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MC9S12VR-Family - Data Sheet - Freescale Semiconductor

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Pulse-Width Modulator (S12PWM8B8CV2)<br />

9.1.3 Block Diagram<br />

Figure 9-1 shows the block diagram for the 8-bit up to 8-channel scalable PWM block.<br />

Bus Clock<br />

PWM8B8C<br />

Clock Select<br />

Control<br />

Enable<br />

Polarity<br />

Alignment<br />

PWM Clock<br />

9.2 External Signal Description<br />

PWM Channels<br />

Figure 9-1. Scalable PWM Block Diagram<br />

The scalable PWM module has a selected number of external pins. Refer to device specification for exact<br />

number.<br />

9.2.1 PWM7 - PWM0 — PWM Channel 7 - 0<br />

Those pins serve as waveform output of PWM channel 7 - 0.<br />

Channel 7<br />

Period and Duty Counter<br />

Channel 6<br />

Period and Duty Counter<br />

Channel 5<br />

Period and Duty Counter<br />

Channel 4<br />

Period and Duty Counter<br />

Channel 3<br />

Period and Duty Counter<br />

Channel 2<br />

Period and Duty Counter<br />

Channel 1<br />

Period and Duty Counter<br />

Channel 0<br />

Period and Duty Counter<br />

<strong>MC9S12VR</strong> <strong>Family</strong> Reference Manual, Rev. 2.8<br />

276 <strong>Freescale</strong> <strong>Semiconductor</strong><br />

PWM7<br />

PWM6<br />

PWM5<br />

PWM4<br />

PWM3<br />

PWM2<br />

PWM1<br />

PWM0<br />

Maximum possible channels, scalable in pairs from PWM0 to PWM7.

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