S9S12XS256J0CAL Datasheet, PDF (366/738 Pages) Freescale Semiconductor, Inc – Microcontrollers

Pulse-Width Modulator (S12PWM8B8CV1)
13.1.2 Modes of Operation
There is a software programmable option for low power consumption in wait mode that disables the input
clock to the prescaler.
In freeze mode there is a software programmable option to disable the input clock to the prescaler. This is
useful for emulation.
13.1.3 Block Diagram
Figure 13-1 shows the block diagram for the 8-bit 8-channel PWM block.
Bus Clock
PWM8B8C
PWM Channels
Channel 7
Period and Duty Counter
Clock Select ^{PWM Clock}
Control
Channel 6
Period and Duty Counter
Channel 5
Period and Duty Counter
Channel 4
Period and Duty Counter
Enable
Polarity
Alignment
Channel 3
Period and Duty Counter
Channel 2
Period and Duty Counter
Channel 1
Period and Duty Counter
Channel 0
Period and Duty Counter
Figure 13-1. PWM Block Diagram
13.2 External Signal Description
The PWM module has a total of 8 external pins.
PWM7
PWM6
PWM5
PWM4
PWM3
PWM2
PWM1
PWM0
S12XS Family Reference Manual, Rev. 1.13
366
Freescale Semiconductor