STM32F469 datasheet(8/91 Pages) STMICROELECTRONICS

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Display and graphics overview

AN4861

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DocID029237 Rev 2

Display and graphics overview

This section describes the basic terms used on the displays and graphics context in order to

provide an overview of the general display and graphics environment. This section also

summarizes the display interfaces supported by the STM32 MCUs.

1.1

Basic graphics concepts

This section describes a basic embedded graphic system, the display module categories

and the display technologies.

Basic embedded graphic system

A basic embedded graphic system can be schematized as described in Figure 1.

Figure 1. Basic embedded graphic system

A basic embedded graphic system is composed of a microcontroller, a framebuffer, a

display controller and a display glass.

•

The microcontroller computes the image to be displayed in the framebuffer, assembling

graphical primitives such as icons or images. The CPU performs this operation by

running a graphical library software. This process can be accelerated by a dedicated

hardware like the DMA2D Chrom-Art Accelerator®, used by the graphical library. The

more often the framebuffer is updated, the more fluent the animations are (animation

fps).

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