Basically 8051 controller is Mask‚ programmable‚ means it will‚ programmed‚ at the time of manufacturing and will not‚ programmed‚ again, there is a derivative of 8051 microcontroller, 89c51‚ micro controller‚ which is‚ re-programmable. This device also have Timer, Serial Port interface and Interrupt controlling you can use these according to your need.
Click here to download the full size of the above Circuit.
VCC and GND of AT89C51 is not shown in the above circuit diagram. VCC should be connected to +5 and GND should be connected to Ground of the power supply. AT89C51 needs an oscillator for its clock generation, so we should connect external oscillator. Two 22pF capacitors are used to stabilize the operation of the‚ Crystal Oscillator. ‚EA should be strapped to VCC for internal programG‚executions. AT89C51 has no internal Power On Reset, so we have to do it externally through the RST pin using Capacitor and Resistor. When the power is switched ON, voltage across capacitor will be zero, thus voltageG‚acrossG‚resistor will be 5V and reset occurs. As theG‚capacitorG‚charges voltage across theG‚resistorG‚gradually reduces to zero. The circuitG‚may beG‚simulated using Proteus. If you haven`t yet started with Proteus, please go through this tutorial. You can buy Proteus fromG‚ Labcenter Electronics. hi there. I have a atmel programming kit for AT89C51. This has the interface CP2102 USB to UART master controller to communicate with the computer. I have no problem with IDE. Now I want to fuse the hex file in to my controller. I searched in the net and found driver for my programmer interface (USB to UART). So the interface communicaiton has no problem. Now I need a utility to fuse the program in to MC. Could you please suggest me a good utility with download url to fuse programs in my AT89C51 It will be so helpful to me. Thanks...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
characters left: