Справочник Пользователя для Freescale Semiconductor Demonstration Board for Freescale MC9S12XHY256 Microcontroller DEMO9S12XHY256 DEMO9S12XHY256
Модели
DEMO9S12XHY256
Pulse-Width Modulator (S12PWM8B8CV1)
MC9S12XHY-Family Reference Manual, Rev. 1.04
422
Freescale Semiconductor
In freeze mode there is a software programmable option to disable the input clock to the prescaler. This is
useful for emulation.
useful for emulation.
13.1.3
Block Diagram
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.
feature.
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