Dept. of Electrical and Computer Eng., NCTU 1

Lab 11. Mod 6 Counter

Presenter: Chun-Hsien KoContributors:

Chung-Ting Jiang and Lin-Kai Chiu

Logic Design Lab 11. Mod 6 Counter Chun-Hsien Ko

Dept. of Electrical and Computer Eng., NCTU 2

Combinational Logic vs. Sequential Logic States of Sequential Logic

Mod 6 Counter State Machine of Mod 6 Counter Asynchronous Counter Circuit Design of Mod 6 Counter

LAB 11: Mod 6 Counter Bonus: Mod 6 Up/Down Counter

Logic Design Lab 11. Mod 6 Counter Chun-Hsien Ko

Combinational Logic vs. Sequential Logic

Dept. of Electrical and Computer Eng., NCTU 3

𝑂𝑢𝑡=𝐹 ( 𝐼𝑛) 𝑂𝑢𝑡=𝐹 ( 𝐼𝑛 ,𝑝𝑟𝑒𝑣𝑖𝑜𝑢𝑠 𝐼𝑛)

Logic Design Lab 11. Mod 6 Counter Chun-Hsien Ko

Sequential Logic

Dept. of Electrical and Computer Eng., NCTU 4

q depend on the number of states

Logic Design Lab 11. Mod 6 Counter Chun-Hsien Ko

State Machine of Mod 6 Counter How to reduce the 3-bit Counter to Mod 6 Counter?

Dept. of Electrical and Computer Eng., NCTU 5

Logic Design Lab 11. Mod 6 Counter Chun-Hsien Ko

State Machine of Mod 6 Counter Clear the State when current State is equal to (110)

Dept. of Electrical and Computer Eng., NCTU 6

Clear !!

Logic Design Lab 11. Mod 6 Counter Chun-Hsien Ko

Falling-edge Trigger JK Flip-Flop

Dept. of Electrical and Computer Eng., NCTU 7

Asynchronous Clear

Logic Design Lab 11. Mod 6 Counter Chun-Hsien Ko

Circuit Design of Mod 6 Counter

Dept. of Electrical and Computer Eng., NCTU 8

State=(110)

Logic Design Lab 11. Mod 6 Counter Chun-Hsien Ko

LAB 11: Implement a Mod 6 Counter IC and devices：

7473 x 2 7432 x 1 LED x 3

Clock Source: NC555 x1 470K Resistor x2 1 uF Capacitance x1

Bonus: Mod 6 Up/Down Counter Design the circuit in your report Also implement the circuit

Dept. of Electrical and Computer Eng., NCTU 9