Datasheet

Functional overview STM32F413xG/H
22/208 DocID029162 Rev 6
3.9 DMA controller (DMA)
The devices feature two general-purpose dual-port DMAs (DMA1 and DMA2) with 8
streams each. They are able to manage memory-to-memory, peripheral-to-memory and
memory-to-peripheral transfers. They feature dedicated FIFOs for APB/AHB peripherals,
support burst transfer and are designed to provide the maximum peripheral bandwidth
(AHB/APB).
The two DMA controllers support circular buffer management, so that no specific code is
needed when the controller reaches the end of the buffer. The two DMA controllers also
have a double buffering feature, which automates the use and switching of two memory
buffers without requiring any special code.
Each stream is connected to dedicated hardware DMA requests, with support for software
trigger on each stream. Configuration is made by software and transfer sizes between
source and destination are independent.
The DMA can be used with the main peripherals:
• SPI and I
2
S
• I
2
C and I
2
CFMP
• USART
• General-purpose, basic and advanced-control timers TIMx
• SD/SDIO/MMC/eMMC host interface
• Quad-SPI
• ADC
• DAC
• Digital Filter for sigma-delta modulator (DFSDM) with a separate stream for each filter
• SAI.
3.10 Flexible static memory controller (FSMC)
The Flexible static memory controller (FSMC) includes a NOR/PSRAM memory controller. It
features four Chip Select outputs supporting the following modes: SRAM, PSRAM and NOR
Flash memory.
The main functions are:
• 8-,16-bit data bus width
• Write FIFO
• Maximum FSMC_CLK frequency for synchronous accesses is 90 MHz.
LCD parallel interface
The FSMC 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.
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