S912XHZ512F1VAG Datasheet, PDF (640/978 Pages) Freescale Semiconductor, Inc – Covers MC9S12XHZ384, MC9S12XHZ256

Chapter 18 Pulse-Width Modulator (S12PWM8B8CV1)
18.1.3 Block Diagram
Figure 18-1 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
PWM7
PWM6
PWM5
PWM4
PWM3
PWM2
PWM1
PWM0
Figure 18-1. PWM Block Diagram
18.2 External Signal Description
The PWM module has a total of 8 external pins.
18.2.1 PWM7 — PWM Channel 7
This pin serves as waveform output of PWM channel 7 and as an input for the emergency shutdown
feature.
18.2.2 PWM6 — PWM Channel 6
This pin serves as waveform output of PWM channel 6.
MC9S12XHZ512 Data Sheet, Rev. 1.06
640
Freescale Semiconductor