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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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STM32F469 데이터시트(PDF) 60 Page - STMicroelectronics |
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STM32F469 데이터시트(HTML) 60 Page - STMicroelectronics |
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60 / 91 page  Saving power consumption AN4861 60/91 DocID029237 Rev 2 5 Saving power consumption When an application is in idle state and displaying only a screen saver, it is important to drive the STM32 chip in sleep mode to reduce the power consumption. In sleep mode all peripherals can be enabled (FMC-SDRAM and LTDC for instance) while the CPU is stopped. External memories such as SDRAM or QSPI FLASH can be driven in low-power modes whenever it is needed in order to avoid the waste of power. If the application is in low-power state but requires to display graphics, the LTDC can be kept active and the SDRAM can be put in self-refresh mode (in order to save power). If the application is set in power-down mode, it saves even more power. The display can also be disabled or put in low-power mode if it is not needed when running the application. |
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