P8251A – Programmable Communication Interface (USART)

Description

Technical specifications:

• Device type: USART – Universal Synchronous/Asynchronous Receiver/Transmitter
• Communication modes: Synchronous and Asynchronous
• Data bits: 5 to 8 bits (programmable)
• Stop bits: 1, 1.5, or 2 (programmable)
• Parity: Even, odd, or none (programmable)
• Interface: Parallel data bus compatible with Intel microprocessors
• Operating voltage: Typically +5V
• Package type: DIP-28 or equivalent
• Operating temperature: 0°C to +70°C (commercial grade)
• Applications: Embedded systems, serial communication interfaces, instrumentation, industrial control

Product features:

• Flexible communication modes: Supports both synchronous and asynchronous operations.
• Full-duplex capability: Simultaneous transmission and reception for efficient data handling.
• Programmable format: Word length, stop bits, and parity options can be configured via control words.
• Baud rate control: Can be used with external baud rate generators for versatile speed control.
• Status reporting: Provides error flags, transmit/receive ready, and other status indicators.
• Compact integration: Simple interface with 8085/8086 and other microprocessor systems.