Timer 1 and 2 operation , PWM Principles

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Timer 1 and 2 operation , PWM Principles
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Timer 1 Operation
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Timer 1 Control Register
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Pulse Width Modulation (PWM)
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Generating PWM signals in Software
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Generating PWM using HW (1)
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Generating PWM using HW (2)
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Timer 2 Block diagram
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Timer 2 Control Register
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Capture, Compare, PWM (CCP)

• There are two CCP modules in the 16F877.
• Each has two eight bit registers.
• They modules work in conjunction with either
  timer1 or timer2.
• They have three main modes of operation.

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CCPxCON Register
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Capture Mode Operation
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Compare Operation Diagram
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PWM Operation Diagram
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PWM Output at Pin RC2
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PWM Calculations and Setup