Localized Device Control Input/Output

• Digital input: decoded like reading a register

• Digital output: write a register

• Analog input: measures a time constant

• • • Reset analog accumulation by write
    • Threshold crossing detected by read
    • Timing is done by a software counter

• Analog output: Pulse Width Modulation

• • • PWM output is really a digital output
    • Filter in analog circuit (if needed)