DocID018933 Rev 2

7/18

AN3413

Application description

17

When the used push button is pressed again, the power consumption measurement

functions are launched. These functions consist of configuring the device for each low

power consumption mode and then measuring and displaying the result on the LCD panel.

Figure 3. Function Change state diagram

BAR0 to BAR3 are used by the application to indicate ongoing measurements as shown in

Table 1.

switched off. Once the measurement is performed the LCD is switched on to display the

power consumption value.

Table 1. Bars and LCD display linked to functions

Function

Bars

VDD / Linear sensor / Touch buttons

Run mode / Sleep mode

MS19812V1

reset

START

RUN

SLEEP

IDD

VDD

meas

LPRUN

LPSLEEP

IDD

TOUCH

LINEAR

SENSOR

STOP

IDD

STANDBY

IDD

User button

pressed

TOUCHKEYS