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8051: Definition and Recommended Links

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The Intel 8051 is a Harvard architecture, single chip microcontroller (µC) which was developed by Intel in 1980 for use in embedded systems. Intel's original versions were popular in the 1980s and early 1990s, but has today largely been superseded by a vast range of faster and/or functionally enhanced 8051-compatible devices manufactured by more than 20 independent manufacturers including Atmel, Infineon Technologies, Maxim Integrated Products (via its Dallas Semiconductor subsidiary), NXP (formerly Philips Semiconductor), Winbond, ST Microelectronics, Silicon Laboratories (formerly Cygnal), Texas Instruments and Cypress Semiconductor. Intel's official designation for the 8051 family of µCs is MCS 51.

Intel's original 8051 family was developed using NMOS technology, but later versions, identified by a letter 'C' in their name, e.g. 80C51, used CMOS technology and were less power-hungry than their NMOS predecessors - this made them eminently more suitable for battery-powered devices.

Source: Wikipedia (http://en.wikipedia.org/wiki/8051)

other great electronics sites:ee toolbox site

• • 8051
    • The Intel 8051 is a Harvard architecture, single chip microcontroller (µC) which was developed by Intel in 1980 for use in embedded systems. Intel's original versions were popular in the 1980s and early 1990s, but has today largely been superseded by a vast range of faster and/or functionally enhanced 8051-compatible devices manufactured by more than 20 independent manufacturers including Atmel, Infineon Technologies, Maxim Integrated Products (via its Dallas Semiconductor subsidiary), NXP (formerly Philips Semiconductor), Winbond, ST Microelectronics, Silicon Laboratories (formerly Cygnal), Texas Instruments and Cypress Semiconductor. Intel's official designation for the 8051 family of µCs is MCS 51.

      Intel's original 8051 family was developed using NMOS technology, but later versions, identified by a letter 'C' in their name, e.g. 80C51, used CMOS technology and were less power-hungry than their NMOS predecessors - this made them eminently more suitable for battery-powered devices.

      Source: Wikipedia (http://en.wikipedia.org/wiki/8051)

      (Note: The Electronic Engineers Toolbox provides an alternative set of featured links for this word at http://www.cera2.com/8051.htm)

      Featured Links:

      IAR Development Kits

      IAR Systems provides completely integrated kits for development of embedded applications based on ARM, 8051, MSP430 and R8C/M16C/M32C: ARM kits 8051 kits MSP430 kits R8C/M16C/M32C kits Each kit contains a development board, software development tools with sample projects and a hardware debug probe or emulator.
      http://www.iar.com/website1/1.0.1.0/675/1/index.php

      Jan Axelson's Lakeview Research

      The source for information and tools relating to USB, parallel ports, RS-232 and RS-485 serial communications, 8052-Basic microcontrollers, and making printed-circuit boards. Mr. Axelson has written a number of books, and has created web pages of resources for each topic. Also has information on the Serial Port.
      http://wwwww.lvr.com/

      Free 8051 Macro Assembler

      The 8051 Cross Assembler takes an assembly language source file created with a text editor and translates it into a machine language object file. This translation process is done in two passes over the source file. During the first pass, the Cross Assembler builds a symbol table from the symbols and labels used in the source file.
      http://www.metaice.com/ASM51/ASM51.htm

      Architecture and Programming of 8051 Microcontrollers - Free eBook

      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...
      http://www.mikroe.com/en/books/8051book/

      Paul's 8051 Microcontroller Family (Free Stuff)

      Contents: AS31 Assembler & SDCC C Compiler PAULMON 8051 Family Monitor Low-Cost 8051 Development Board Design 8051 Code Library Atmel 89C2051 in-circuit programmer Other Resources
      http://www.pjrc.com/tech/8051/

      MicroControllers and Electronics page

      Welcome to my electronics page. I can currently play with chips only at nights and weekends, but my goal is to be back with my favorite job in a year or two, so I have started to prepare for it. I started playing with PIC 16F84 microcontroller but got bored quickly. The instruction set is disgusting, and although I enjoy working with small manageable things, 1684 is just a bit too limited for my taste.
      http://www.nomad.ee/micros/

      My Website of 8051

      Thank you for visiting my website. Here you will find some Free 8051 Microcontroller Projects & Free Electronic projects and kits I developped, targeted at the electronic hobbyists. I hope you enjoy reading about these kits. If you have an idea for a kit or project based on 8051 microcontroller, but you can't find anything on the internet, drop me a message and if it is an interesting idea, I may consider designing such a kit and add it...
      http://www.8051projects.info/

      FreeRTOS - Realtime Scheduler

      FreeRTOS.orgTM is a portable, open source, mini Real Time Kernel - a free to download and royalty free RTOS that can be used in commercial applications. Ports exist for many different processor architectures and development tools. Each official port includes a pre-configured example application demonstrating the kernel features, expediting learning, and permitting 'out of the box' development. Free support is provided by an active user...
      http://www.freertos.org/

      IAR Systems

      IAR Systems provides a range of development tools for embedded systems: integrated development environments (IDE) with C/C++ compilers and debuggers, development kits, hardware debug probes and state machine design tools. The product line supports 8051, ARM, AVR, MSP430 and many other 8-, 16-, and 32-bit MCUs from different chip manufacturers. [PowerPAC RTOS for ARM, ColdFire, MSP430]
      http://www.iar.com/

      Actel Corporation

      Actel is the leader in low-power and mixed-signal FPGAs, offering the most comprehensive portfolio of system and power management solutions. Power Matters. Learn more at www.actel.com. [Cores: 8051, ARM, CORTEX-M1, SPARC]
      http://www.actel.com/

      Explanation: these links are provided as part of our EE glossary project, which seeks to identify the most prominent keywords in embedded systems, embedded software, realtime and rtos, dsp (digital signal processing), system-on-a-chip, microprocessors and microcontrollers, and other constituent elements for embedded systems. While we seek to keep most of the links up-to-date, the user is refered to other primary electronic-based search sites such as: cera2.com, embedded.com, or EDN Magazine. If you have any suggestions of links or definitions, please email!

Mark Twain quote for the day:

We are strange beings, we seem to go free, but we go in chains -- chains of training, custom, convention, association, environment -- in a word, Circumstance -- and against these bonds the strongest of us struggle in vain.
- 3,000 Years Among the Microbes