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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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STM32F469 датащи(PDF) 82 Page - STMicroelectronics |
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STM32F469 датащи(HTML) 82 Page - STMicroelectronics |
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82 / 91 page  LTDC application examples AN4861 82/91 DocID029237 Rev 2 Figure 52. FMC SDRAM MPU configuration example MPU configuration example: Quad-SPI in memory-mapped This example shows how to configure the MPU for the Quad-SPI interface. The QSPI memory contains graphic primitives, it can be accessed by the Cortex®-M7, the DMA2D or the LTDC. For that, the Quad-SPI interface should be set to memory-mapped mode and the MPU regions must be configured as described below: • Region3: defines the whole Quad-SPI addressable space, it must be set to strongly ordered to forbid any CPU speculative read access to that region. • Region4: defines the real QSPI memory space reflecting the size of the memory which can be accessed by any master. Figure 53 illustrates the MPU configuration of the Quad-SPI region. |
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