STM32H757II datasheet(34/251 Pages) STMICROELECTRONICS

34 / 251 page

Functional overview

STM32H757xI

34/251

DS12931 Rev 1

3.15

Flexible memory controller (FMC)

The FMC controller main features are the following:

•

Interface with static-memory mapped devices including:

–

Static random access memory (SRAM)

–

NOR Flash memory/OneNAND Flash memory

–

PSRAM (4 memory banks)

–

NAND Flash memory with ECC hardware to check up to 8 Kbytes of data

•

Interface with synchronous DRAM (SDRAM/Mobile LPSDR SDRAM) memories

•

8-,16-,32-bit data bus width

•

Independent Chip Select control for each memory bank

•

Independent configuration for each memory bank

•

Write FIFO

•

Read FIFO for SDRAM controller

•

The maximum FMC_CLK/FMC_SDCLK frequency for synchronous accesses is the

FMC kernel clock divided by 2.

3.16

Quad-SPI memory interface (QUADSPI)

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

interface targeting Single, Dual or Quad-SPI Flash memories. It supports both single and

double datarate operations.

It can operate in any of the following modes:

•

Direct mode through registers

•

External Flash status register polling mode

•

Memory mapped mode.

Up to 256 Mbytes of external Flash memory can be mapped, and 8-, 16- and 32-bit data

accesses are supported as well as code execution.

The opcode and the frame format are fully programmable.

3.17

Analog-to-digital converters (ADCs)

The STM32H757xI devices embed three analog-to-digital converters, which resolution can

be configured to 16, 14, 12, 10 or 8 bits.

Each ADC shares up to 20 external channels, performing conversions in the Single-shot or

Scan mode. In Scan mode, automatic conversion is performed on a selected group of

analog inputs.

Additional logic functions embedded in the ADC interface allow:

•

Simultaneous sample and hold

•

Interleaved sample and hold

The ADC can be served by the DMA controller, thus allowing to automatically transfer ADC

converted values to a destination location without any software action.

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