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PC16550DVEF Datasheet PDF

National Semiconductor
Part Number PC16550DVEF
Manufacturer National Semiconductor
Title PC16550D Universal Asynchronous Receiver/Transmitter with FIFOs
Description The PC16550D is an improved version of the original 16450 Universal Asynchronous Receiver Transmitter (UART) Functionally identical to the 16450 o...
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...

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PC16550DVEF PC16550DVEF PC16550DVEF




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PC16550DV : 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 conversion on data characters received from a peripheral devic.




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