i8

Keypad MCU

Diagram 0.1.3

On this sheet, in the MCUKP column, we have defined how the controls and indicators of the keypad will be driven by its microcontroller. The three AS1113 LED drivers will be connected through the SPI bus, while the ADP5589 keypad decoder will be connected through the I2C bus, also known as two-wire interface (TWI). Finally, two I/Os will be used for the jog wheel, for clockwise and counter-clockwise rotations. This will leave plenty of I/Os for future extensions, which I’m sure will be added at some points.

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