6.4 Operation Modes

MGC3140 offers three operation modes that allow the user to balance power consumption with device functionality. In all of the modes described in this section, power saving is configured by GestIC Library messages. A summary of the operation modes, as well as their respective current consumption values are given in the table below:

Table 6-1. Operation Modes Summary
ModeEntryExitComments
ProcessingI2C/Approach/MCLR/WDTR/SW ResetGestIC® Library Message/ Non-Activity Time-out/WDTRProcessing mode with up to five electrodes continuously running

Full positioning and Gesture Recognition capabilities

Wake-up on ApproachHand not present Time-out/GestIC® Library MessageI2C Message/MCLR/WDTR/Hand DetectedScan phase with a configurable number of Rx active channels, wake-up timer is used to resume the system

Approach detection capability

Fast wake-up time

Very low-power consumption

Deep SleepGestIC® Library MessageI2C Message/MCLRSPU halted, Watchdog OFF

No positioning or gesture detection

Extreme low-power consumption: Needs trigger from application host to switch into

Wake-up on Approach or Processing mode

Figure 6-6. Operation Mode Flow