Standard 16C • to volt operation. • 24MHz clock operation at 5V. • 16MHz clock operation at V. • 16 byte transmit FIFO. • 16 byte receive FIFO. 16C UART Interface IC are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for 16C UART Interface IC. To obtain the most up-to-date version of this data sheet, please register at .. 16C COMPATIBLE. SERIAL. PORT 1. TXD1, nRTS1, nDTR1.

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Dropouts occurred with Interfaces are listed by dstasheet speed in the roughly ascending order, so the interface at the end of each section should be the fastest. Retrieved from ” https: National Semiconductor later released the A which corrected this issue. Not all manufacturers adopted this nomenclature, however, continuing to refer to the fixed chip as a Views Read Edit View history.


The C and CF models are okay too, according to this source. More critically, with only a 1-byte buffer there is a genuine risk that a received byte will be overwritten if interrupt service delays occur. This page was last edited on 28 Novemberat The original had a bug that prevented this FIFO from being used.

The part was originally made by National Semiconductor. By using this site, you agree to the Terms of Use and Privacy Policy.

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The Art of Serial Communication. Technical and de facto standards for wired computer buses. Exchange of the 61c550 only a one-byte received data buffer with aand occasionally patching or setting system software to be aware of the FIFO feature of the new chip, improved the reliability and stability of high-speed connections.

This generated high rates of interrupts as transfer speeds increased. To overcome these shortcomings, the series UARTs incorporated a byte FIFO buffer with a programmable interrupt trigger of 1, 4, 8, or 14 bytes.


16550 UART

At speeds higher than baudowners discovered that the serial ports of the computers were not able to handle a continuous flow of data without losing characters. Similarly numbered devices, with varying levels of compatibility with the original National Semiconductor part, are made by other manufacturers.

The corrected -A version was released in by National Semiconductor. Pages using web citations with no URL. From Wikipedia, the free encyclopedia.

The also incorporates a transmit FIFO, though this feature is less critical as delays in interrupt service would only result in sub-optimal transmission speeds and not actual data loss. The A F version was a must-have to use modems with a data transmit rate of baud.

The A and newer is pin compatible with the The current version since by Texas Instruments which bought National Semiconductor is called the D.