最新无码a∨在线观看,一本av高清一区二区三区,亚洲熟妇色l20p,宅男噜噜69av,中出あ人妻熟女中文字幕

SCC2681

Dual asynchronous receiver/transmitter (DUART)

DESCRIPTION ThePhilipsSemiconductorsSCC2681DualUniversalAsynchronousReceiver/Transmitter(DUART)isasingle-chipMOS-LSIcommunicationsdevicethatprovidestwoindependentfull-duplexasynchronousreceiver/transmitterchannelsinasinglepackage.Itinterfacesdirectlywithmicroprocess

SCC2681AC1A44

Dual asynchronous receiver/transmitter (DUART)

DESCRIPTION ThePhilipsSemiconductorsSCC2681DualUniversalAsynchronousReceiver/Transmitter(DUART)isasingle-chipMOS-LSIcommunicationsdevicethatprovidestwoindependentfull-duplexasynchronousreceiver/transmitterchannelsinasinglepackage.Itinterfacesdirectlywithmicroprocess

SCC2681AC1N28

Dual asynchronous receiver/transmitter (DUART)

DESCRIPTION ThePhilipsSemiconductorsSCC2681DualUniversalAsynchronousReceiver/Transmitter(DUART)isasingle-chipMOS-LSIcommunicationsdevicethatprovidestwoindependentfull-duplexasynchronousreceiver/transmitterchannelsinasinglepackage.Itinterfacesdirectlywithmicroprocess

SCC2681AC1N28

雙通道異步接收器/發(fā)送器(DUART); 雙路全雙工異步接收器/發(fā)送器\n四重緩沖接收器數(shù)據(jù)寄存器\n可編程數(shù)據(jù)格式 5至8數(shù)據(jù)位外加奇偶校驗(yàn)\n奇、偶、無奇偶校驗(yàn)或強(qiáng)制奇偶校驗(yàn)\n可以1/16位的增量對(duì)1、1.5或2停止位進(jìn)行編程\n\n每個(gè)接收器和發(fā)送器可選的可編程波特率為： 22個(gè)固定速率：50至115.2 k波特\n\n16位可編程計(jì)數(shù)器/定時(shí)器 非標(biāo)準(zhǔn)速率至115.2 kb\n一個(gè)源自可編程計(jì)數(shù)器/定時(shí)器的用戶定義速率\n外部1×或16×?xí)r鐘\n\n奇偶校驗(yàn)、成幀和超載錯(cuò)誤檢測(cè)\n錯(cuò)誤起始位檢測(cè)\n線中止的產(chǎn)生和檢測(cè)\n可編程通道模式 正常（全雙工）\n自動(dòng)回波\n本地環(huán)回\n遠(yuǎn)程環(huán)回\n\n多功能可編程16位計(jì)數(shù)器/定時(shí)器\n多功能7位輸入端口 可用作時(shí)鐘或控制輸入\n四個(gè)輸入上的狀態(tài)更改檢測(cè)\n典型100 kΩ的上拉電阻\n\n多功能8位輸出端口 單獨(dú)位設(shè)置/復(fù)位能力\n可將輸出編程為狀態(tài)/中斷信號(hào)\nDMA信號(hào)\n自動(dòng)485逆轉(zhuǎn)\n\n通用中斷系統(tǒng) 帶有八個(gè)可屏蔽中斷條件的單中斷輸出\n可配置輸出端口以提供最多總共六個(gè)分離可“或運(yùn)算”線中斷輸出\n\n最大數(shù)據(jù)傳送：1× ? 1 MB/sec；16× ? 125 kB/sec\n多點(diǎn)應(yīng)用的自動(dòng)喚醒模式\n開始-結(jié)束暫停中斷/狀態(tài)\n檢測(cè)到字符中間發(fā)生間斷\n片上晶體振蕩器\n單個(gè)+5 V電源\n提供商用和工業(yè)溫度范圍\nDIP和PLCC封裝\n;

Philips Semiconductors SCC2681兩路通用異步接收器/發(fā)送器(DUART)是一款單芯片MOS-LSI通信器件，在單個(gè)封裝中提供兩條獨(dú)立的全雙工異步接收器/發(fā)送器通道。能直接連接微處理器，可用于輪詢或中斷驅(qū)動(dòng)系統(tǒng)。用CMOS工藝制造。\n可對(duì)各通道的工作模式和數(shù)據(jù)格式進(jìn)行單獨(dú)編程。另外，每個(gè)接收器和發(fā)送器可將其工作速度選為十八個(gè)固定波特率、源自可編程計(jì)數(shù)器/定時(shí)器的16×?xí)r鐘或外部1×或16×?xí)r鐘之一?？蓮木w或從外部時(shí)鐘輸入直接操作波特率生成器以及計(jì)數(shù)器/定時(shí)器。接收器和發(fā)送器工作速度的獨(dú)立編程能力使DUART特別適合雙速通道應(yīng)用，如集群終端系統(tǒng)。\n每個(gè)接收器均經(jīng)過四重緩沖以使接收器超載的可能性最小化，或降低中斷驅(qū)動(dòng)系統(tǒng)的中斷開銷。另外，提供流量控制能力以在接收器件的緩沖器已滿時(shí)禁用遠(yuǎn)程DUART發(fā)送器。\nSCC2681上還提供多用途7位輸入端口和多用途8位輸出端口。這些可用作通用I/O端口或在程序控制下分配特定的功能（如時(shí)鐘輸入或狀態(tài)/中斷輸出）。\nSCC2681提供三種封裝版本：40引腳和28引腳DIP（均為0.6\"寬）以及44引腳PLCC。\n

SCC2681AC1N40

雙通道異步接收器/發(fā)送器(DUART); 雙路全雙工異步接收器/發(fā)送器\n四重緩沖接收器數(shù)據(jù)寄存器\n可編程數(shù)據(jù)格式 5至8數(shù)據(jù)位外加奇偶校驗(yàn)\n奇、偶、無奇偶校驗(yàn)或強(qiáng)制奇偶校驗(yàn)\n可以1/16位的增量對(duì)1、1.5或2停止位進(jìn)行編程\n\n每個(gè)接收器和發(fā)送器可選的可編程波特率為： 22個(gè)固定速率：50至115.2 k波特\n\n16位可編程計(jì)數(shù)器/定時(shí)器 非標(biāo)準(zhǔn)速率至115.2 kb\n一個(gè)源自可編程計(jì)數(shù)器/定時(shí)器的用戶定義速率\n外部1×或16×?xí)r鐘\n\n奇偶校驗(yàn)、成幀和超載錯(cuò)誤檢測(cè)\n錯(cuò)誤起始位檢測(cè)\n線中止的產(chǎn)生和檢測(cè)\n可編程通道模式 正常（全雙工）\n自動(dòng)回波\n本地環(huán)回\n遠(yuǎn)程環(huán)回\n\n多功能可編程16位計(jì)數(shù)器/定時(shí)器\n多功能7位輸入端口 可用作時(shí)鐘或控制輸入\n四個(gè)輸入上的狀態(tài)更改檢測(cè)\n典型100 kΩ的上拉電阻\n\n多功能8位輸出端口 單獨(dú)位設(shè)置/復(fù)位能力\n可將輸出編程為狀態(tài)/中斷信號(hào)\nDMA信號(hào)\n自動(dòng)485逆轉(zhuǎn)\n\n通用中斷系統(tǒng) 帶有八個(gè)可屏蔽中斷條件的單中斷輸出\n可配置輸出端口以提供最多總共六個(gè)分離可“或運(yùn)算”線中斷輸出\n\n最大數(shù)據(jù)傳送：1× ? 1 MB/sec；16× ? 125 kB/sec\n多點(diǎn)應(yīng)用的自動(dòng)喚醒模式\n開始-結(jié)束暫停中斷/狀態(tài)\n檢測(cè)到字符中間發(fā)生間斷\n片上晶體振蕩器\n單個(gè)+5 V電源\n提供商用和工業(yè)溫度范圍\nDIP和PLCC封裝\n;

Philips Semiconductors SCC2681兩路通用異步接收器/發(fā)送器(DUART)是一款單芯片MOS-LSI通信器件，在單個(gè)封裝中提供兩條獨(dú)立的全雙工異步接收器/發(fā)送器通道。能直接連接微處理器，可用于輪詢或中斷驅(qū)動(dòng)系統(tǒng)。用CMOS工藝制造。\n可對(duì)各通道的工作模式和數(shù)據(jù)格式進(jìn)行單獨(dú)編程。另外，每個(gè)接收器和發(fā)送器可將其工作速度選為十八個(gè)固定波特率、源自可編程計(jì)數(shù)器/定時(shí)器的16×?xí)r鐘或外部1×或16×?xí)r鐘之一。可從晶體或從外部時(shí)鐘輸入直接操作波特率生成器以及計(jì)數(shù)器/定時(shí)器。接收器和發(fā)送器工作速度的獨(dú)立編程能力使DUART特別適合雙速通道應(yīng)用，如集群終端系統(tǒng)。\n每個(gè)接收器均經(jīng)過四重緩沖以使接收器超載的可能性最小化，或降低中斷驅(qū)動(dòng)系統(tǒng)的中斷開銷。另外，提供流量控制能力以在接收器件的緩沖器已滿時(shí)禁用遠(yuǎn)程DUART發(fā)送器。\nSCC2681上還提供多用途7位輸入端口和多用途8位輸出端口。這些可用作通用I/O端口或在程序控制下分配特定的功能（如時(shí)鐘輸入或狀態(tài)/中斷輸出）。\nSCC2681提供三種封裝版本：40引腳和28引腳DIP（均為0.6\"寬）以及44引腳PLCC。\n

SCC2681AC1N40

Dual asynchronous receiver/transmitter (DUART)

DESCRIPTION ThePhilipsSemiconductorsSCC2681DualUniversalAsynchronousReceiver/Transmitter(DUART)isasingle-chipMOS-LSIcommunicationsdevicethatprovidestwoindependentfull-duplexasynchronousreceiver/transmitterchannelsinasinglepackage.Itinterfacesdirectlywithmicroprocess

SCC2681AE1A44

Dual asynchronous receiver/transmitter (DUART)

DESCRIPTION ThePhilipsSemiconductorsSCC2681DualUniversalAsynchronousReceiver/Transmitter(DUART)isasingle-chipMOS-LSIcommunicationsdevicethatprovidestwoindependentfull-duplexasynchronousreceiver/transmitterchannelsinasinglepackage.Itinterfacesdirectlywithmicroprocess

SCC2681AE1A44

Dual asynchronous receiver/transmitter (DUART); Dual full-duplex asynchronous receiver/transmitter\nQuadruple buffered receiver data registers\nProgrammable data format 5 to 8 data bits plus parity\nOdd, even, no parity or force parity\n1, 1.5 or 2 stop bits programmable in 1/16-bit increments\nProgrammable baud rate for each receiver and transmitter selectable from: 22 fixed rates: 50 to 115.2 k baud\n16-bit programmable Counter/Timer Non-standard rates to 115.2 kb\nOne user-defined rate derived from programmable timer/counter\nExternal 1× or 16× clock\nParity, framing, and overrun error detection\nFalse start bit detection\nLine break detection and generation\nProgrammable channel mode Normal (full-duplex)\nAutomatic echo\nLocal loopback\nRemote loopback\nMulti-function programmable 16-bit counter/timer\nMulti-function 7-bit input port Can serve as clock or control inputs\nChange of state detection on four inputs\n100 kΩ typical pull-up resistor\nMulti-function 8-bit output port Individual bit set/reset capability\nOutputs can be programmed to be status/interrupt signals\nDMA signals\nAuto 485 turn-around\nVersatile interrupt system Single interrupt output with eight maskable interrupting conditions\nOutput port can be configured to provide a total of up to six separate wire-ORable interrupt outputs\nMaximum data transfer: 1× ? 1 MB/sec; 16× ? 125 kB/sec\nAutomatic wake-up mode for multidrop applications\nStart-end break interrupt/status\nDetects break which originates in the middle of a character\nOn-chip crystal oscillator\nSingle +5 V power supply\nCommercial and industrial temperature ranges available\nDIP and PLCC packages\n;

Archived content is no longer updated and is made available for historical reference only.\nThe Philips Semiconductors SCC2681 Dual Universal Asynchronous Receiver/Transmitter (DUART) is a single-chip MOS-LSI communications device that provides two independent full-duplex asynchronous receiver/transmitter channels in a single package. It interfaces directly with microprocessors and may be used in a polled or interrupt driven system. It is manufactured in a CMOS process.\nThe operating mode and data format of each channel can be programmed independently. Additionally, each receiver and transmitter can select its operating speed as one of eighteen fixed baud rates, a 16× clock derived from a programmable counter/timer, or an external 1× or 16× clock. The baud rate generator and counter/timer can operate directly from a crystal or from external clock inputs. The ability to independently program the operating speed of the receiver and transmitter make the DUART particularly attractive for dual-speed channel applications such as clustered terminal systems.\nEach receiver is quadruply buffered to minimize the potential of receiver over-run or to reduce interrupt overhead in interrupt driven systems. In addition, a flow control capability is provided to disable a remote DUART transmitter when the buffer of the receiving device is full.\nAlso provided on the SCC2681 are a multipurpose 7-bit input port and a multipurpose 8-bit output port. These can be used as general purpose I/O ports or can be assigned specific functions (such as clock inputs or status/interrupt outputs) under program control.\nThe SCC2681 is available in three package versions: 40-pin and 28-pin DIPs (both 0.6? wide); and a 44-pin PLCC.\n

SCC2681AE1N28

Dual asynchronous receiver/transmitter (DUART)

DESCRIPTION ThePhilipsSemiconductorsSCC2681DualUniversalAsynchronousReceiver/Transmitter(DUART)isasingle-chipMOS-LSIcommunicationsdevicethatprovidestwoindependentfull-duplexasynchronousreceiver/transmitterchannelsinasinglepackage.Itinterfacesdirectlywithmicroprocess

SCC2681AE1N40

Dual asynchronous receiver/transmitter (DUART)

DESCRIPTION ThePhilipsSemiconductorsSCC2681DualUniversalAsynchronousReceiver/Transmitter(DUART)isasingle-chipMOS-LSIcommunicationsdevicethatprovidestwoindependentfull-duplexasynchronousreceiver/transmitterchannelsinasinglepackage.Itinterfacesdirectlywithmicroprocess