Frankly, this ik3oil 16f84 pic frequency counter is a marvelous frequency counter, as it not only cheap, but can perform a better result than other frequency counter did. Microchip, alldatasheet, datasheet, datasheet search site for. In addition, with incircuitserial programming, the designer can update code without the device being removed from the end. For example, for locations 20h, 420h, 820h, c20h, 1020h, 1420h, 1820h, and 1c20h will be. Any schematics or ideas for frequency counter using pic16f84 and multiplexed seven segment display. The brain of the unit is a pic 16f84 microcontroller. So far, i have only played around with the pic16f84 pic chip, with exception to using a pic16f876 with the hamhud. Our webiste has thousands of circuits, projects and other information you that will find interesting. There are four device types as indicated in the device number. Eeprom memory programming specification, pic16c84 datasheet, pic16c84 circuit, pic16c84 data sheet. This program uses an 8 bit dac along with a 16f84 pic microcontroller to generate a keyed sine wave.
This is a simple frequency counter based on a microcontroller pic16f84. All you need is a pic microcontroller or any microcontroller that has a high speed timer input module and a 2 line lcd display the standard hd44780 one is the one used here. Mplab x integrated development environment ide mplabxide mplab x integrated development environment ide is an expandable, highly configurable software program that incorporates powerful tools to help you discover, configure, develop, debug and qualify embedded designs for most of microchips microcontrollers, microprocessors and digital signal controllers. It needs only a little amplifier stage that grow input signal from 200300 mv p. Ad9850 cmos, 125 mhz complete dds synthesizer data sheet. The ccp1 pin is determined by the ccpmx bit in configuration word 1 register. Using temperaturecompensated voltage controlled crystal oscillator 2. I have found the most documentation is on the 16f84. This frequency counter contains only a few components. Le pic 16f628 lessentiel diablotronic alexandre galode.
Pic 16f84 et prediviseur jusqua 50 mhz forum futura sciences. The mcounter, a pic based programmable frequency meter. The 64 bytes of data eeprom memory have the address range 0h3fh. Over the years its been ported to different pics until eventually it was ported to the ubiquitous 16f84. I have also found the most homebrew programmers for this pic. The separate instruction and data buses of the harvard architecture allow a 14bit wide instruction word with the separate 8bit wide data. These devices have flash program memory and operate. A pic frequency counter operating up to about 50 mhz. The other main attractive feature is the use of a single transistor as the input amplifier, which will give a sensitivity of less. This is a port by peter cousens to the pic 16f84 of the 50mhz frequency counter kit originally available from weeder technologies. Frequency counter using pic16c5x 1, where you may find a simple software wich implements a frequency counter using a pic microcontroller.
Pic16f84 datasheet, pic16f84 circuit, pic16f84 data sheet. A frequency counter is a useful addition to an engineers toolbox and you can create the design described on this page for free. Information contained in this publication regarding device applications and the like is intended through suggestion only. More details on the eeprom memory can be found in section 3. The basic idea comes fromthe an592 microchip application note. How do i modulate pwm frequency in realtime with a microchip dspic. The input signal can be a sine, a square or a triangle waveform. These devices have flash program memory and operate over the standard voltage range. Whilst building my frequency standard i found that i needed a frequency counter that i could permanently add to the project. Transverter 6cm f1opa 936mhzmultiplicateurtransverter format autocad. This is necessary to let ra4 pin 3 of 16f84 to commute. The 16f84 uses an rc clock which can be varied with a suitable potentiometer to allow a variable frequency control for the sine wave output.
The marvelous ik3oil 16f84 pic frequency counter embedds. This is a 4 digit decimal counter which can operate as a free running counter or in count and hold mode with manual reset. Pic microcontrollers, for beginners too online, author. Pic volt ampere meter volt ampere meter measures voltage of 070v or 0500v with 100mv resolution and current consumption 010a or more with 10ma resolution. Accessing a location above the physically implemented address will cause a wraparound.
Pic16f84a datasheet, pic16f84a pdf, pic16f84a data sheet, pic16f84a manual, pic16f84a pdf, pic16f84a, datenblatt, electronics pic16f84a, alldatasheet, free, datasheet. Frequency counter by pic16f628 pic microcontroller. The meter is a perfect addition to any power supply, battery chargers and other electronic projects where voltage and current must be monitored. In either mode the counter can be preset to count to a. The lcd display used is a state of the art, commonly available 16 characters dot matrix in one line unit. I read also a couple of interesting articles concerning this matter on qst 2, and so i was encouraged to go ahead with the project. In this project we are building a basic and low cost frequency counter circuit. The schematic diagram is very simple due pic work that make all function. Its maximum working frequency is around 30mhz, and have a 10hz resolution, and having low current consumption 15ma, and very simple assembly. Some of the various pics from microchip, 16f84, 16f627, 16f628, 16f876 and a 16f877. How can i write a program of frequency counter with pic16f84a that measure 1hz2mhz.
Frequencemetre avec microcontroller pic paulfjujo free. The weeder frequency counter pic 16f84 port by peter cousens. Since it uses a base pic that is easily programmable, and provides a usefull bit of bench test equipment at very low cost, it makes an ideal pic learning project. Jeu dinstructions demo 16f84 applications usuelles. The pic16f627a628a648a have enhanced core features, an eightlevel deep stack, and multiple internal and external interrupt sources. Looking around the net i found this little counter. Frequencemetre numerique a base du microcontroleur pic16f877a 1. This input is equiped with schmitt trigger and dont need a sharp squaring of input signal. Identification system at the back of this data sheet to specify the correct part number. Microchip, alldatasheet, datasheet, datasheet search site for electronic components and semiconductors, integrated circuits, diodes, triacs, and other semiconductors. It can measure from 16hz to 100hz signals with a maximum amplitude of 15v.
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