SCC2692AC1A44,512 NXP

INTEGRATED CIRCUITS SCC2692 Dual asynchronous receiver/transmitter (DUART) Product specification 1998 Sep 04 Supersedes data of 1998 Feb 19 IC19 Data Handbook Philips Semiconductors Product specification Dual asynchronous receiver/transmitter (DUART) SCC2692 Non-standard user-defined rate derived from programmable DESCRIPTION counter/timer The Philips Semiconductors SCC2692 Dual Universal Asynchronous Receiver/Transmitter (DUART) which is compatible External 1X or 16X clock with the SCN2681. It is a single-chip CMOS-LSI communications Parity, framing, and overrun error detection device that provides two full-duplex asynchronous receiver/transmitter channels in a single package. It interfaces False start bit detection directly with microprocessors and may be used in a polled or Line break detection and generation interrupt driven system. Programmable channel mode The operating mode and data format of each channel can be programmed independently. Additionally, each receiver and Normal (full-duplex) transmitter can select its operating speed as one of eighteen fixed Automatic echo baud rates, a 16X clock derived from a programmable counter/timer, Local loopback or an external 1X or 16X clock. The baud rate generator and Remote loopback counter/timer can operate directly from a crystal or from external Multidrop mode (also called wake-up or 9-bit) clock inputs. The ability to independently program the operating speed of the receiver and transmitter make the DUART particularly Multi-function 7-bit input port attractive for dual-speed channel applications such as clustered Can serve as clock or control inputs terminal systems. Change of state detection on four inputs Each receiver is quadruply buffered to minimize the potential of Inputs have typically >100k pull-up resistors receiver over-run or to reduce interrupt overhead in interrupt driven Multi-function 8-bit output port systems. In addition, a flow control capability is provided to disable a remote DUART transmitter when the receiver buffer is full. Individual bit set/reset capability Outputs can be programmed to be status/interrupt signals Also provided on the SCC2692 are a multipurpose 7-bit input port and a multipurpose 8-bit output port. These can be used as general Versatile interrupt system purpose I/O ports or can be assigned specific functions (such as Single interrupt output with eight maskable interrupting clock inputs or status/interrupt outputs) under program control. conditions Output port can be configured to provide a total of up to six separate wire-ORable interrupt outputs FEATURES Maximum data transfer rates: 1X 1MB/sec, 16X 125kB/sec Dual full-duplex asynchronous receiver/transmitters Automatic wake-up mode for multidrop applications Quadruple buffered receiver data register Start-end break interrupt/status Programmable data format 5 to 8 data bits plus parity Detects break which originates in the middle of a character Odd, even, no parity or force parity On-chip crystal oscillator 1, 1.5 or 2 stop bits programmable in 1/16-bit increments Power down mode 16-bit programmable Counter/Timer Receiver timeout mode Programmable baud rate for each receiver and transmitter Commercial and industrial temperature range versions selectable from: 22 fixed rates: 50 to 115.2k baud TTL compatible Non-standard rates to 115.2Kb Single +5V power supply ORDERING INFORMATION COMMERCIAL INDUSTRIAL DESCRIPTION DWG V = +5V +10%, V = +5V +10%, CC CC T = 0 to +70C T = -40 to +85C A A 1 40-Pin Plastic Dual In-Line Package (DIP) SCC2692AC1N40 SCC2692AE1N40 SOT129-1 1 28-Pin Plastic Dual In-Line Package (DIP) SCC2692AC1N28 SCC2692AE1N28 SOT117-1 44-Pin Plastic Leaded Chip Carrier (PLCC) Package SCC2692AC1A44 SCC2692AE1A44 SOT187-2 44Pin Plastic Quad Flat Pack (PQFP) SCC2692AC1B44 SCC2692AE1B44 SOT3072 NOTE: 1. For availability, please contact factory. 1998 Sep 04 2 8530895 19971