Chapter 9 Pulse-Width Modulator (S12PWM8B8CV2)
S12ZVHY/S12ZVHL Family Reference Manual Rev. 1.05
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Freescale Semiconductor
In freeze mode there is a software programmable option to disable the input clock to the prescaler. This is
useful for emulation.
Wait:
The prescaler keeps on running, unless PSWAI in PWMCTL is set to 1.
Freeze:
The prescaler keeps on running, unless PFRZ in PWMCTL is set to 1.
9.1.3
Block Diagram
shows the block diagram for the 8-bit up to 8-channel scalable PWM block.
Figure 9-1. Scalable PWM Block Diagram
9.2
External Signal Description
The scalable PWM module has a selected number of external pins. Refer to device specification for exact
number.
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
Maximum possible channels, scalable in pairs from PWM0 to PWM7.