STMicroelectronics STM32H7B3VIH6Q

Overview

STM32H7B3VIH6Q from STMicroelectronics is a 32-bit Arm® Cortex®-M7 microcontroller operating at up to 280 MHz with double-precision FPU, 2 Mbytes of flash memory, 1.4 Mbytes of RAM (including 64 Kbytes ITCM + 128 Kbytes DTCM), and integrated SMPS regulator. It features dual Octo-SPI interfaces with on-the-fly AES-128 decryption, two 16-bit ADCs (up to 3.6 MSPS), dual DACs, FDCAN/TT-CAN, USB OTG HS/FS, and LCD-TFT controller - deployed in industrial motor control and medical imaging systems.

For engineers reviewing the STM32H7B3VIH6Q datasheet, STM32H7B3VIH6Q pinout, STM32H7B3VIH6Q application, or STM32H7B3VIH6Q equivalent, key selection criteria include verified 280 MHz real-time performance, deterministic TCM latency for safety-critical firmware, Octo-SPI DTR mode timing compliance (≤110 MHz), and SMPS-enabled power efficiency in battery-backed embedded gateways.

Technical Context

The device implements a six-stage dual-issue Cortex-M7 core with Harvard architecture, 16 KB instruction and 16 KB data caches, and tightly coupled memory interfaces enabling single-cycle access to ITCM/DTCM. Its interconnect matrix comprises one AXI and two AHB bus matrices with five DMA controllers-including MDMA for high-bandwidth peripheral-to-memory transfers.

Memory subsystem includes dual-bank 2 MB flash with read-while-write, 192 KB TCM RAM (64 KB ITCM + 128 KB DTCM), 1.18 MB user SRAM, and 4 KB backup SRAM. Cryptographic acceleration covers AES-128/192/256 (ECB/CBC/CTR/GCM/CCM), SHA-1/SHA-2, HMAC, and two OTFDEC engines for external Octo-SPI memory decryption.

Key Specifications

Pinout & Package

STM32H7B3VIH6Q is housed in a UFBGA176+25 package (10 mm × 10 mm, 0.8 mm pitch), featuring 176 signal balls plus 25 dedicated power/ground balls. This package supports full peripheral routing including dual Octo-SPI, FMC, LCD-TFT, and all 168 GPIOs with 164 5-V-tolerant pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance Arm Cortex-M7 microcontroller applications.

Compared with STM32H7B3VIH6Q, STM32H7B0IBK6 sacrifices power efficiency and security for lower cost and smaller package, while STM32H743VIT6 trades integrated SMPS and OTFDEC for broader availability and mature toolchain support - making STM32H7B3VIH6Q optimal for space-constrained, battery-aware, and encrypted-memory applications.

Availability

STM32H7B3VIH6Q is available at Aetrix Electronics and suitable for industrial motor control, portable medical imaging, smart building gateways, and automotive diagnostic tools requiring stable component supply across extended product lifecycles.

Supply support for STM32H7B3VIH6Q includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and analog components for industrial, automotive, and consumer markets.

The STM32H7 series targets high-end embedded applications demanding real-time determinism, cryptographic security, and rich multimedia capability - with the H7B3 variant specifically optimized for SMPS-integrated, Octo-SPI-secured edge intelligence.

FAQ

What is the maximum operating frequency and voltage range for STM32H7B3VIH6Q?

The STM32H7B3VIH6Q operates at up to 280 MHz across an ambient temperature range of −40 °C to +85 °C and a supply voltage range of 1.62 V to 3.6 V. Voltage scaling supports VOS0 (1.26 V core) for full 280 MHz performance, with minimum VDD of 1.62 V achievable only when using an external power supervisor and grounding PDR_ON.

Does STM32H7B3VIH6Q support secure firmware updates and tamper detection?

Yes. It integrates Read-Out Protection (ROP), PC-ROP, active tamper pins (2 configurable), and secure firmware upgrade support via the Secure Access Mode. The embedded HASH processor (MD5/SHA-1/SHA-2) and AES engine enable signature verification and encrypted image loading from external Octo-SPI memory decrypted in hardware by OTFDEC.

How many ADC channels and what resolution does STM32H7B3VIH6Q provide?

It includes two 16-bit ADCs supporting up to 24 total channels with sampling rates up to 3.6 MSPS. Both ADCs share analog inputs and support hardware oversampling, injected/conversion modes, and synchronous dual-mode operation - validated in DS13139 Rev 8 Table 1 for the VIH package with full 24-channel capability.

What development tools and debug interfaces are supported?

The device supports SWD and JTAG debugging with a 4 KB Embedded Trace Buffer, compatible with ST-LINK/V2-1, ST-LINK/V3, and third-party tools like Segger J-Link. It also supports STM32CubeIDE, STM32CubeMX for pin/peripheral configuration, and the STM32H7B3 evaluation board (STM32H7B3I-EVAL) for rapid prototyping of LCD-TFT, Octo-SPI, and SMPS applications.