August 29, 2020

Find the latest PIC16F84A Microcontroller based Projects for Engineering students. 20+ PIC16F84A Projects topics with basic explanation. Microchip PIC16F84A microcontroller projects with circuit schematics and C PIC C compiler. Perhaps the most popular microcontroller ever is the PIC16F This site covers a number of projects based around this and similar.

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Become a subscriber Free Join 29, other subscribers to receive subscriber sale discounts and other free resources. Don’t worry — youre-mail address is totally secure. I promise to use it only to send you MicroZine. The PIC16F84 is a the most well known and most well used of all the PIC microcontrollers – it is used in numerous projects that you can find across the web.

Even though the 16F84 is getting on a bit, it is one of the most popular of the PIC microcontrollers and there are hundreds of circuits for it on the web but it does have limited memory, RAM and peripherals See diagram below. As of microchip are recommending that you use 16F84A instead of 16F84 with the only difference being that the A-version runs at 20MHz using a 20MHz crystal the non-A version runs at 10MHz crystal speed only. It is an 8 bit mid-range microcontroller having words of program memory, 68 bytes of RAM and 64 bytes of long term EEPROM storage and a single peripheral – an 8 bit timer – Timer0.

The real innovation of this device is that it can be re-programmed using ICSP in circuit – and the interesting thing is that this same scheme is used in all PIC devices proving that the design was and is good from the start.


The same can be said of Timer0 16f8 is also used throughout the PIC family ranges, although in 18F devices you can set a control bit that turns it into a 16 bit timer. Of course the 8-bit implementation in that device is still the same as the 16F84!

My PIC Projects

Warning the 16F84 is obsolete. In fact the 16F88 is a good PIC micro to progress onto after starting out on the 16F84 as the 16F88 is backwards compatible with the 16F84 -it has the same number of pins and same pin functions.

Some pins are more flexible but still backwards compatible with the 16F You’ll also need to download the C compiler for source code re-compilation if you want the re-compile code. The compiler is free for the small amounts of code used here. Jump to Circuit diagram.

My GPS LCD Display Project using PIC16F84

Before you start have a look at the following for background info: The 16F84 is packaged in an 18 pin chip and although it has limited peripherals it is usable in many circuits. Here are its features and a short comparison. The following bubble diagram shows the major peripherals and features of the 16F84 in a visual format: You can compare this chip using bubble diagrams to some others used on this site by clicking here. If you don’t have a bench power supply then you can use this circuit. All you will need is a power supply block with dc output greater than 8V and no more than 35V or a 9V battery to plug into CN1.

pic16f84 projects

It is best to use the 5V power supply circuit as it not only correctly regulates the dc voltage but it protects your PIC chip. The input voltage can go up to 35V without damaging the although the power dissipated by the will increase for higher input voltages i.


The LED current limiter resistor 1k is not ideal it just lets you see the led you don’t need maximum current to see it – Replace the 1k with a if you want brighter output.

The following code flashes the LED. Download the source file and hex files here.

Pic16f84 Projects – Electronics Projects Circuits

Setting a bit in the TRIS register to zero sets the pin direction to an output. This gives you the prjects for using the PIC16F84 so that you can move on to more complex projects. Comments Have your say about what you just read!

Leave me a comment in the box below. Three different ways to debounce input push switches with one amazing method prouects you can’t miss.

How to use the BMP for weather pressure measurement or altitude change detection. How to use fixed point maths to save microcontroller memory by avoiding use of the floating point library. Since it is an older device you can projcts program it using a Low Voltage Programmer but LVP is only for very specialised usage – I just turn it off setting in the control bits that configure a PIC chip you must use a High Volt Programmer e. I find here many useful projects and tips.

Very useful, uncovered, honest and clear. Thanks so much for your time and works.

No reprodction without permission. Starter circuit and software.