AIM:
To implement T flipflop using verilog and validating their functionality using their functional tables
SOFTWARE REQUIRED:
Quartus prime
THEORY
T Flip-Flop
T flip-flop is the simplified version of JK flip-flop. It is obtained by connecting the same input ‘T’ to both inputs of JK flip-flop. It operates with only positive clock transitions or negative clock transitions. The circuit diagram of T flip-flop is shown in the following figure.
This circuit has single input T and two outputs Qtt & Qtt’. The operation of T flip-flop is same as that of JK flip-flop. Here, we considered the inputs of JK flip-flop as J = T and K = T in order to utilize the modified JK flip-flop for 2 combinations of inputs. So, we eliminated the other two combinations of J & K, for which those two values are complement to each other in T flip-flop. The following table shows the state table of T flip-flop.
Here, Qtt & Qt+1t+1 are present state & next state respectively. So, T flip-flop can be used for one of these two functions such as Hold, & Complement of present state based on the input conditions, when positive transition of clock signal is applied. The following table shows the characteristic table of T flip-flop. Inputs Present State Next State
From the above characteristic table, we can directly write the next state equation as Q(t+1)=T′Q(t)+TQ(t)′ ⇒Q(t+1)=T⊕Q(t)
Procedure Step 2: Write code to implement SR flipflop using verilog and validating their functionality using their functional tables.
Step 3: Run compilation to check for errors.
Step 4: Open waveform output and load input values.
Step 5: Run simulation to get the output.
Step 6: Open in RTL viewers to get RTL diagram output
PROGRAM
Developed by : MOHAMED AAKIF ASRAR S
Regno:212223240088
module T_FLIPFLOP( input clk, rst_n, input t,
output reg q,
output q_bar
);
always@(posedge clk)
begin
if(!rst_n)
q<=0;
else
if(t)
q<=~q;
else
q<=q;
end
assign q_bar = ~q;
endmodule
RTL LOGIC FOR FLIPFLOPS
TIMING DIGRAMS FOR FLIP FLOPS
RESULTS
T flipflop using verilog and validating their functionality using their functional tables completed