STMicroelectronics STM32H7A3LGH6Q

STM32H7A3xI/G devices are based on the high-performance Arm^® Cortex^®-M7 32-bit RISC core operating at up to 280 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. STM32H7A3xI/G devices support a full set of DSP instructions and a memory protection unit (MPU) to enhance application security.

STM32H7A3xI/G devices incorporate high-speed embedded memories with a dual-bank Flash memory up to 2 Mbytes, around 1.4 Mbyte of RAM (including 192 Kbytes of TCM RAM, 1.18 Mbytes of user SRAM and 4 Kbytes of backup SRAM), as well as an extensive range of enhanced I/Os and peripherals connected to four APB buses, three AHB buses, a 32-bit multi-AHB bus matrix and a multi layer AXI interconnect supporting internal and external memory access.

All the devices offer two ADCs, two DACs (one dual and one single DAC), two ultra-low power comparators, a low-power RTC, 12 general-purpose 16-bit timers, two PWM timers for motor control, three low-power timers, a true random number generator (RNG). The devices support nine digital filters for external sigma delta modulators (DFSDM). They also feature standard and advanced communication interfaces.

• Core
  • 32-bit Arm^® Cortex^®-M7 core with double-precision FPU and L1 cache: 16 Kbytes of data and 16 Kbytes of instruction cache allowing to fill one cache line in a single access from the 128-bit embedded Flash memory; frequency up to 280 MHz, MPU, 599 DMIPS/ 2.14 DMIPS/MHz (Dhrystone 2.1), and DSP instructions
    
• Memories
  • Up to 2 Mbytes of Flash memory with read while write support, plus 1 Kbyte of OTP
    
  • ~1.4 Mbytes of RAM: 192 Kbytes of TCM RAM (inc. 64 Kbytes of ITCM RAM + 128 Kbytes of DTCM RAM for time critical routines), 1.18 Mbytes of user SRAM, and 4 Kbytes of SRAM in Backup domain
    
  • 2x Octo-SPI memory interfaces with on-the-fly
    decryption, I/O multiplexing and support for serial PSRAM/NOR, Hyper RAM/Flash frame formats, running up to 140 MHz in SRD mode and up to 110 MHz in DTR mode
    
  • Flexible external memory controller with up to 32-bit data bus:
    
    • SRAM, PSRAM, NOR Flash memory clocked up to 125 MHz in Synchronous mode
    
    
    • SDRAM/LPSDR SDRAM,
    
    
    • 8/16-bit NAND Flash memory
    
    
  • CRC calculation unit
    
• Security
  • ROP, PC-ROP, active tamper, secure firmware upgrade support
    
• 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
    
    
• Low-power consumption
  • Stop: down to 32 µA with full RAM retention
    
  • Standby: 2.8 µA (Backup SRAM OFF, RTC/LSE ON, PDR OFF)
    
  • V_BAT: 0.8 µA with RTC and LSE ON
    
• Clock management
  • Internal oscillators: 64 MHz HSI, 48 MHz RC, 4 MHz CSI, 32 kHz LSI
    
  • External oscillators: 4-50 MHz HSE, 32.768 kHz LSE
    
  • 3× PLL