STM32F412XE datasheet(22/201 Pages) STMICROELECTRONICS

22 / 201 page

Functional overview

STM32F412xE/G

22/201

DocID028087 Rev 7

The DMA can be used with the main peripherals:

•

SPI and I2S

•

I2C and I2CFMP

•

USART

•

General-purpose, basic and advanced-control timers TIMx

•

SD/SDIO/MMC/eMMC host interface

•

Quad-SPI

•

ADC

•

Digital Filter for sigma-delta modulator (DFSDM) with a separate stream for each filter.

3.11

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.

3.12

Quad-SPI memory interface (QUAD-SPI)

All devices embed a Quad-SPI memory interface, which is a specialized communication

interface targeting single, dual or quad-SPI Flash memories. It can work in direct mode

through registers, external Flash status register polling mode and memory mapped mode.

Up to 256 Mbyte of external Flash memory are mapped. They can be accessed in 8, 16 or

32-bit mode. Code execution is also supported. The opcode and the frame format are fully

programmable. Communication can be performed either in single data rate or dual data

rate.

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