Pulse-Width Modulator (S12PWM8B8CV1)
MC9S12XHY-Family Reference Manual, Rev. 1.01
424
Freescale Semiconductor
13.1.3
Block Diagram
Figure 13-1
shows the block diagram for the 8-bit 8-channel PWM block.
Figure 13-1. PWM Block Diagram
13.2
External Signal Description
The PWM module has a total of 8 external pins.
13.2.1
PWM7 — PWM Channel 7
This pin serves as waveform output of PWM channel 7 and as an input for the emergency shutdown
feature.
13.2.2
PWM6 — PWM Channel 6
This pin serves as waveform output of PWM channel 6.
Period and Duty
Counter
Channel 6
Clock Select
PWM Clock
Period and Duty
Counter
Channel 5
Period and Duty
Counter
Channel 4
Period and Duty
Counter
Channel 3
Period and Duty
Counter
Channel 2
Period and Duty
Counter
Channel 1
Alignment
Polarity
Control
PWM8B8C
PWM6
PWM5
PWM4
PWM3
PWM2
PWM1
Enable
PWM Channels
Period and Duty
Counter
Channel 7
Period and Duty
Counter
Channel 0
PWM0
PWM7
Bus Clock
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