microcontroller


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microcontroller

[¦mī·krō·kən′trōl·ər]
(electronics)
A microcomputer, microprocessor, or other equipment used for precise process control in data handling, communication, and manufacturing.

microcontroller

(processor)
A microprocessor on a single integrated circuit intended to operate as an embedded system. As well as a CPU, a microcontroller typically includes small amounts of RAM and PROM and timers and I/O ports.

An example is the Intel 8751.

microcontroller

A single chip that contains the processor (CPU), non-volatile memory (flash memory or ROM) for the program, volatile memory (RAM) for processing the data, a clock and an I/O control unit. Microcontroller units (MCUs) are available in numerous sizes and architectures. See CPU, flash memory, ROM, RAM and clock.

They Don't Get the Publicity
Because MCUs contain only 8-, 16- or 32-bit CPUs and cost just a few dollars or even less than one dollar, they do not get the mainstream attention as do the latest 64-bit chips in a PC or graphics card, which cost several hundred dollars. MCUs also do not require the state-of-the-art chip technology (see process technology).

However, MCUs are everywhere, and billions of these "computers on a chip" are embedded in products from toys to appliances to just about anything. New cars can employ a couple hundred of them. For example, an entire MCU might be dedicated to a simple task such as waiting for the driver to close the car door or press a particular button on the dashboard. See embedded system and automotive systems.


Motorola 6801 - One of the First
Introduced in 1978, the 6801 was one of the first semiconductor products to claim the "computer on a chip" moniker. These magnified images show the entire chip (top), about three quarters of the 256 bytes of RAM (left) and only a few bytes at 400x.


Motorola 6801 - One of the First
Introduced in 1978, the 6801 was one of the first semiconductor products to claim the "computer on a chip" moniker. These magnified images show the entire chip (top), about three quarters of the 256 bytes of RAM (left) and only a few bytes at 400x.







They Don't Get Much Smaller
These 8-bit PIC brand microcontrollers from Microchip are used in myriad applications, cost less than 50 cents each and are much more powerful than the 6801. We're not great technology predictors. In 1949, Popular Mechanics speculated that future computers would only weigh "one and a half tons!"







A Microcontroller Behind Everything
Today's cars can have more than a hundred MCUs, each one controlling the simplest function from pressing a button to more complicated systems like the ones in the Honda above.
References in periodicals archive ?
* Using an 87C552 microcontroller instead of 80C552, due to the 8 KB EPROM for storing system programs, having in this mode all 64KB of external memory for data storage;
A Microchip customer for more than 10 years, Carrier today uses the broad line of embedded control solutions from Microchip, including microcontrollers, serial EEPROMs and analog devices.
This demand will lead to the expansion of the global automotive microcontrollers market at a CAGR of almost 1% during the forecast period.
Several key players are installing microcontrollers in electric vehicles to avoid pollution and to eliminate the noise coming out of the vehicle.
In given diagram output of AND gate (RD7) is connected to microcontroller.
Focus on development of advanced (low-power and ultra-low-power) IoT microcontrollers
Some microcontrollers have dedicated DACs for applications of audio output.
The PWM waveform lookup table programmed in the microcontroller will be an estimate of the original high resolution PWM waveform.
Pretty much everyone in our industry is familiar with the long evolution of microcontrollers. So familiar, in fact, that it's easy to miss changes in our industry and society, both positive and negative, that accompanied that evolution--just as we tend not to see daily changes in our own aging faces.
No decision has been made yet concerning the microcontroller chip operations, a spokesman for the Japanese company told Reuters.Country: JapanSector: ElectronicsTarget: Fujitsu's microcontroller chip businessBuyer: Spansion Inc Vendor: Fujitsu Ltd Type: DivestmentStatus: Speculation
An in-situ component immunity test bench [8] is introduced in this paper; it receives the output data by USART which is a normal module inside the microcontroller. The method could be used in the automotive field when the oscilloscope is not convenient to detect the output data of the microcontroller.
The company says this new version of Flowcode is designed to speed up the process of learning how to develop electronic systems, and also offers practising engineers a range of new features that make designing microcontroller based circuits easier and quicker.