Datasheet4U Logo Datasheet4U.com

PC16550D - Universal Asynchronous Receiver/Transmitter

General Description

The PC16550D is an improved version of the original 16450 Universal Asynchronous Receiver Transmitter (UART) Functionally identical to the 16450 on powerup (CHARACTER mode) the PC16550D can be put into an alternate mode (FIFO mode) to relieve the CPU of excessive software overhead In this mode inter

Key Features

  • Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Capable of running all existing 16450 software Pin for pin compatible with the existing 16450 except for CSOUT (24) and NC (29) The former CSOUT and NC pins are TXRDY and RXRDY respectively After reset all registers are identical to the 16450 register set In the FIFO mode transmitter and receiver are each buffered with 16 byte FIFO’s to reduce the number of interrrupts presented to the CPU Adds or deletes standard asynchronous communication bits (start s.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
PC16550D Universal Asynchronous Receiver/Transmitter Texas Instruments
PC1601-A Display Module POWERTIP
pc1601-E Display Module POWERTIP
PC1601-F LCD Powertip Technology
PC1601-G LCD Powertip Technology

Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
PC16552C Dual Universal Asynchronous Receiver/Transmitter
PC16552D Dual Universal Asynchronous Receiver/Transmitter with FIFOs
PC16553 Dual Universal Asynchronous Receiver/Transmitter
PC16450C Universal Asynchronous Receiver/Transmitter

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
PC16550D Universal Asynchronous Receiver Transmitter with FIFOs June 1995 PC16550D Universal Asynchronous Receiver Transmitter with FIFOs General Description The PC16550D is an improved version of the original 16450 Universal Asynchronous Receiver Transmitter (UART) Functionally identical to the 16450 on powerup (CHARACTER mode) the PC16550D can be put into an alternate mode (FIFO mode) to relieve the CPU of excessive software overhead In this mode internal FIFOs are activated allowing 16 bytes (plus 3 bits of error data per byte in the RCVR FIFO) to be stored in both receive and transmit modes All the logic is on chip to minimize system overhead and maximize system efficiency Two pin functions have been changed to allow signalling of DMA transfers The UART performs serial-to-parallel co