UM1510 datasheet(41/69 Pages) STMICROELECTRONICS

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UM1510

Running the demonstration

Doc ID 022713 Rev 1

41/69

Figure 49.

Enter Sleep LP Mode submenu

Once the joystick push-button has been pressed, the MCU enters in Sleep LP mode and

waits for the rising edge on PA0, that can be generated by the external counter, to exit the

MCU from SLEEP LP mode.

When the external rising edge is generated on PA0, the MCU exits the Sleep LP Mode and

the message shown in Figure 50 is displayed on the LCD screen.

Figure 50.

Sleep LP Mode display submenu

Once the joystick push-button has been pressed, the MCU exits the IDD Sleep LP Mode

submenu and the message shown in Figure 41 is displayed on the LCD screen.

Note:

When Sleep LP mode is entered, the system clock is configured to run at MSI 32 KHz, all

peripherals are OFF, all I/Os are configured as analog inputs, the RTC is set to OFF, the

ultralow power feature is enabled, and the FLASH memory is in power-down.

After executing the Sleep LP Mode submenu, the RTC is OFF. Refer to Calendar menu to

re-configure the time, date and alarm.

●

If the IDD STOP Mode submenu is selected, the STOP message is displayed on the

LCD Glass and the message shown in Figure 51 is displayed on the LCD screen.

MCU will be in SLEEP

peripherals OFF,

all I/O in Analog

Run at MSI 32KHz all

input and RTC OFF

Press JoyStick to

continue.

LP Mode

Sleep LP Mode

Press JoyStick to

continue.

IDD: xxx,xxx uA

UM1510 Datasheet(PDF) 41 Page - STMicroelectronics