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Keyboard EB014

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EB014 Keyboard

More information can be found here.

EB014 Keyboard

• Click EB014 KeyBoard for a datasheet
• This Keyboard input board provides you with 12 input buttons on an 8-bit port.
• This is done by alternately making the column lines high and then scanning the 4 row input lines.
• If one of the row inputs reads as high, you know which button was pushed.
• This is called a 'multiplexed input'.
• Flowcode provides the programmer with a hardware macro that takes care of this all.
• The keypad is best connected to Port B because this port has a Port interrupt on the lines RB4-RB7, exactly the same lines as the row connections.

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