Neil Mula

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  • Basic LED light Sequence and Motor control using D-type Flip-Flop

  • Created: Jun 27, 2016

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Summary

An LED lighting sequence or any basic switching using flip-flops can be found in several electronic products. It has specific purpose like synchronization and it is almost the same with motor control that requires synchronization. This design make use of 16-bit edge-triggered D-type flip-flop that runs in 3.3V ± 0.3V at normal range while its extended range is 2.7V to 3.6V. It has also LED and motor driver circuit that demonstrate the D-type flip-flop capabilities.


This design circuit demonstrate a D-type flip-flop in LED light operation. Basically, as to what a D-type flip-flop operates, it captures a definite portion of the clock cycle in the input. An open switch signifies as a logic 0 or low state that results to the outputs assuming that the output pins are enabled. The “bus hold” retains the inputs last state whenever the input goes to a high impedance, and it prevents floating inputs and eliminates the need for pull-up resistors. If the switch is closed, it signifies logic 1 or high state in the input but the output still remains in its last state. The motor control circuit is provided by a power MOSFET driver chip that is used to drive a small motor. It is connected to the output of the second register in which the inputs are also determined by the two switches connected in the input pin. The pin 1/OE is the output enable pin of the registers while 1CLK and 2CLK are clocks required by the registers.


The design is applicable in telecommunications where data synchronization is very important. It is also applicable to industrial application like small scale motor control. It can be developed that can brings simplification of electronic products in operation.

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