Tips for measuring CC2640 low power consumption

Aguilera

Tips for measuring CC2640 low power consumption [Copy link]

My most recent project was to use cc2640 to make a Bluetooth door lock. After the function was implemented, it took a day or two to figure out the low power consumption.

In fact, power consumption mainly consists of two aspects

1. It is the duration of Bluetooth broadcast. The longer this period is, the lower the power consumption will be.

2. Some IO ports have leakage

To test power consumption, you can first turn off the Bluetooth broadcast completely to measure the power consumption of the entire peripheral; some ordinary output ports generally do not affect the power consumption, as long as the high and low are set properly, there will be no leakage. The main thing to pay attention to is some input ports, especially the AD port, which will cause leakage due to different internal circuits. This is generally set as input during collection and output at other times.

When measuring power consumption, pay attention to setting the multimeter to high gear first, and then switch to low gear when the current is small to avoid damaging the meter. When testing, use a relatively stable power supply to measure the power supply to avoid abnormal situations.

alan000345

Very nice sharing, good experience.