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STM32F479 数据表(PDF) 2 Page - STMicroelectronics |
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STM32F479 数据表(HTML) 2 Page - STMicroelectronics |
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2 / 91 page ![]() Contents AN4861 2/91 DocID029237 Rev 2 Contents 1 Display and graphics overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.1 Basic graphics concepts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 1.2 Display interface standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 1.3 Display interfaces supported by STM32 MCUs . . . . . . . . . . . . . . . . . . . . 13 2 Overview of LTDC controller and STM32 MCUs graphical portfolio . 15 2.1 LCD-TFT display controller on STM32 MCUs . . . . . . . . . . . . . . . . . . . . . 15 2.2 LTDC availability and graphic portfolio across STM32 families . . . . . . . . 15 2.3 LTDC in a smart architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2.4 Advantages of using an STM32 LTDC controller . . . . . . . . . . . . . . . . . . . 19 3 LCD-TFT (LTDC) display controller description . . . . . . . . . . . . . . . . . . 20 3.1 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.1.1 LTDC clock domains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.1.2 LTDC reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 3.2 Flexible timings and hardware interface . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.2.1 LCD-TFT pins and signal interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3.2.2 Fully programmable timings for different display sizes . . . . . . . . . . . . . 22 3.3 Two programmable LTDC layers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.3.1 Flexible window position and size configuration . . . . . . . . . . . . . . . . . . 26 3.3.2 Programmable layer: color framebuffer . . . . . . . . . . . . . . . . . . . . . . . . . 27 3.4 Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 3.5 Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4 Creating a graphical application with LTDC . . . . . . . . . . . . . . . . . . . . . 31 4.1 Determining graphical application requirements . . . . . . . . . . . . . . . . . . . 31 4.2 Checking the display size and color depth compatibility with the hardware configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 4.2.1 Framebuffer memory size requirements and location . . . . . . . . . . . . . . 31 4.2.2 Checking display compatibility considering the memory bandwidth requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 4.2.3 Check the compatibility of the display panel interface with the LTDC . . 39 4.3 STM32 package selection guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 |
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