减少ACMP功耗

减少ACMP功耗

安全功能技术

该技术可用于包括ACMP的GreenPak。功耗的降低会有所不同。

格林帕克CMICs are often used in projects to reduce the system’s current consumption. However, several components within GreenPAKs, when active, can cause a noticeable change in current consumption. Amongst the most consumptive macrocells are the analog comparators. Table 1 is taken from the SLG46826 datasheet to highlight the ACMP’s consumption.

Table 1 SLG46826 Current Consumption

幸运的是,在不使用时可以关闭ACMPS。这可以用两种方式完成:

  1. 通过PWR UP.输入ACMP。
  2. Enabling a Wake-Sleep [WS] counter for the ACMP.

唤醒睡眠控制需要配置为WS模式的专用计数器。这是在许多(但不是全部)Greenpaks中提供的。PWR UP.控制可用于任何GreenPak,带有ACMP。当信号是HI时,ACMP为ON;使用逻辑,计数器或其他宏单元关闭ACMP可以大大降低功耗。例如,如果需要两个不同的电压阈值,则可以保持更高阈值的ACMP,直到满足较低阈值。

Figure 15 Common PWR UP Configurations

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