Here you have a table of all 8051 instructions with opcodes, size in bytes, mnemonic and operands.

Here you have a detailed description of all 8051 instructions.

Here you can find manuals, data sheets, application notes, FAQs, papers, software support, etc.

All 8051 instructions on one page.

This web site is dedicated exclusively to the 8052 mirocontroller, 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 the Atmel AT89S8252, and many derivatives by Silicon Laboratories, Philips, and many others.

The 8051 is the original member of the MCS® 51 family, and is the core for all MCS 51 devices. Here you can find user's manual in PDF format.

Learn in a quick and easy way to program 8051 microcontroller using many practical examples we have provided for you. Despite its relative old age, 8051 is still the most commonly used microcontroller at present. Beside Intel, many other renowned companies manufacture this model - Philips, Siemens, etc. The book contains details of its architecture and many practical examples, both simple and complex, useful program routines, instructions on handling the programmer for Atmel 51 series, and the guide on using the development systems for Atmel microcontrollers. In the appendices you will find detailed assembler instructions with examples, glossary and much more...

Rickey's world of Microcontrollers and Microprocessors. Here you will find everything related to microcontrollers, you can download codes, libraries, examples, discuss about your projects and ask doubts in the forum.

Here you'll find bits and pieces to help with the 8051 family. There'll be snippets of code, tips, tricks, and circuit details.

Independent website that is managed by a small group of fanatics. The ultimate purpose of this website is to give you the opportunity to make an informed sourcing decision by providing you with brutally objective information. This is a no-spin website. We do this by giving you accurate information in the directory listings along with a top-notch industry recognized news desk.

Lots of embedded projects, links and downloads (including port of Adam Dunkels' uIP v0.9 TCP/IP stack and webserver to an 8051 microcontroller, Sector-Level Compact Flash Driver Source Code for the 8051 Microcontroller, FAT16 DOS FILESYSTEM Source Code for the 8051 and much more).

ASEM-51 is a two-pass macro assembler for the Intel MCS-51 family of microcontrollers. It is running on the PC under MS-DOS, Windows and Linux. The ASEM-51 assembly language is based on the standard Intel syntax, and implements conditional assembly, macros, and include file processing. The assembler can output object code in Intel-HEX or Intel OMF-51 format as well as a detailed list file. The ASEM-51 package includes support for more than 180 8051 derivatives, a bootstrap program for MCS-51 target boards, and documentation in ASCII and HTML format. And it is free ...

SDCC is a retargettable, optimizing ANSI - C compiler that targets the Intel 8051, Maxim 80DS390, Zilog Z80 and the Motorola 68HC08 based MCUs. Work is in progress on supporting the Microchip PIC16 and PIC18 series. SDCC is Free Open Source Software, distributed under GNU General Public License (GPL).

Some videos about 8051 microcontroller and 8051 projects.

Here you will find some Free 8051 Microcontroller Projects and Free Electronic projects and kits, targeted at the electronic hobbyists.