Overview
The STM32H7A3II and STM32H7B3xI series, including the STM32H7B3IIT6Q, are high-performance microcontrollers from STMicroelectronics. These devices are based on the Arm® Cortex®-M7 32-bit RISC core, operating at frequencies up to 280 MHz. The Cortex®-M7 core includes a double-precision floating point unit (FPU) and supports DSP instructions, enhancing the device's capability for complex data processing and application security through a memory protection unit (MPU).
The STM32H7B3IIT6Q features extensive embedded memories, including up to 2 Mbytes of Flash memory and approximately 1.4 Mbytes of RAM. It also includes a variety of peripherals and interfaces, such as ADCs, DACs, ultra-low power comparators, and advanced communication interfaces, making it suitable for a wide range of applications.
Key Specifications
| Specification | Details |
|---|---|
| Core | 32-bit Arm® Cortex®-M7 core with double-precision FPU and L1 cache (16 Kbytes data and 16 Kbytes instruction cache) |
| Frequency | Up to 280 MHz |
| Flash Memory | Up to 2 Mbytes with read while write support, plus 1 Kbyte of OTP |
| RAM | ~1.4 Mbytes: 192 Kbytes of TCM RAM, 1.18 Mbytes of user SRAM, and 4 Kbytes of backup SRAM |
| Memory Interfaces | 2x Octo-SPI memory interfaces with on-the-fly decryption, support for serial PSRAM/NOR, Hyper RAM/Flash |
| External Memory | Flexible external memory controller with up to 32-bit data bus: SRAM, PSRAM, NOR Flash, SDRAM/LPSDR SDRAM, 8/16-bit NAND Flash |
| Peripherals | Two ADCs, two DACs, two ultra-low power comparators, low-power RTC, 12 general-purpose 16-bit timers, two PWM timers for motor control, three low-power timers |
| Communication Interfaces | 4x I2C FM+ interfaces, 5x USART/5x UARTs, 6x SPIs, 2x SAIs, SPDIFRX interface, SWPMI single-wire protocol master I/F, MDIO Slave interface, 2x SD/SDIO/MMC interfaces, 2x CAN controllers |
| Power Consumption | Stop: down to 32 µA with full RAM retention, Standby: 2.8 µA (Backup SRAM OFF, RTC/LSE ON, PDR OFF) |
| Operating Temperature | -40 to +85 °C |
| Power Supply | 1.62 to 3.6 V |
Key Features
- High-performance Arm® Cortex®-M7 core with double-precision FPU and DSP instructions
- Extensive embedded memories: up to 2 Mbytes of Flash and ~1.4 Mbytes of RAM
- Advanced peripherals: two ADCs, two DACs, ultra-low power comparators, low-power RTC, multiple timers
- Comprehensive set of communication interfaces: I2C, USART, SPI, SAIs, CAN, SD/SDIO/MMC
- Flexible external memory controller and Octo-SPI memory interfaces
- Low-power consumption modes: Stop, Standby, and power state monitoring
- Security features: ROP, PC-ROP, active tamper, secure firmware upgrade support
- Advanced graphics capabilities: LCD-TFT controller, Chrom-ART graphical hardware Accelerator
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 and Internet of Things (IoT)
- Wearable devices: smart watches
Q & A
- What is the core architecture of the STM32H7B3IIT6Q?
The STM32H7B3IIT6Q is based on the 32-bit Arm® Cortex®-M7 core with a double-precision FPU and L1 cache.
- What is the maximum operating frequency of the STM32H7B3IIT6Q?
The maximum operating frequency is up to 280 MHz.
- How much Flash and RAM does the STM32H7B3IIT6Q have?
The device has up to 2 Mbytes of Flash memory and approximately 1.4 Mbytes of RAM.
- What types of memory interfaces are supported by the STM32H7B3IIT6Q?
The device supports 2x Octo-SPI memory interfaces and a flexible external memory controller with up to 32-bit data bus.
- What are the key peripherals available on the STM32H7B3IIT6Q?
The device includes two ADCs, two DACs, ultra-low power comparators, low-power RTC, multiple timers, and various communication interfaces.
- What are the power consumption modes of the STM32H7B3IIT6Q?
The device has Stop and Standby modes with low power consumption: Stop down to 32 µA and Standby 2.8 µA.
- What is the operating temperature range of the STM32H7B3IIT6Q?
The operating temperature range is -40 to +85 °C.
- What security features are available on the STM32H7B3IIT6Q?
The device includes ROP, PC-ROP, active tamper, and secure firmware upgrade support.
- What are some typical applications of the STM32H7B3IIT6Q?
Typical applications include motor drive control, medical equipment, industrial applications, home audio appliances, and wearable devices.
- Does the STM32H7B3IIT6Q support advanced graphics capabilities?
Yes, it supports LCD-TFT controller and Chrom-ART graphical hardware Accelerator.
- What communication interfaces are available on the STM32H7B3IIT6Q?
The device includes I2C, USART, SPI, SAIs, CAN, and SD/SDIO/MMC interfaces.
