We use cookies to give you the best experience possible. By continuing we’ll assume you’re on board with our cookie policy

Microcontrollers Features Essay Sample

  • Pages: 5
  • Word count: 1,353
  • Rewriting Possibility: 99% (excellent)
  • Category: applications control

Get Full Essay

Get access to this section to get all help you need with your essay and educational issues.

Get Access

Introduction of TOPIC

This is an 8-bit chip microcontroller that has been improved from the 87C51FA. Its features make it a powerful microcontroller, which is ideal for applications such as pulse width modulation, high-speed I/O and up/down counting capabilities.

The suitable application for 87C51FB microcontroller would be windshield wiper system, because of its adequate program memory and RAM. It has on board Program Array Counter (PCA), which enables it to capture input and output pulse width modulation. The input capture feature is needed in order for pulse width measurement to work with capacitive sensors (used to detect rain on the windshield). The 87C51FB offers a controlled variable speed of the wipers.

The Features:

> 12 MHz Operation

> Three 16-bit Timer/Counters

> 7 Interrupt Sources, with 4-level interrupt priority

> Programmable Counter Array (PCA)

Input Capture/Compare

Pulse Width Modulator

High Speed Output

> 32K bytes EPROM, 256 bytes RAM

> 32 Programmable Input/Output Lines (Four 8-bit I/O Ports)

87LPC767 microcontroller

The 87LPC767 is a 20-pin single-chip microcontroller; it is intended for low system cost applications, with a low pin count, that demand high integration. This microcontroller has its relations within the Philips low-pin count family. The 87LPC767 is ideal for applications that contain sensors

The applications best suited for 87LPC767 microcontroller is a remote control transmitter unit.

The Features:

> 8 keypad interrupt inputs.

> Programmable port output configuration options: quasibidirectional, open drain, push-pull, input only.

> Two 16-bit counter/timers. Each timer can be configured to toggle a port output upon timer overflow.

> LED drive capability(20 mA) on all port pins.

> Watchdog timer with separate on-chip oscillator, requiring no external components

68HC11 microcontroller

The 68HC11 is a microcontroller made by Motorola, it’s powerful with an 8-bit data, 16-bit address and an instruction set, Timers, RAM EEPROM/OTPROM digital I/O, A/D converter PWM generator, and synchronous and asynchronous communication channels (RS232 and SPI) are built into the 68HC11 microcontroller.

The application best suited for 68HC11 microcontroller is an emergency communicator system application because it

– Records a set of personalised emergency message

s. – Dial customised telephone number(s) when triggered by

Sorry, but full essay samples are available only for registered users

Choose a Membership Plan
a pushbutton, monitor, sensors etc.

– Monitor call status and delivers recorded massages.

The Features:

> Power saving STOP and WAIT modes

> Synchronous Serial Peripheral Interface (SPI)

> 8-channel 8-bit Analog-to-digital (A/D) converter



> Clock monitor

> Parallel input/output

> Highest priority interrupt

> 16-bit Timer system

Features applied to the emergency communicator system


Low power – operates on battery backup

Noise immunity – operates in surroundings with telephone line and (possibly) radio transmitters


Calibration table -look up values for dial tones, ring back signals, busy signals etc.

User parameters – a list of telephone numbers to call in a case of different emergencies

System configuration – the locality of the emergency message “phrases” in memory

> Analog-to-digital converter

Convert voice input to digital for recording message phrases

> Serial peripheral interface

Transmission of serial ASCII data to an LCD display unit for the user interface

> Timer subsystem

Input capture functions in order to measure the signals on the telephone line to supervise the call status.

Real-time interrupt will display the time since call request

> Parallel input/output

Manage input and output (simple mode)

External memory interface

> STOP and WAIT modes

Minimise power usage when the unit is idle

> Clock monitor

Whilst the system is in the WAIT mode, the clock monitor will confirm that the correct operations is taking place, and if any errors are detected it can reset the system.

> Highest priority interrupt

IRQ is elevated to the highest priority as this shows a request for an emergency message

80251 microcontrollers

This is first 8051 microcontroller families, and still is one of the most commonly used, these are relatively cheap, encompass decent tools, and also presents a good possibility of upgrading to larger and more capable parts.

Intel is the first company that is responsible for the 8051 family, other companies has taken up the idea and largely produces these microcontrollers, such as Atmel, Dallas Semiconductors, and Philips

The suitable application for 80251 microcontrollers would be a cellular phone application. Because of the features it has which is similar to a cellular phone:

> UART (Universal Asynchronous Receiver Transmitter)

To transfer data, to and from the serial port

> Watchdog Timer

To reset processor after a specified interval when activated, and provides a means of gracefully recovering from system problems

> Interrupt Handler

To provide a means of interrupt polling and handle real-time interrupt that may occur.

> Power Monitoring and Management

This mode is very useful in terms of reducing power consumption when the processor is idle.

> SPI (Serial Protocol Interface)

This is a protocol for wireless connectivity

> Wire (Synchronous Serial Interface)

for interfacing to microcontroller

The Features:

> UART (Universal Asynchronous Receiver Transmitter)

> Watchdog Timer

> SPI (Serial Protocol Interface)

> Interrupt handler

> Wire (Synchronous Serial Interface)

> Power Monitoring and Management










We can write a custom essay on

Microcontrollers Features Essay Sample ...
According to Your Specific Requirements.

Order an essay

You May Also Find These Documents Helpful

Analysis the RFID application use in ZARA

1. Introduction ZARA, a chain of apparel brands owned by the Spanish company Inditex Group, Inditex is Spain's number one apparel retailer with more than 2,000 locations in 52 countries. Inditex Group also owns such as Massimo Dutti, Pull and Bear, Uterque, Stradivarius and Bershka. ZARA is one of the most successful, is considered one of Europe's most research value of the brand. Headquartered in A Coruña, Spain, ZARA opened its first branch in 1975. Today, Inditex Group is probably the fastest-growing retailer in the world more than 70 countries worldwide, more than 2213 stores are ZARA's brands Branch and generated more than 15 billion sales in 2016 worldwide. The purpose of this research to analysis the following Analyze the function of RFID How RFID works Advantage and disadvantage in supply chain and application use in ZARA 2. Literature Review 2.1 What is RFID RFID stands for Radio Frequency Identification...

Producing the Leaflet

I used Microsoft Publisher to produce my Leaflet as this program hosted a variety of styles and different colour options, making the Leaflet more attractive. Choosing the design and format Firstly I opened up a new file and chose the style 'axis' under the subheading catalog, as shown below: This gave me the template of the leaflet. All I had to do know was to add pictures and information into the Leaflet and give product descriptions, under the template for catalogs it came up with a default number of pages which was 8; this entitled me to have more information to be placed onto the leaflet than intended. Before it fully came up with the template Microsoft Publisher opened up a new window telling me to input my company details, once I had done this it had automatically placed the details onto the leaflet as shown in the screen capture...

Web or Mobile App Paper

The topic of discussion for this paper is going to be on the mobile app “Gas Buddy” for Android. Gas Buddy is one of the most practical apps that I use. I use it on average only about once a week, but it can potentially save me hundreds of dollars a year in gasoline charges if I use it effectively. The way Gas buddy works is that it allows it’s users to locate the nearest gas stations to them or the gas stations in a location they will be in later in the day. This is enabled by utilizing the smart phone’s location services or GPS. In addition to that, Gas buddy will also list the prices of gas at each station for each fuel grade. Since Gas stations vary their prices based on their competition, this app really empowers the consumer by allowing them to see the prices of...

Popular Essays


Emma Taylor


Hi there!
Would you like to get such a paper?
How about getting a customized one?