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Enables serial data transmission.
Retrocomputing
Prototyping

UART8251A. PCB. RCbus

Sold by CloneFactory

$4.66

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Original Design
This product was designed by CloneFactory. By buying this product your support original hardware creators.

8251A UART.

Independent clock generator.

Standard baud rates regardless of CPU clock speed.

Almost every crystal.

Allows the use of almost any crystal to achieve standard baud rates.

  • Baud rate: 2400, 4800, 9600, 19200.

  • Crystal: 1.2288 MHz, 1.8432 MHz, 2.4576 MHz, 3.0720 MHz, 3.6864 MHz, 4.9152 MHz, 5.5296 MHz, 6.1440 MHz, 7.3728 MHz, 9.9304 MHz.

Safety.

Please exercise caution and follow good safety practices. You will be working with sharp knives, a hot soldering iron, and small metal components. Be mindful of the risks involved in the build process. I will do my best to answer any questions you may have.

Links to code and documentation

Documentation (github.com)

Design Files (github.com)

Schematics (github.com)

Shipping policy

The products can be shipped to any European Union country. Please request the shipping cost if your destination is not listed.

This product does not ship to United States.
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The seller

CloneFactory

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Niepruszewo, Poland
2 orders since Nov 25, 2025
Retrocomputing with Z80.