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參數(shù)資料
| 型號： | 935051510518 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 2 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PQCC44 |
| 封裝： | PLASTIC, MO-047AC, SOT-187-2, LCC-44 |
| 文件頁數(shù)： | 26/36頁 |
| 文件大?。?/td> | 314K |
| 代理商： | 935051510518 |
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Philips Semiconductors - PIP - SC26C92; Dual universal asynchronous receiver/transmitter (DUART)
Product Information
SC26C92; Dual
universal
asynchronous
receiver/transmitter
(DUART)
Information as of 2003-04-22
Stay informed
Download datasheet
Applications
Block diagram
topGeneral description
The SC26C92 is a pin and function replacement for the SCC2692 and SCN2681 with added features and deeper
FIFOs. Its configuration on power up is that of the 2692. Its differences from the 2692 are: 8 character receiver,
8 character transmit FIFOs, watch dog timer for each receiver, mode register 0 is added, extended baud rate and
overall faster speeds, programmable receiver and transmitter interrupts. (The SCC2692 is not being
discontinued.)
The Philips Semiconductors SC26C92 Dual Universal Asynchronous Receiver/Transmitter (DUART) is a single-
chip CMOS-LSI communications device that provides two 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 and provides modem and DMA interface.
The 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 27 fixed baud rates, a 16X clock derived from a
programmable counter/timer, or an external 1X or 16X 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.
Each receiver and transmitter is buffered by eight character FIFOs to minimize the potential of receiver overrun,
transmitter underrun and to reduce interrupt overhead in interrupt driven systems. In addition, a flow control
capability is provided via RTS/CTS signaling to disable a remote transmitter when the receiver buffer is full.
Also provided on the SC26C92 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.
The SC26C92 is available in three package versions: 40-pin 0.6" wide DIP, a 44-pin PLCC and 44-pin plastic
quad flat pack (PQFP).
file:///G|/imaging/BITTING/CPL/20030424/04232003_9/PHGL/_HTML04232003/SC26C92C1A.html (1 of 5) [May-08-2003 4:52:57 PM]
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