3 Results

To minimize power consumption, the microcontroller must be run at 1.8V. The current of the microcontroller and CIPs, in this scenario, was measured by the system to be approximately 2.2–2.4 μA. There’s room to decrease the consumption further if either the fixed low-power 1V reference or an external reference level is used instead. However, this will impact the sensitivity.

For most peripherals, utilizing the Analog Peripheral Manager (APM) enables analog peripherals to be switched ON or OFF during Sleep mode, resulting in power savings. However, the APM requires a clock source such as LFINTOSC to remain active, which adds to the power draw of these extremely low-power analog peripherals (~2.8 μA on the display). As a result, in this specific situation, it is more efficient to keep the peripherals enabled than to toggle them ON and OFF.