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| 型號： | ST72321BM |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 80-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE(具有ICP,IAP,Nested Interrupt,TLI,ROP的8位MCU) |
| 中文描述： | 80引腳8位微控制器32至60,000閃存/ ROM，ADC的，5個定時器，SPI和SCI的I2C接口（具有比較方案，國際檢察官聯(lián)合會，嵌套中斷，中華語文研習(xí)所，人事登記的8位微控制器） |
| 文件頁數(shù)： | 95/178頁 |
| 文件大小： | 3121K |
| 代理商： | ST72321BM |
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ST72F321M, ST72321BM
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9.6 SERIAL COMMUNICATIONS INTERFACE (SCI)
9.6.1 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.
9.6.2 Main Features
■
Full duplex, asynchronous communications
■
NRZ standard format (Mark/Space)
■
Dual baud rate generator systems
■
Independently programmable transmit and
receive baud rates up to 500K baud
■
Programmable data word length (8 or 9 bits)
■
Receive buffer full, Transmit buffer empty and
End of Transmission flags
■
Two receiver wake-up modes:
– Address bit (MSB)
– Idle line
■
Muting function for multiprocessor configurations
■
Separate enable bits for Transmitter and
Receiver
■
Four error detection flags:
– Overrun error
– Noise error
– Frame error
– Parity error
■
Five interrupt sources with flags:
– Transmit data register empty
– Transmission complete
– Receive data register full
– Idle line received
– Overrun error detected
■
Parity control:
– Transmits parity bit
– Checks parity of received data byte
■
Reduced power consumption mode
9.6.3 General Description
The interface is externally connected to another
device by two pins (see
Figure 2.
):
– TDO: Transmit Data Output. When the transmit-
ter and the receiver are disabled, the output pin
returns to its I/O port configuration. When the
transmitter and/or the receiver are enabled 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 these pins, serial data is transmitted and
received 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
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| ST72F321J7TA | 64/44-PIN 8-BIT MCU WITH 32 TO 60K FLASH/ROM, ADC, FIVE TIMERS, SPI, SCI, I2C INTERFACE |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST72321BR6-AUTO | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface |
| ST72321BR7-AUTO | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface |
| ST72321BR9-AUTO | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface |
| ST72321BXXX-AUTO | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface |
| ST72321J | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, 5 TIMERS, SPI, SCI, I2C INTERFACE |
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