Datasheet

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Functional overview STM32F427xx STM32F429xx

24/239 DocID024030 Rev 10

The DMA can be used with the main peripherals:

• SPI and I

• I

• USART

• General-purpose, basic and advanced-control timers TIMx

• DAC

• SDIO

• Camera interface (DCMI)

• ADC

• SAI1.

3.9 Flexible memory controller (FMC)

All devices embed an FMC. It has four Chip Select outputs supporting the following modes:

PCCard/Compact Flash, SDRAM/LPSDR SDRAM, SRAM, PSRAM, NOR Flash and NAND

Flash.

Functionality overview:

• 8-,16-, 32-bit data bus width

• Read FIFO for SDRAM controller

• Write FIFO

• Maximum FMC_CLK/FMC_SDCLK frequency for synchronous accesses is 90 MHz.

LCD parallel interface

The FMC can be configured to interface seamlessly with most graphic LCD controllers. It

supports the Intel 8080 and Motorola 6800 modes, and is flexible enough to adapt to

specific LCD interfaces. This LCD parallel interface capability makes it easy to build cost-

effective graphic applications using LCD modules with embedded controllers or high

performance solutions using external controllers with dedicated acceleration.

3.10 LCD-TFT controller (available only on STM32F429xx)

The LCD-TFT display controller provides a 24-bit parallel digital RGB (Red, Green, Blue)

and delivers all signals to interface directly to a broad range of LCD and TFT panels up to

XGA (1024x768) resolution with the following features:

• 2 displays layers with dedicated FIFO (64x32-bit)

• Color Look-Up table (CLUT) up to 256 colors (256x24-bit) per layer

• Up to 8 Input color formats selectable per layer

• Flexible blending between two layers using alpha value (per pixel or constant)

• Flexible programmable parameters for each layer

• Color keying (transparency color)

• Up to 4 programmable interrupt events.

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