STMicroelectronics STM32F427AIH6TR

Overview

STM32F427AIH6TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating at up to 180 MHz (225 DMIPS), featuring 2 MB flash memory, 256+4 KB SRAM (including 64 KB CCM), and integrated USB OTG HS/FS, 10/100 Ethernet MAC, and dual CAN 2.0B interfaces. It targets high-performance embedded applications such as industrial HMI, motor control gateways, and networked medical devices requiring real-time processing and rich peripheral integration.

For engineers reviewing the STM32F427AIH6TR datasheet, STM32F427AIH6TR pinout, STM32F427AIH6TR application, or STM32F427AIH6TR equivalent, key selection considerations include its 180 MHz CPU clock, dual-CAN + Ethernet + USB OTG HS connectivity, LCD-TFT controller support (though not active on F427xx), and UFBGA169 (7 × 7 mm) package with 169 balls and 5 V-tolerant I/Os.

Technical Context

The STM32F427AIH6TR implements an Arm Cortex-M4 core with floating-point unit and DSP instructions, coupled with ST's Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 180 MHz. Its memory subsystem includes two-bank flash supporting read-while-write, 256 KB main SRAM plus 4 KB backup SRAM, and 64 KB CCM RAM tightly coupled to the CPU for deterministic interrupt latency.

Peripheral architecture features a multi-AHB bus matrix, 16-stream DMA controller with FIFOs, and dedicated hardware blocks including IEEE 1588v2-compliant Ethernet MAC, USB 2.0 HS/FS OTG controllers with ULPI interface, and three 12-bit ADCs (up to 7.2 MSPS in triple interleaved mode). The device supports full-speed and high-speed USB device/host/OTG operation with dedicated DMA channels and on-chip PHYs.

Key Specifications

Pinout & Package

STM32F427AIH6TR uses the UFBGA169 (A0YV) package: 7 mm × 7 mm body, 0.5 mm ball pitch, 169 I/O balls arranged in 13 × 13 grid with central thermal pad. Pinout conforms to STM32F427xx series standard ball mapping per datasheet Table 10.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32F429ZIT6, STM32F427AIH6TR removes LCD-TFT controller to reduce cost and power in non-display applications; compared with STM32F469NIH6, it retains Ethernet MAC and dual CAN but omits MIPI DSI and crypto engines-making it optimal for industrial networking nodes where display and security acceleration are secondary.

Availability

STM32F427AIH6TR is available at Aetrix Electronics and suitable for industrial motor control gateways, networked medical diagnostic devices, smart building HVAC controllers, and programmable logic controller (PLC) I/O modules requiring stable component supply across extended production lifecycles.

Supply support for STM32F427AIH6TR 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 automotive semiconductors with emphasis on energy efficiency and industrial reliability.

The STM32F4-series is engineered for high-performance real-time embedded applications demanding rich connectivity (Ethernet, USB, CAN), analog precision (multi-ADC, DAC), and deterministic execution-targeting industrial automation, medical instrumentation, and motor control systems.

FAQ

What is the maximum operating frequency and associated performance metric of the STM32F427AIH6TR?

The STM32F427AIH6TR operates at a maximum CPU frequency of 180 MHz, delivering 225 DMIPS (Dhrystone 2.1) at 1.25 DMIPS/MHz. This performance is sustained with zero-wait-state execution from flash memory thanks to the ART Accelerator™, and verified under full industrial temperature range (–40°C to +85°C) with 1.7–3.6 V supply.

Does the STM32F427AIH6TR support hardware-accelerated graphics or LCD-TFT display driving?

No. Unlike the STM32F429xx series, the STM32F427AIH6TR does not integrate an LCD-TFT controller or Chrom-ART Accelerator™ (DMA2D). Its peripheral set omits LTDC and related display timing logic. Graphics rendering must be implemented in software or offloaded to external display controllers.

How many independent CAN 2.0B interfaces does the STM32F427AIH6TR provide, and what is their functional scope?

The STM32F427AIH6TR integrates two fully independent bxCAN 2.0B controllers, each supporting standard and extended identifiers, programmable bit timing, automatic retransmission, and loopback/self-test modes. Both controllers operate concurrently and can be assigned to separate CAN networks-for example, one for drive communication and another for diagnostics or safety monitoring.

What package type and thermal characteristics define the STM32F427AIH6TR's mechanical and thermal behavior?

The STM32F427AIH6TR uses the UFBGA169 (A0YV) package: 7 mm × 7 mm body, 0.5 mm ball pitch, with an exposed thermal pad. Its thermal resistance is θ_JA = 31.5°C/W (JEDEC Std 51-7, 4-layer board), and maximum junction temperature is 105°C. Recommended PCB layout includes solid thermal vias under the exposed pad connected to internal ground plane for reliable operation at full 180 MHz clock.