STMicroelectronics STM32H745IIT3

STM32H745xI/G devices are based on the high-performance Arm^® Cortex^®-M7 and Cortex^®-M4 32-bit RISC cores. The Cortex^®-M7 core operates at up to 480 MHz and the Cortex^®-M4 core at up to 240 MHz. Both cores feature a floating point unit (FPU) which supports Arm^® single- and double-precision (Cortex^®-M7 core) operations and conversions (IEEE 754 compliant), including a full set of DSP instructions and a memory protection unit (MPU) to enhance application security.

STM32H745xI/G devices incorporate high-speed embedded memories with a dual-bank Flash memory of up to 2 Mbytes, up to 1 Mbyte of RAM (including 192 Kbytes of TCM RAM, up to 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, 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.

• Dual core
  • 32-bit Arm® Cortex®-M7 core with double-precision FPU and L1 cache: 16 Kbytes of data and 16 Kbytes of instruction cache; frequency up to 480 MHz, MPU, 1027 DMIPS/ 2.14 DMIPS/MHz (Dhrystone 2.1), and DSP instructions
  • 32-bit Arm® 32-bit Cortex®-M4 core with FPU, Adaptive real-time accelerator (ART Accelerator™) for internal Flash memory and external memories, frequency up to 240 MHz, MPU, 300 DMIPS/1.25 DMIPS /MHz (Dhrystone 2.1), and DSP instructions
• Memories
  • Up to 2 Mbytes of Flash memory with read-while-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 memory clocked up to 125 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
• Reset and power management
  • 3 separate power domains which can be independently clock-gated or switched off:
    • D1: high-performance capabilities
    • 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) to supply the digital circuitry
  • High power-efficiency SMPS step-down converter regulator to directly supply VCORE and/or external circuitry
  • Voltage scaling in Run and Stop mode (6 configurable ranges)
  • Backup regulator (~0.9 V)
  • Voltage reference for analog peripheral/VREF+