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ST STM32L496 Series User Manual

ST STM32L496 Series
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Contents AN4943
2/22 DocID029937 Rev 2
Contents
1 Reference documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Chrom-ART Accelerator™ (DMA2D) application use case overview . . 6
3 LCD-TFT display on FSMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Hardware interface description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Display Command Set (DCS) software interface . . . . . . . . . . . . . . . . . . . . 8
3.3 Controlling the D/CX signal with STM32L496xx/L4A6xx/
L4Rxxx/L4Sxxx microcontrollers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 Chrom-ART Accelerator™ (DMA2D) configuration in STM32CubeL4 11
4.1 LCD partial refresh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
5 New DMA2D features to support Intel 8080 displays . . . . . . . . . . . . . . 13
5.1 Intel 8080 interface color coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.2 DMA2D reordering features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2.1 Red and blue swap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.2.2 Byte swap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.3 DMA2D reordering use case examples . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3.1 24bpp/18bpp over 16-bit FSMC data bus interface . . . . . . . . . . . . . . . . 17
5.3.2 24bpp/18bpp over 8-bit FSMC data bus interface . . . . . . . . . . . . . . . . . 18
5.3.3 16bpp over 8-bit FSMC data bus interface . . . . . . . . . . . . . . . . . . . . . . 19
6 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Table of Contents

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ST STM32L496 Series Specifications

General IconGeneral
BrandST
ModelSTM32L496 Series
CategoryMicrocontrollers
LanguageEnglish

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