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參數(shù)資料
| 型號： | ST72331 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 8-Bit MCU with 8 to 16K ROM/OTP/EPROM, 256 EEPROM, 384 to 512 Bytes RAM, ADC, WDG, SCI, SPI and 2 Timers(8位微控制器(8M)) |
| 中文描述： | 8位微控制器與8至16K的光碟/雙層/存儲器，256的EEPROM，384字節(jié)RAM為512，藝發(fā)局，水分散粒劑，脊髓損傷，SPI和2計時器（8位微控制器（8米）） |
| 文件頁數(shù)： | 52/98頁 |
| 文件大?。?/td> | 1123K |
| 代理商： | ST72331 |
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52/98
ST72331
4.5 SERIAL COMMUNICATIONS INTERFACE (SCI)
4.5.1 Introduction
The Serial Communications Interface (SCI) offers
a flexible means of full-duplex data exchange with
external equipment requiring an industry standard
NRZ asynchronous serial data format. The SCI of-
fers a very wide range of baud rates using two
baud rate generator systems.
4.5.2 Main Features
I
Full duplex, asynchronous communications
I
NRZ standard format (Mark/Space)
I
Dual baud rate generator systems
I
Independently programmable transmit and
receive baud rates up to 250K baud.
I
Programmable data word length (8 or 9 bits)
I
Receive buffer full, Transmit buffer empty and
End of Transmission flags
I
Two receiver wake-up modes:
– Address bit (MSB)
– Idle line
I
Muting function for multiprocessor configurations
I
Separate enable bits for Transmitter and
Receiver
I
Three error detection flags:
– Overrun error
– Noise error
– Frame error
I
Five interrupt sources with flags:
– Transmit data register empty
– Transmission complete
– Receive data register full
– Idle line received
– Overrun error detected
4.5.3 General Description
The interface is externally connected to another
device by two pins (see Figure 2.):
– TDO: Transmit Data Output. When the transmit-
ter is disabled, the output pin returns to its I/O
port configuration. When the transmitter is ena-
bled and nothing is to be transmitted, the TDO
pin is at high level.
– RDI: Receive Data Input is the serial data input.
Oversampling techniques are used for data re-
covery by discriminating between valid incoming
data and noise.
Through this pins, serial data is transmitted and re-
ceived as frames comprising:
– An Idle Line prior to transmission or reception
– A start bit
– A data word (8 or 9 bits) least significant bit first
– A Stop bit indicating that the frame is complete.
This nterface uses two types of baud rate generator:
– A conventional type for commonly-used baud
rates,
– An extended type with a prescaler offering a very
wide range of baud rates even with non-standard
oscillator frequencies.
114
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST72331J2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT MICROCONTROLLER (MCU) WITH 8/16K ROM/OTP/EPROM.256 EEPROM.384/512 BYTES RAM.ADC.WDG.SCI.SPI & 2 TIMERS - SDIP42/56. QFP44/64 |
| ST72331J2B1/XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| ST72331J2B6/XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| ST72331J2T1/XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| ST72331J2T6/XXX | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
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