Decade counter program vhdl

We will write the VHDL code for all the three types of synchronous counters: up, down, and up-down. First, we will take a look at their logic circuits. Then we will write the VHDL code, then test the code using testbenches.

Finally, we will synthesize the RTL schematic and the simulation waveforms. Synchronous means to be driven by the same clock.

The flip-flops in the synchronous counters are all driven by a single clock input. You can see the logic circuit of the 4-bit synchronous up-counter above. And four outputs since its a 4-bit counter. And in that case, it is also an input. Since we are using behavioral architecture, we will define the behavior of the circuit using if-elsif statements.

The process statement has the inputs in its sensitivity list. The main program is very simple and straightforward. We will use the infinite testbench type of testbench as we had discussed in our guide on writing a VHDL testbench. After coding the up-counter, we will implement the VHDL code for synchronous down counter using behavioral architecture. First, will understand its behavior. And then we will understand the syntax. For the full code, scroll down.

The 4-bit synchronous down counter counts in decrements of 1. The maximum count that it can countdown from is 16 i. The 4-bit down counter is very much similar to the circuit of the 4-bit up-counter. Today, f Verilog code for D Flip Flop. D Flip-Flop is a fundamental component in digital logic circuits. Verilog code for D Flip Flop is presented in this project. There are t Verilog code for counter with testbench. In this project, Verilog code for counters with testbench will be presented including up counter, down counter, up-down counter, and r It normally executes logic and arithmetic op This FPGA project is aimed to show in details how to process an image using Verilog from reading an input bitmap image.

Notify me of new posts via email. Decade Counter A Decade synchronous counter can be built using synchronous binary counters to produce a count sequence from 0 to 9. Share this: Twitter Facebook. Like this: Like Loading Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:.

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