Low-Power Modes; Figure 47. Temperature Sensor Error; Figure 48. Exiting Stop Mode - ST STM32303C-EVAL User Manual

UM1590

Figure 47. Temperature sensor error

2.4.6

Low-power modes

The STM32F30x/31x microcontroller provides different operating modes in which the power
consumption is reduced. The purpose of this menu is to show the behavior of the
microcontroller in different low-power modes. Stop and Standby modes are taken as
examples.
Stop mode menu
This menu allows the user to put the STM32F30x/31x in Stop mode. The firmware performs
the specific instruction sequence needed to enter Stop mode.
In this application, the STM32F30x/31x can exit Stop mode in two ways as shown in
Figure 48.

Figure 48. Exiting Stop mode

●
In the first case, The EXTI KEY button is used to make the MCU exit Stop mode.
Once the Stop mode submenu has been selected, the four LEDs continue blinking
until the "SEL" push-button is pressed, and the system enters Stop mode. When the
MCU is in Stop mode, the message shown in Figure 49
Doc ID 023892 Rev 1
Running the demonstration
is displayed on the LCD.
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