- Dual Asynchronous Reciiver/Transmitter IC
- Features
- M6800 Bus Compatible
- Two, Independent, Full-Duplex Asynchronous
- Receiver/Transmitter Channes
- Maximum Data Transfer
- 1X - 1 Mbps
- 16X - 125 kbps
- Quadruple-Buffered Receiver Data Registers
- Double-Buffered Transmitter Data Registers
- Independently Programmable Baud Rate for
- Each Receiver and Transmitter
- Selectable from :
- 18 Fixed Rates : 50 to 38.4k Baud
- One User-Defined Rate Derived from a
- Programmable Timer/Counter
- External 1X Clock or 16X Clock
- Programmable Data Format
- Five to Eight Data Bits plus Parity
- Odd, Even, No Parity, or Force Parity
- One, One and One-Half, or Two Stop Bits
- Programmable in One-Sixteenth-bit Increments
- Programmable Channel Modes
- Normal (Full Duplex)
- Automatic Echo
- Local Loopback
- Remote Loopback
- Automatic Wakeup Mode for Multidrop Applications
- Multifunction 6-Bit Input Port
- Can Serve as Clock or Control Inputs
- Charge-of-State Detection on Four Inputs
- Multifunction 8-Bit Output Port
- Individual Bit Set/Reset Capability
- Outputs Can Be Programmable To Be Status/Interrup
- Signals
- Multifuntion 16-Bit Programmable Counter/Timer
- Versatile Interrupt System
- Single Interrupt Output with Maskable Interrpting
- Conditions
- Interrupt Vector Output on Interrup Acknowledge
- Output Port Can Be Configured To Provide a Total
- of up to Six Separate Wire-ORable Interrupt Outputs
- Parity, Framing, and Overrun Error Detection
- False-start Bit Detection
- Line-Break detection and Generation
- Detects Break Originating in the Middle of a Character
- Start-End Break Interrupt/Status
- On-Chip Crystal Oscillator
- TTL Compatible
- Single +5 - V Power Supply
| |