Programming 8051

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How to interfacing of L293D with 8051 (89c51)


Description In this tutorial we understand how to interfacing l293d with 8051 micro controller. The l293d is motor driver IC which drive the DC gear motor through the 8051 micro controller. The interfacing of L293D can be understand with the help of any application, so here we understand with the help of motor driver program. Program to interfacing of L293D with 8051

How to interfacing of L293D with 8051 (89c51)2020-01-06T16:58:36+00:00

8051 Pin Diagram


VCC - 5V Supply Port 0(p0.0 to p 0.7): It is eight bit bidirectional I/O port. During external memory access, it functions as multiplexed data and law order address bus AD0-AD7. Port 1(P1.0 to P 1.7): It is eight bit bidirectional I/O port, when logic 1 then it works as Input mode. Port 2(P2.0 to P2.7): It is eight bit bidirectional I/O port. During external memory access it works as higher order address bus.(A8-A15). Port 3 (P 3.0 [...]

8051 Pin Diagram2017-05-27T14:05:35+00:00

8051 Microcontroller Architecture (Block Diagram)


Block Diagram of 8051 Microcontroller Microcontroller has built in RAM for internal processing and it has two bus Data bus Address bus It has 8 bit processing unit and 8 bit and 8 bit and 8 bit accumulator, and have 8 bit and 16 bit registers. CPU It monitors controls all operations that are performed in microcontroller, its function is to read program written in ROM memory and do the executed task. Interrupts Interrupts are [...]

8051 Microcontroller Architecture (Block Diagram)2017-05-27T13:58:54+00:00

8051 LED Interfacing with Delay


In this tutorial we learn about how the 8051 LED interfacing with delay generation is done . Time delay generation in 8051 architecture is done by the two methods. Using a simple loop logic Using internal timer register Programming Example 1 1.  Write an embedded C program to continuous flashing the LED connected to port 2. Algorithm: Include the preprocessor directive <reg51.h> Make a delay function with void type and an integer type argument ‘a’. Declare variable [...]

8051 LED Interfacing with Delay2017-04-18T16:56:26+00:00

8051 Based DTMF Control AC Appliances


DTMF  dual tone is multiple frequency tone which is generated by  phone when the key is pressed. This tone can be used at various applications to control the hardware. DTMF based home appliances is the one of the application of them. When the two phones are connected for the call at that time when the keys is pressed then DTMF tone is also generated. So in this method we can control it from the anywhere [...]

8051 Based DTMF Control AC Appliances2017-04-18T16:47:30+00:00

8051 Microcontroller


Introduction 8051 has internally Harvard architecture developed by Intel in 1970s for use in embedded systems. It has basic features of microprocessors with internal ROM, RAM, input output ports inbuilt on a single chip. Microcontroller is a device in which entire computer manufactured on a single chip. Microcontroller has 3 basic sizes: Standard, short, extended Sort and extended chips are available in DIP (dual-in-line package), but extended 8051 models have differ form factor, and are [...]

8051 Microcontroller2017-04-13T09:50:19+00:00

LED Interfacing


In this tutorial we understand the interfacing of LED with 8051 microcontroller. Here is the first pattern to glow all LED’s connected with output  AT89C51.  Circuit  Principle The main principle of circuit is to interface LED’s to the 8051 microcontroller and performing different patterns with LED’s. Here first i have introduce a very basic operation of taking an output of AT89C51 microcontroller and interfacing it with LED’s . AT89C51 is a microcontroller which belongs to [...]

LED Interfacing2017-02-17T14:06:08+00:00

Types of Diode


What is a diode: - When P type semiconductor and N type semiconductor connected with each other than new formed device is known as PN diode which formally known a diode. Diode is a switch, which consist two terminal electronic components that’s why it is called diode. It has asymmetric transfer characteristic with low resistance to current flow in one direction, and high (ideally infinite) resistance in the other direction. A semiconductor material with a [...]

Types of Diode2015-02-10T16:15:07+00:00

Embedded C Programming


Basic Structure of 8051 Programs This post helpful to understand first basic Program writing in Embedded C programing in various IDE platform and this one can be implemented in the keil C IDE compiler Header file #include<reg51.h> Main function void main () { Logic to run program infinite times while (1) { Statement(s)  } }

Embedded C Programming2013-11-07T13:34:39+00:00

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