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STM32F479 数据表(PDF) 2 Page - STMicroelectronics

部件名 STM32F479
功能描述  LCD-TFT display controller (LTDC) on STM32 MCUs
PDF  91 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STM32F479 数据表(HTML) 2 Page - STMicroelectronics

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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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