Low Power Modes; Figure 37. Stop Mode Menu; Figure 38. Stop Mode Entered - STMicroelectronics STM32100E-EVAL User Manual

Running the demonstration
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. 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.
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Figure 38 is displayed on the LCD.
MCU in STOP Mode
To exit press Tamper
push-button
Doc ID 18064 Rev 1
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