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SCN68681C1A44
2 Channel(s) 1M Bps Serial Comm Controller PQCC44SCN68681C1A44
2 Channel(s) 1M Bps Serial Comm Controller PQCC44
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SCN68681C1A44 數據表
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詳細說明
The Philips Semiconductors SCN68681 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 is compatible with other S68000 family devices, and can also interface easily with other microprocessors. The DUART can be used in polled or interrupt driven systems.FEATURES• S68000 bus compatible• Dual full-duplex asynchronous receiver/transmitter• Quadruple buffered receiver data registers• Programmable data format – 5 to 8 data bits plus parity – Odd, even, no parity or force parity – 1, 1.5 or 2 stop bits programmable in 1/16-bit increments• Programmable baud rate for each receiver and transmitter selectable from: – 22 fixed rates: 50 to 115.2k baud – Non-standard rates to 115.2kb – Non-standard user-defined rate derived from programmable counter/timer – External 1X or 16X clock• 16-bit programmable Counter/Timer• Parity, framing, and overrun error detection• False start bit detection• Line break detection and generation• Programmable channel mode – Normal (full-duplex) – Automatic echo – Local loopback – Remote loopback• Multi-function programmable 16-bit counter/timer• Multi-function 6-bit input port – Can serve as clock or control inputs – Change-of-state detection on four inputs – 100kΩ typical pull-up resistors• Multi-function 8-bit output port – Individual bit set/reset capability – Outputs can be programmed to be status/interrupt signals• Versatile interrupt system– Single interrupt output with eight maskable interrupting conditions – Interrupt vector output on interrupt acknowledge – Output port can be configured to provide a total of up to six separate wire-ORable interrupt outputs• Maximum data transfer rates: 1X - 1MB/sec, 16X - 125kB/sec• Automatic wake-up mode for multidrop applications• Start-end break interrupt/status• Detects break which originates in the middle of a character• On-chip crystal oscillator• Single +5V power supply• Commercial and industrial temperature ranges available• DIP and PLCC packages
主要特徵
- S68000 bus compatible
- Dual full-duplex asynchronous receiver/transmitter
- Quadruple buffered receiver data registers
- Programmable data format
- – 5 to 8 data bits plus parity
- – Odd, even, no parity or force parity
- – 1, 1.5 or 2 stop bits programmable in 1/16-bit increments
- Programmable baud rate for each receiver and transmitter selectable from:
- – 22 fixed rates: 50 to 115.2k baud
- – Non-standard rates to 115.2kb
- – Non-standard user-defined rate derived from programmable counter/timer
- – External 1X or 16X clock
- 16-bit programmable Counter/Timer
- Parity, framing, and overrun error detection
- False start bit detection
- Line break detection and generation
- Programmable channel mode
- – Normal (full-duplex)
- – Automatic echo
- – Local loopback
- – Remote loopback
- Multi-function programmable 16-bit counter/timer
- Multi-function 6-bit input port
- – Can serve as clock or control inputs
- – Change-of-state detection on four inputs
- – 100kΩ typical pull-up resistors
- Multi-function 8-bit output port
- – Individual bit set/reset capability
- – Outputs can be programmed to be status/interrupt signals
- Versatile interrupt system
- – Single interrupt output with eight maskable interrupting conditions
- – Interrupt vector output on interrupt acknowledge
- – Output port can be configured to provide a total of up to six separate wire-ORable interrupt outputs
- Maximum data transfer rates: 1X - 1MB/sec, 16X - 125kB/sec
- Automatic wake-up mode for multidrop applications
- Start-end break interrupt/status
- Detects break which originates in the middle of a character
- On-chip crystal oscillator
- Single +5V power supply
- Commercial and industrial temperature ranges available
- DIP and PLCC packages
規格
以下是所選零件的基本參數，涉及零件的特性及其所屬類別。
| Manufacturer | PHILIPS | Product Category ! | IC Chips |
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。
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