Running the demonstration
UM1011
32/49
Doc ID 18064 Rev 1
2.7.5
Low power modes
The STM32F100ZET6 microcontroller features several operating modes in which the power
consumption is reduced. The purpose of this menu is to demonstrate the behavior of the
microcontroller in various low power modes. The Stop and Standby modes are used as
examples.
Stop mode menu
This menu allows you to put the STM32F100ZET6 in Stop mode. The software performs the
specific instruction sequence required to enter Stop mode.
Figure 37.
Stop mode menu
There are two ways to make the STM32F100ZET6 exit Stop mode.
●
In the first case, you can use the EXTI Key button. Once the
Stop mode
submenu has
been selected, the red 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 38
is displayed on the LCD.
Figure 38.
Stop mode entered
The MCU remains in Stop mode until the TAMPER push-button is pressed as shown in
Figure 39
. Once you press the TAMPER push-button, the MCU exits Stop mode. The
system clock is then set to 24 MHz and the application resumes execution.
MCU in STOP Mode
To exit press Tamper
push-button
