Jan 24, 2015 #1 K ketanrathod Junior Member level 3 Joined Nov 28, 2014 Messages 26 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 179 I am interfacing keyapd with ATmega32. But I have only 4 pins of PORT A are remaining. How I should I interface it . Please suggest me the code.
I am interfacing keyapd with ATmega32. But I have only 4 pins of PORT A are remaining. How I should I interface it . Please suggest me the code.
Jan 24, 2015 #2 D d3javu Member level 2 Joined Oct 15, 2010 Messages 42 Helped 9 Reputation 18 Reaction score 9 Trophy points 1,288 Activity points 1,526 You need an encoder to reduce the pin requirement. This encoder is one example of reducing the pin counts. You have to find one that suitable for your design. All the best.
You need an encoder to reduce the pin requirement. This encoder is one example of reducing the pin counts. You have to find one that suitable for your design. All the best.