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Welcome to!

Welcome to The 8052 Online Resource, a free service provided courtesy of Vault Information Services.


This web site is dedicated exclusively to the 8052 microcontroller, related products (both hardware and software), and 8052 derivative chips. This includes the traditional 8052, 8051, 8032, and 8031 along with more modern derivatives such as those by Atmel, NXP, Silicon Laboratories, and many others.

This site is divided into a number of sections, each of which can be selected by using the menu on the left-hand side of your screen (you need JavaScript enabled for best results). We have a tutorial section for the programmer or student that is just learning about the 8052 microcontroller. We have a reference section for the proficient developer who just needs to access some quick reference information. We also have an entire code library in which you may find the code you need to write already written and ready to use. We have links to other quality 8052 sites that may be able to supplement the information on this site. In addition, we have a message forum with over 11 years of messages on a huge variety of 8052 development topics--or you can post your own new messages and questions to the forum.

Please spread the word about this site to friends and coworkers. Feel free to link to it on your web pages. If you have code or literature that you'd like to contribute to the site contribute it here. We're interested in any and all material that we can get our hands on to pass on to other members of this site.

And, of course, enjoy your stay at