:
Transmitter data register empty
Transmission complete
Transmission data register full
Receiver overrun
Idle receiver input
Receiver framing error detection
1/16 bit-time noise detection
F
Freescale Semiconductor, Inc.
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