STMicroelectronics STM32F427AGH6

Overview

STM32F427AGH6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 180 MHz (225 DMIPS), featuring 1 MB flash memory, 256 KB SRAM + 4 KB backup SRAM, and integrated USB OTG HS/FS, Ethernet MAC, and dual CAN 2.0B interfaces. It targets high-performance embedded applications such as industrial HMI controllers, networked motor drives, and real-time data acquisition systems requiring deterministic timing and rich peripheral integration.

For engineers reviewing the STM32F427AGH6 datasheet, STM32F427AGH6 pinout, STM32F427AGH6 application, or STM32F427AGH6 equivalent, key selection criteria include its UFBGA176 package with 143 I/Os, 180 MHz CPU clock with ART Accelerator™ enabling zero-wait-state flash execution, dual 12-bit DACs, triple 12-bit ADCs (7.2 MSPS in interleaved mode), and hardware IEEE 1588v2 support for precision time synchronization.

Technical Context

The STM32F427AGH6 implements an Arm Cortex-M4 core with floating-point unit and DSP extensions, coupled with ST's Adaptive Real-Time Accelerator (ART Accelerator™) that eliminates flash wait states at full 180 MHz operation. Its memory subsystem includes two-bank flash (enabling read-while-write), 256 KB main SRAM plus 64 KB CCM RAM, and flexible external memory controller supporting SDRAM, NOR, and NAND.

Peripheral architecture features a multi-AHB bus matrix for concurrent high-bandwidth access, dedicated DMA channels for Ethernet, USB OTG HS, and camera interface, and advanced connectivity including 10/100 Ethernet MAC with hardware timestamping, dual CAN 2.0B controllers, and 8–14-bit parallel DCMI supporting up to 54 MB/s image capture.

Key Specifications

Pinout & Package

STM32F427AGH6 is housed in a 10 mm × 10 mm UFBGA176 package with 143 active signal balls and 33 power/ground balls. The package supports fine-pitch PCB assembly and offers thermal performance suitable for sustained 180 MHz operation with appropriate board-level heat dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance ARM Cortex-M4 microcontroller applications.

Compared with STM32F427AGH6, STM32F429IGT6 adds display-specific hardware at the cost of package size and thermal profile, while STM32F469NIH6 shifts focus toward MIPI-based displays and omits Ethernet - making STM32F427AGH6 optimal for compact, Ethernet-connected industrial controllers requiring balanced peripheral coverage.

Availability

STM32F427AGH6 is available at Aetrix Electronics and suitable for industrial HMI controllers, networked motor drives, medical data acquisition units, and smart building gateways requiring stable component supply across long-life product cycles.

Supply support for STM32F427AGH6 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, specializing in microcontrollers, power management, sensors, and automotive ICs with strong emphasis on industrial and embedded markets.

The STM32F4-series is designed for high-performance real-time embedded applications demanding rich connectivity, deterministic timing, and scalable memory - targeting industrial automation, medical devices, and IoT edge nodes.

FAQ

What is the maximum operating temperature for STM32F427AGH6 in continuous 180 MHz operation?

The STM32F427AGH6 is rated for industrial temperature range (–40 °C to +85 °C) under all operating conditions. At 180 MHz with full peripheral activation, junction temperature must remain ≤125 °C; this requires ≤30 °C ambient with ≥2 cm² copper pour and 2 oz copper layers per datasheet thermal guidelines (Table 16, DS9405 Rev 13).

Does STM32F427AGH6 support hardware encryption acceleration?

No. The STM32F427AGH6 does not integrate a dedicated cryptographic accelerator (e.g., AES, SHA, PKA). It relies on software libraries (STM32Cube HAL + mbed TLS) for encryption; however, its true RNG provides FIPS-140-2 compliant entropy for key derivation and secure boot seeding.

Can the USB OTG HS interface operate without an external ULPI PHY?

No. USB OTG HS requires an external ULPI-compliant PHY (e.g., SMSC USB334x, Microchip USB3320) connected to PH4–PH11. The on-chip HS PHY is not present; only full-speed PHY is integrated on PA11/PA12. HS functionality is disabled if ULPI PHY is absent or misconfigured.

How many independent clock domains does the STM32F427AGH6 support for peripheral isolation?

The device supports three primary clock domains: APB1 (≤45 MHz), APB2 (≤90 MHz), and AHB (≤180 MHz), each with independent prescalers and enable controls. Additionally, dedicated clocks exist for USB OTG FS (48 MHz), USB OTG HS (120 MHz via PLL), Ethernet (25/50 MHz), and audio subsystems (PLLI2S/PLLSAI), enabling precise peripheral power and timing isolation.