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STM32H743BI：High-performance and DSP with DP-FPU, ARM Cortex-M7 MCU with 2MBytes Flash, 1MB RAM, 400 MHz CPU, Art Accelerator, L1 cache, external memory interface, large set of peripherals

The STM32H743xI devices are based on the high-performance ARM^®Cortex®-M7 32-bit RISC core operating at up to 400 MHz frequency. 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. The STM32H743xI support a full set of DSP instructions and a memory protection unit (MPU) which enhances application security.

The STM32H743xI devices incorporate high-speed embedded memories with a dual-bank Flash memory up to 2 Mbytes, around 1 Mbytes 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 two APB buses, two AHB buses, a 32-bit multi-AHB bus matrix and a multi layer AXI interconnect supporting internal and external memories 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, 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.

Key Features

• Core
  • 32-bit ARM® Cortex®-M7 core with double-precision FPU and L1 cache: 16 KB of data and 16 KB of instruction cache allowing to fill one cache line 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 MB of Flash memory with read while write support
  • ~1 MB of RAM: 192 KB of TCM RAM (inc. 64 KB of ITCM RAM + 128 KB of DTCM RAM for time critical routines), 864 KB of user SRAM, and 4 KB of SRAM in Backup domain
  • Dual mode Quad-SPI memory interface
  • Flexible external memory controller with up to 32-bit data bus: SRAM, PSRAM, SDRAM/LPSDR SDRAM, NOR/NAND memories
  • CRC calculation unit
• Security
  • ROP, PC-ROP, active tamper
• Reset and power management
  • 3 separate power domains which can be independently set in low-power mode to maximize power efficiency (clock gated or switched off):
    • D1: high-performance capabilities for high bandwidth peripherals
    • D2: dedicated to communication peripherals and timers
    • D3: reset and clock control, plus 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
  • Backup regulator (~0.9 V)
  • Voltage reference for analog peripheral and VREF+
  • Low-power modes: Sleep, Stop and Standby
• Low-power consumption
  • Total current consumption down to 7 μA
• Clock management
  • Internal oscillators: 64 MHz HSI oscillator, 48 MHz RC oscillator, 4 MHz CSI oscillator, 40 kHz LSI oscillator
  • External oscillators: 1-48 MHz HSE oscillator, 32.768 kHz LSE oscillator
  • 3x PLLs (1 for the system clock, 2 for kernel clocks) with fractional mode
• General-purpose input/outputs
  • Up to 168 I/O ports with interrupt capability
    • Up to 4 fast I/Os up to 166 MHz
    • Up to 89 I/Os up to 83 MHz
    • Up to 164 5 V-tolerant I/Os
  • Up to 89 I/Os up to 83 MHz
  • Up to 164 5 V-tolerant I/Os
• Interconnect matrix
• 4 DMA controllers to unload the CPU
• Up to 35 communication peripherals
  • 4× I2C FM+ interfaces (SMBus/PMBus)
  • 4× USART/4x UARTs (ISO7816 interface, LIN, IrDA, modem control) and 1× LPUART
  • 6× SPIs, including 3 with muxed duplex I2S audio class accuracy via internal audio PLL or external clock and 1x I2S in LP domain
  • 4× SAIs (serial audio interface)
  • SPDIFRX interface
  • SWPMI single-wire protocol master I/F
  • MDIO Slave interface
  • 2× SD/SDIO/MMC interfaces
  • 2× CAN controllers supporting CAN FD protocol, out of which one supports time-triggered CAN (TT-CAN)
  • 2× USB OTG interfaces (1FS, 1HS/FS)
  • Ethernet MAC interface with DMA controller
  • HDMI-CEC
  • 8- to 14-bit camera interface up to 80 MHz
• 11 analog peripherals
  • 3× ADCs with 16-bit max. resolution (14 bits 2.7 MSPS, 16 bits 168 kSPS)
  • 1× temperature sensor
  • 2× 12-bit D/A converters (1 MHz)
  • 2× ultra-low-power comparators
  • 2× operational amplifiers (8 MHz bandwidth)
  • 1× Digital filters for sigma delta modulator (DFSDM) with 8 channels/4 filters
• Graphics
  • LCD-TFT controller supporting up to XGA Resolution
  • Chrom-ART Accelerator™ graphical hardware accelerator (DMA2D) for enhanced GUI to reduce CPU load
  • Hardware JPEG Codec
  • 1× high-resolution timer (2.5 ns max resolution)
  • 2× 32-bit timers with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input
  • 2× 16-bit advanced motor control timers
  • 10× 16-bit general-purpose timers
  • 5× 16-bit low-power timers
  • 2× watchdogs (independent and window)
  • 1× SysTick timer
  • RTC with sub-second accuracy and hardware calendar
• Debug mode
  • SWD & JTAG interfaces
  • 4 Kbyte Embedded Trace Buffer
• 2× true random number generator (3 oscillators each)
• 96-bit unique ID
• All packages are ECOPACK®2 compliant

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