Description
STM32H743xI devices are based on the high-performance Arm® Cortex®-M7 32-bit RISC
core operating at up to 400 MHz. The Cortex® -M7 core features a floating point unit (FPU)
which supports Arm® double-precision (IEEE 754 compliant) and single-precision data
processing instructions and data types. STM32H743xI devices support a full set of DSP
instructions and a memory protection unit (MPU) to enhance application security.
STM32H743xI devices incorporate high-speed embedded memories with a dual-bank Flash
memory up to 2 Mbytes, 1 Mbyte of RAM (including 192 Kbytes of TCM RAM, 864 Kbytes of
user SRAM and 4 Kbytes of backup SRAM), as well as an extensive range of enhanced
I/Os and peripherals connected to APB buses, AHB buses, 2x32-bit multi-AHB bus matrix
and a multi layer AXI interconnect supporting internal and external memory access.
All the devices offer three ADCs, two DACs, two ultra-low power comparators, a low-power
RTC, a high-resolution timer, 12 general-purpose 16-bit timers, two PWM timers for motor
control, five low-power timers and a true random number generator (RNG). The devices
support four digital filters for external sigma-delta modulators (DFSDM). They also feature
standard and advanced communication interfaces.
•
Standard peripherals
– Four I2Cs
– Four USARTs, four UARTs and one LPUART
– Six SPIs, three I2Ss in half-duplex mode. To achieve audio class accuracy, the I2S
peripherals can be clocked by a dedicated internal audio PLL or by an external
clock to allow synchronization.
– Four SAI serial audio interfaces
– One SPDIFRX interface
– One SWPMI (Single Wire Protocol Master Interface)
– Management Data Input/Output (MDIO) slaves
– Two SDMMC interfaces
– A USB OTG full-speed and a USB OTG high-speed interface with full-speed
capability (with the ULPI)
– One FDCAN plus one TT-CAN interface
– An Ethernet interface
– Chrom-ART Accelerator™
– HDMI-CEC
•
Advanced peripherals including
– A flexible memory control (FMC) interface
– A Quad-SPI Flash memory interface
– A camera interface for CMOS sensors
– An LCD-TFT display controller
– A JPEG hardware compressor/decompressor
STM32H743xI devices operate in the –40 to +85 °C temperature range from a 1.62 to 3.6 V
power supply. The supply voltage can drop down to 1.62 V by using an external power
supervisor (see Section 3.5.2: Power supply supervisor) and connecting the PDR_ON pin to
VSS. Otherwise the supply voltage must stay above 1.71 V with the embedded power
voltage detector enabled.
Dedicated supply inputs for USB (OTG_FS and OTG_HS) are available on all packages
except LQFP100 to allow a greater power supply choice.
A comprehensive set of power-saving modes allows the design of low-power applications.
STM32H743xI devices are offered in 8 packages ranging from 100 pins to 240 pins/balls.
The set of included peripherals changes with the device chosen.
These features make STM32H743xI microcontrollers suitable for a wide range of
applications:
•
Motor drive and application control
•
Medical equipment
•
Industrial applications: PLC, inverters, circuit breakers
•
Printers, and scanners
•
Alarm systems, video intercom, and HVAC
•
Home audio appliances
•
Mobile applications, Internet of Things
•
Wearable devices: smart watches.
Features
Core
• 32-bit Arm® Cortex®-M7 core with doubleprecision FPU and L1 cache: 16 Kbytes of data
and 16 Kbytes of instruction cache allowing
one cache line to be filled in a single access
from the 256-bit embedded Flash memory;
frequency up to 400 MHz, MPU, 856 DMIPS/
2.14 DMIPS/MHz (Dhrystone 2.1), and DSP
instructions
Memories
• Up to 2 Mbytes of Flash memory with readwhile-write support
• 1 Mbyte of RAM: 192 Kbytes of TCM RAM (inc.
64 Kbytes of ITCM RAM + 128 Kbytes of
DTCM RAM for time critical routines),
864 Kbytes of user SRAM, and 4 Kbytes of
SRAM in Backup domain
• Dual mode Quad-SPI memory interface
running up to 133 MHz
• Flexible external memory controller with up to
32-bit data bus: SRAM, PSRAM,
SDRAM/LPSDR SDRAM, NOR/NAND Flash
clocked up to 133 MHz in synchronous mode
• CRC calculation unit
Security
• ROP, PC-ROP, active tamper
General-purpose input/outputs
• Up to 168 I/O ports with interrupt capability
– Fast I/Os capable of up to 133 MHz
– Up to 164 5 V-tolerant I/Os
Reset and power management
• 3 separate power domains which can be
independently clock gated or switched off to
maximize power efficiency:
– D1: high-performance capabilities for high
bandwidth peripherals
– D2: communication peripherals and timers
– D3: reset/clock control/power management
• 1.62 to 3.6 V application supply and I/Os
• POR, PDR, PVD and BOR
• Dedicated USB power embedding a 3.3 V
internal regulator to supply the internal PHYs
• Embedded regulator (LDO) with configurable
scalable output to supply the digital circuitry
• Voltage scaling in Run and Stop mode (5
configurable ranges)
• Backup regulator (~0.9 V)
• Voltage reference for analog peripheral/VREF+
• Low-power modes: Sleep, Stop, Standby and
VBAT supporting battery charging
Low-power consumption
• Total current consumption down to 4 µA
Clock management
• Internal oscillators: 64 MHz HSI, 48 MHz
HSI48, 4 MHz CSI, 40 kHz LSI
• External oscillators: 4-48 MHz HSE,
32.768 kHz LSE
• 3× PLLs (1 for the system clock, 2 for kernel
clocks) with fractional mode
