Programmable Communication Interface

• Synchronous and Asynchronous Operation
• Synchronous 5-8 Bit Characters
  • Internal or External Character Synchronisation
  • Automatic Sync. Insertion
• Asynchronous 5-8 Bit Characters
  • Clock Rate: 1, 16, 64 Times Baud Rate
  • Break Character Generation
  • 1, 1½, 2 Stop Bits
  • False Start Bit Detection
  • Automatic Break Detection Handling
• Synchronous Baud Rate: DC to 64 k Baud
• Asynchronous Baud Rate: DC to 19.2 k Baud
• Full-Duplex, Double Buffered Transmitter and Receiver
• Error Detection: Parity, Overrun, Framing.
• Compatible with an Extended Range of Intel Microprocessors
• 28-pin DIP Package
• All Inputs and Outputs are TTL Compatible
• Available in Express and Military Versions

(Data taken from Intel 8251A Datasheet)