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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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.

This page was last edited on 28 Novemberat National Semiconductor later released the A which corrected this issue. Dropouts occurred with The A F version was a must-have to use modems with a data transmit rate of baud.


The original had a bug that prevented this FIFO from being used. To overcome these shortcomings, the series Datasjeet incorporated a byte FIFO buffer with a programmable interrupt trigger of 1, 4, 8, or 14 bytes.

The current version since by Texas Instruments which bought National Semiconductor is called the D. Views Read Edit View history. 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.

16550 UART

The corrected -A version was released in by National Semiconductor. By using this site, you agree to the Terms of Use and Privacy Policy.

The Art of Serial Communication. The A and newer is pin compatible with the The part was originally made by National Semiconductor.

UART – Wikipedia

Interfaces are listed by their speed in the roughly ascending order, so the interface at the end of each section should be the fastest. Retrieved from ” https: Not all manufacturers adopted this nomenclature, however, continuing to refer to the fixed chip as a Similarly numbered devices, with varying levels of compatibility with the original National Semiconductor part, are made by other manufacturers.


Pages using web citations with no URL. This generated high rates of interrupts as transfer speeds increased.

From Wikipedia, the free encyclopedia. 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.

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Exchange of the having 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 datawheet of high-speed connections. The C and CF models are okay too, according to this source. Technical and de facto standards for wired computer buses.