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INS8250 Datasheet Asynchronous Receiver/Transmitter

Manufacturer: National Semiconductor (now Texas Instruments)

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General Description

Each of these parts function as a serial data input/output interface in a microcomputer system.

The system software determines the functional configuration of the UART via a TRI-STATE® 8-bit bidirectional data bus.

The UART performs serial-to-parallel conversion on data characters received from a peripheral device or a MODEM, and parallel-to-serial conversion on data characters re­ ceived from the CPU.

Overview

INS8250/INS8250-B National Sem iconductor INS8250, INS8250-B Universal Asynchronous Receiver/Transmitter.

Key Features

  • Easily interfaces to most popular microprocessors.
  • Adds or deletes standard asynchronous communication bits (start, stop, and parity) to or from serial data stream.
  • Holding and shift registers eliminate the need for pre­ cise synchronization between the CPU and the serial data.
  • Independently controlled transmit, receive, line status, and data set interrupts.
  • Programmable baud generator allows division of any in­ put clock by 1 to (216 - 1) and generates the internal.

More Datasheets from National Semiconductor (now Texas Instruments)

Part Number Description
INS8250-B Asynchronous Receiver/Transmitter
INS8250A UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER
INS8251 Programmable Communication Interface
INS8253 Programmable Interval Timer
INS8254 N-Channel Bit Programmable Peripherallnterface
INS8255 Programmable Peripheral Interface
INS8255N Programmable Peripheral Interface
INS8257 Programmable DMA Controller
INS8259 Programmable Interrupt Controller
INS8202 Octal Buffers