STMicroelectronics STM32H7B0IBK6Q

Overview

STM32H7B0IBK6Q from STMicroelectronics is a 32-bit Arm® Cortex®-M7 microcontroller operating at up to 280 MHz, featuring double-precision FPU, 16 KB instruction and 16 KB data cache, 128 KB flash, and ~1.4 MB RAM (including 64 KB ITCM + 128 KB DTCM). It integrates dual Octo-SPI interfaces with on-the-fly AES-128 decryption, FMC for SDRAM/NAND/NOR, and SMPS support - deployed in industrial motor control and real-time vision systems.

For engineers reviewing the STM32H7B0IBK6Q datasheet, STM32H7B0IBK6Q pinout, STM32H7B0IBK6Q application, or STM32H7B0IBK6Q equivalent, key selection criteria include TCM RAM allocation for deterministic code execution, Octo-SPI DTR mode timing (up to 110 MHz), SMPS integration for power efficiency, and dual CAN FD + TT-CAN for automotive networked control.

Technical Context

The device implements a six-stage dual-issue Cortex-M7 core with Harvard architecture, dynamic branch prediction, and AXI/TCM/AXI-Lite interconnects enabling concurrent high-bandwidth memory access. Its L1 cache fills one line per access from 128-bit flash, reducing instruction fetch latency.

Memory subsystem includes three independent domains: CPU domain (CD) with full clock gating, Smart Run Domain (SRD) hosting RTC, backup SRAM, DAC, and DFSDM2, and AXI/AHB bus matrices supporting simultaneous flash, SRAM, and peripheral access at 280 MHz.

Key Specifications

Pinout & Package

STM32H7B0IBK6Q is housed in a UFBGA176+25 package (10 × 10 mm, 0.8 mm pitch), with 138 GPIOs (164 5-V-tolerant), 2 tamper pins (1 active, 1 passive), and dedicated power domains (VCORE, VDDMMC, VDDUSB, VBAT).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H743VIT6 and STM32H750VBH6, the STM32H7B0IBK6Q uniquely combines integrated SMPS, dual OTFDEC-enabled Octo-SPI, and FMC - making it optimal for battery-powered industrial edge nodes requiring secure external memory and efficient power conversion in minimal PCB area.

Availability

STM32H7B0IBK6Q is available at Aetrix Electronics and suitable for industrial motor control, portable medical imaging, smart building HVAC, and automotive body electronics requiring stable component supply across multi-year production cycles.

Supply support for STM32H7B0IBK6Q 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 devices for industrial, automotive, and consumer markets.

The STM32H7 series targets high-end embedded applications demanding real-time determinism, cryptographic security, and rich multimedia capabilities - with the H7B0 variant optimized for cost-sensitive, power-efficient edge nodes requiring SMPS and dual encrypted serial memory interfaces.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32H7B0IBK6Q achieves 280 MHz via its Arm Cortex-M7 core with six-stage dual-issue pipeline and dynamic branch prediction. This frequency requires VCORE supplied at 1.2 V (VOS1 range) using either the integrated SMPS or external LDO, with all clocks derived from PLL1 configured for 280 MHz system clock and proper wait states applied to flash and TCM accesses.

Does this MCU support secure boot and firmware updates?

Yes. It supports secure firmware upgrade via ROP/PC-ROP, active tamper detection, Secure Access Mode, and on-the-fly decryption of external Octo-SPI memory using two independent AES-128 OTFDEC units. The embedded 1 KB OTP stores root keys, and the TRNG provides entropy for signature generation during signed firmware validation.

How does the SMPS integration reduce system power consumption?

The integrated SMPS step-down converter replaces an external DC-DC IC, achieving >90% efficiency when stepping 5 V or 3.3 V down to 1.2 V for VCORE. In Stop mode, it can be disabled while retaining LDO operation, contributing to the 32 µA total current draw with full RAM retention - critical for battery-backed industrial controllers.

Can both Octo-SPI interfaces operate simultaneously with different memory types?

Yes. OCTOSPI1 and OCTOSPI2 are fully independent, each supporting SDR/DTR modes up to 140/110 MHz respectively. They can concurrently drive different memory types - e.g., OCTOSPI1 for encrypted HyperRAM used as frame buffer, OCTOSPI2 for secure boot from encrypted NOR flash - with separate OTFDEC engines and clock domains.