Microprocessors and Microcontrollers/Architecture of Micro controllers. Lecture Notes. Overview of 16 bit microcontroller. Features. • Byte Register File. An Intel P The Intel MCS is a family of microcontrollers (MCU) commonly used in embedded systems. Microcontrollers Overview – Learn Microprocessor in simple and easy steps starting from basic to advanced For example, Intel is a bit microcontroller.

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In other projects Wikimedia Commons. The Microcontroller Architecture Block Diagram functional units can be divided into two major sections:.

This page was last edited on 15 Augustat And the hardware reset is initiated to restart the microcontroller.

The performs most of the calculations in RALU. The chip is automatically reset when the Vdd deviates from the prescribed levels. The register ,direct and immediate addressing modes microcontrooller faster than the other addressing modes.

Intel MCS-96

When Timer 1 is over flown ,the interrupt bit is enabled or disabled Contd Any of the locations in the register file can be used for sources or destinations for most of the instructions. The 20 sources vector through 8 locations or interrupt vectors.

Two mainbuses A-bus and D-bus are used for inter-processor communication. Pin Diagram of By writing 1 to any line it can be used as an input and other lines can serve microcoontroller output lines. This is a byte wide register which is loaded sequentially with two bytes, and internally stores the value as a 80996.


T his line may also be driven by internal watchdog timer also.

Microcontroller |authorSTREAM

CS1 Russian-language sources ru Wikipedia articles needing clarification from March Articles containing Russian-language text Commons category link is on Wikidata. Contd … The chip has a baud rate generator which is independent of Timer 1 and Timer 2, so using the serial port does not take microconfroller any of the HSI, HSO or timer flexibility or functionality.

If it is to be serviced ,the CPU pushes the contents of the program counter on to the stack and and reloads it with the vector corresponding microocntroller the desired interrupt. From Wikipedia, the free encyclopedia. Your email address will not be published. Block Diagram of Programmable Interrupt Contr Individual interrupts can be enabled or disabled by setting or clearing the bits in the Interrupt mask register. The serial port is similar to that on the controller.

The main features of the MCS family include a large on-chip memory, Register-to-register architecturethree operand instructions, bus controller to allow 8 or 16 bit bus widths, and direct flat addressability of large blocks or more of registers.

Upon the completion of each conversion the converter can generate a conversion complete interrupt. Many of the instructions can also use bytes or words from anywhere in the 64K byte address space as operands.

Ford created the Ford Microelectronics facility in Colorado Springs in to propagate the EEC-IV family, develop other custom circuits for use in automobiles, and to explore the gallium arsenide integrated circuit market.

The family of microcontrollers are bithowever they do have some bit operations. Contd … These addressing modes increase the flexibility and overall execution speed of controller.


The HIS unit can store upto 8 entries Timer 1 values. The weak internal pullup is designed to be overridden by the external device which drives the line. Instruction and Data Format of Pin Diagram of Microprocessor. It has one synchronous and three asynchronous modes. There are 4 lines HIS.

Differences between the and the include the memory interface bus, the ‘s M-Bus being a ‘burst-mode’ bus requiring a tracking program counter in the memory devices. Minimum Mode Configuration of Contd … PowerPoint Presentation: These two modes are commonly used for interprocessor communication. They also take up a fair amount of silicon area which can be better used for other features.

The family is often referred to as the 8xC family, orthe most popular MCU in the family. In order to view it, please contact the author of the presentation.

Timers and Counters in Microcontroller. A-bus is a 8-bit address bus and D-bus is a bit data bus.

Microcontrollers – Overview

The serial port is configured in four modes. The microcontrpller between the two is, that in Mode 2 the serial port interrupt will not be activated unless the ninth data bit is a one; in Mode 3 the interrupt is activated whenever a byte is received. If this bit is set to 1 all the interrupts are enabled and disabled when reset to zero.