使用eMIOS模块为SPC560D40L3 MCU生成PWM

你好，

我正在使用eMIOS模块为SPC560D40L3 MCU生成PWM。我正在使用SPCStudio项目的默认配置，而不更改FMPLL0和时钟设置。我的目标使用8MHz外部XTAL。有了这个，我试图生成一个频率范围从15Hz到600Hz的PWM。我观察到PWM通道没有在输出上给出精确的频率PWM。在较低值时差值较小，但随着频率上升（在600Hz时为125Hz）继续增加。为什么eMIOS模块有这种行为？是否需要任何其他配置？

提前致谢。
麦克风。

以上来自于谷歌翻译

以下为原文

Hello,

I am using eMIOS module for SPC560D40L3 MCU for generating PWM. I am using default configuration for the SPCStudio project with no change to FMPLL0 and Clocks settings. My target uses 8MHz external XTAL. With this, I am trying to generate a PWM for frequency ranging from 15Hz to 600Hz. I observed that the PWM channel is not giving exact frequency PWM on the output. The difference is small at lower values but goes on increasing as the frequency rises (@ 125Hz at 600Hz). Why is this behavior for eMIOS module? Is any additional configuration required?

Thanks in advance.
Mike.