Circuito FSM con Flip-Flop D

0:49

Aquí tienes una propuesta para un circuito FSM de 4 estados que se puede simular en Falstad. La idea es usar dos flip‑flops tipo D para generar un contador binario de 2 bits (con 4 estados) y condicionar la salida de un LED en función del estado. Por ejemplo, se puede encender el LED únicamente en el estado “10”. A continuación, se describe el circuito:

Flip‑flops y lógica de “siguiente estado”:
- Usa dos flip‑flops D, que llamaremos [DFF1] y [DFF2].
- Conecta ambos flip‑flops al mismo reloj, alimentado por un botón (con el circuito de “debouncing” –a tu elección– y la resistencia pull‑up necesaria).
- Implementa la función de contador binario:
  - Para [DFF1] (bit menos significativo): conecta la entrada D a NOT(Q0) (la salida de [DFF1] invertida).
  - Para [DFF2] (bit más significativo): establece la entrada D como la salida de una compuerta XOR con las entradas Q1 (de [DFF2]) y Q0 (de [DFF1]).
- De este modo, en cada pulso de reloj los estados evolucionan en la siguiente secuencia:
  
  Table
  Estado Q1 Q0 LED (propuesta)
  0 0 0 Apagado
  1 0 1 Apagado
  2 1 0 Encendido
  3 1 1 Apagado
Condicionamiento del LED (Salida):
- Para que el LED se encienda solo en el estado “10”, puedes usar una compuerta AND que tenga como entradas la salida Q1 y la señal NOT(Q0).
- La salida de esta AND controla el LED (con la resistencia limitadora en serie).
Interfaz del botón:
- El botón se conecta al reloj de ambos flip‑flops. Asegúrate de incluir un circuito de “debouncing” (por ejemplo, con RC o usando un Schmitt trigger) para evitar rebotes en la simulación en Falstad.
Implementación en Falstad:
- Abre el simulador de Falstad (Modo “Digital” o “Sequential Logic”).
- Replica la conexión de dos flip‑flops D con las funciones descritas:
  - [DFF1]: D = NOT(Q0)
  - [DFF2]: D = XOR(Q1, Q0)
- Agrega una compuerta AND para la salida del LED: entradas: Q1 y NOT(Q0).
- Conecta el botón de reloj a ambos flip‑flops y añade la fuente de alimentación adecuada.

Este circuito realiza la función de FSM de 4 estados; al pulsar el botón, el sistema avanza en la secuencia y el LED se encenderá únicamente en el estado “10”. Puedes copiar esta descripción y recrearla en Falstad para simular y ajustar el comportamiento según tus necesidades.

¿Deseas detalles adicionales o alguna variación en la función de salida del LED?

Agregar D Flip-Flops

Circuito anti-rebote

Añadir compuerta AND y LED

393 days

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Project Name

Tasteless Purple Pip boy

Description

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Properties

Properties describe core aspects of the project.

Pricing & Availability

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Controls

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Schematic

Estado	Q1	Q0	LED (propuesta)
0	0	0	Apagado
1	0	1	Apagado
2	1	0	Encendido
3	1	1	Apagado