STMicroelectronics STM32F437IIH6TR

Overview

STM32F437IIH6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating at up to 180 MHz (225 DMIPS), featuring 2 MB flash, 256+4 KB SRAM (including 64 KB CCM), hardware crypto acceleration (AES-128/192/256, SHA-1/2, HMAC), and integrated 10/100 Ethernet MAC with IEEE 1588v2 support. It targets high-performance industrial HMI, networked medical devices, and embedded vision systems requiring real-time processing, secure connectivity, and TFT-LCD display control.

For engineers reviewing the STM32F437IIH6TR datasheet, STM32F437IIH6TR pinout, STM32F437IIH6TR application, or STM32F437IIH6TR equivalent, key selection criteria include its dual USB OTG (FS/HS), 17 timers (including advanced-control TIM1/TIM8), triple 12-bit ADCs (7.2 MSPS interleaved), 8–14-bit parallel camera interface (54 MB/s), and UFBGA176 package with 166 5 V-tolerant I/Os.

Technical Context

The device implements an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash memory, paired with a Memory Protection Unit (MPU) for robust RTOS-based system partitioning. Its multi-AHB bus matrix supports concurrent access to flash, SRAM, peripherals, and external memory via the Flexible Memory Controller (FMC).

It integrates dual CAN 2.0B controllers, two independent USB OTG PHYs (one full-speed on-chip, one high-speed with ULPI), and a dedicated Ethernet DMA engine supporting MII/RMII and IEEE 1588v2 timestamping - enabling deterministic industrial networking without host CPU overhead.

Key Specifications

Pinout & Package

STM32F437IIH6TR is housed in a 176-ball UFBGA package (10 × 10 mm, 0.8 mm pitch), optimized for high-density PCB layouts and thermal performance in industrial environments. The package supports 166 5 V-tolerant I/Os and includes dedicated power/ground balls for noise suppression across analog, digital, and I/O domains.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance MCU applications.

Compared with STM32F439IIH6, the STM32F437IIH6TR omits LTDC but retains identical Ethernet, USB, camera, and crypto capabilities - making it optimal for non-TFT applications needing maximum peripheral density. Versus STM32H743IIK6, it trades peak CPU speed for proven peripheral integration and lower power at 180 MHz, especially beneficial in thermally constrained enclosures.

Availability

STM32F437IIH6TR is available at Aetrix Electronics and suitable for industrial HMI, networked medical devices, and embedded vision systems requiring stable component supply across long-lifecycle production programs.

Supply support for STM32F437IIH6TR 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 ICs, sensors, and automotive-grade components with ISO 9001 and IATF 16949 certification.

The STM32F4-series targets high-performance embedded applications demanding real-time responsiveness, rich connectivity, and hardware-accelerated security - specifically engineered for industrial automation, medical instrumentation, and human-machine interfaces.

FAQ

What is the maximum operating temperature range for STM32F437IIH6TR?

The STM32F437IIH6TR is rated for industrial temperature operation from –40 °C to +85 °C, validated per ST's qualification standards (AEC-Q100 not applicable, but qualified to JEDEC JESD47). Thermal derating begins above 70 °C ambient when using all peripherals at full clock rate; design must ensure θ_JA ≤ 30 °C/W for sustained 180 MHz operation.

Does STM32F437IIH6TR support external SDRAM, and what interface does it use?

Yes, it supports external SDRAM up to 256 MB via the Flexible Memory Controller (FMC) using standard 16-bit or 32-bit SDRAM protocols. The FMC provides dedicated control signals (RAS/CAS/WE), address multiplexing, and auto-refresh management - eliminating need for external SDRAM controller logic in memory-intensive applications like video buffering or large GUI frame stores.

How many independent CAN interfaces does STM32F437IIH6TR provide, and are they fully compliant?

The device integrates two independent bxCAN 2.0B controllers, each supporting both standard (11-bit) and extended (29-bit) identifiers, bit rates up to 1 Mbit/s, and hardware message filtering with 28 filter banks. Both controllers are fully compliant with ISO 11898-1:2015 and support loopback, silent, and self-test modes for functional safety validation.

Is the USB OTG high-speed interface on STM32F437IIH6TR implemented with an internal PHY?

No - the USB OTG high-speed (HS) interface requires an external ULPI PHY (e.g., USB334x or TUSB1210), as the chip provides only the HS controller and ULPI interface pins (D0–D7, CLK, DIR, NXT, STP). In contrast, the full-speed (FS) OTG interface includes a fully integrated on-chip PHY, enabling direct USB cable connection without external components.