Datasheet

DS12110 Rev 5 29/231

STM32H743xI Functional overview

3.15 Flexible memory controller (FMC)

The FMC controller main features are the following:

 Inter

face 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:

 Dir

ect 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

ccesses are supported as well as code execution.

The opcode and the frame format are fully programmable.

3.17 Analog-to-digital converters (ADCs)

The STM32H743xI devices embed three analog-to-digital converters, which resolution can

be configured to 16, 14, 12, 10 or 8 bits. The sampling rates are respectively 3.6 MSPS,

4 MSPS, 4.5 MSPS, 5 MSPS and 6 MSPS when the ADC frequency (f

ADC

) is 36 MHz.

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:

 Simult

aneous 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.