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COMPB是CC2640中的低功耗时钟比较器，工作在32kHz，用于监测如电源电压、模拟传感器输出等慢速信号，能唤醒Sensor Controller从待机状态。它提供多种参考电压，并可通过外部电阻网络调整输入匹配选择的参考电压，其输出翻转时，通过COMPB Event Trigger触发Sensor Controller唤醒。
COMPB简称低功耗时钟比较器Low-power clocked comparator
The COMPB peripheral is low-power clocked comparator that is updated at 32 kHz. COMPB can be used to continuously monitor slow signals and wake up the Sensor Controller from standby. Monitored signals include such as:
- Power supply voltage
- Analog sensor output
The COMPB positive input signal is connected to the input of the ADC peripheral.
The following reference voltages are available:
- VDDS / 2
- VDDS / 3
- VDDS / 4
- DCOUPL
- DCOUPL / 2
- DCOUPL / 3
- DCOUPL / 4
An external resistor network can be used to scale the COMPB input so it matches the selected reference voltage.
The COMPB Event Trigger resource
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