STMicroelectronics STM32F427IGT6

Overview

STM32F427IGT6 from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 180 MHz (225 DMIPS), featuring 1 MB flash, 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, motor control gateways, and networked medical devices requiring real-time processing and rich peripheral integration.

For engineers reviewing the STM32F427IGT6 datasheet, STM32F427IGT6 pinout, STM32F427IGT6 application, or STM32F427IGT6 equivalent, key selection criteria include its 17-timer suite (including advanced-control TIM1/TIM8), triple 12-bit ADCs (7.2 MSPS interleaved), LCD-TFT controller support (up to 4096×2048), and 168 I/Os with 5 V tolerance - all in LQFP176 package.

Technical Context

The STM32F427IGT6 implements an Arm Cortex-M4 core with hardware FPU and Adaptive Real-Time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 180 MHz. Its memory subsystem includes dual-bank flash (read-while-write), CCM SRAM for time-critical data, and flexible external memory controller supporting SDRAM, NOR, and NAND.

Peripheral architecture features dedicated DMA channels for high-bandwidth interfaces: dual USB OTG (one with on-chip HS PHY + ULPI), 10/100 Ethernet MAC with IEEE 1588v2 hardware timestamping, and parallel camera interface (DCMI) capable of 54 MB/s - all synchronized via multi-AHB bus matrix and nested vectored interrupt controller (NVIC).

Key Specifications

Pinout & Package

LQFP176 package: 176-pin quad flat pack with exposed thermal pad, 0.5 mm pitch, RoHS-compliant ECOPACK2 finish. Pin 1 marked by dot; thermal pad soldered to PCB ground plane for enhanced thermal 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 STM32F429IGT6, the STM32F427IGT6 omits the LCD-TFT controller - reducing BOM cost and firmware overhead where display is external. Versus STM32F469IGT6, it retains dual CAN and Ethernet MAC but lacks MIPI-DSI and hardware crypto accelerators, making it optimal for industrial networking over secure display-centric designs.

Availability

STM32F427IGT6 is available at Aetrix Electronics and suitable for industrial HMI gateways, networked medical devices, motor control systems, and smart building controllers requiring stable component supply across long-lifecycle production programs.

Supply support for STM32F427IGT6 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.

The STM32F4-series targets high-performance embedded applications demanding real-time processing, rich connectivity, and graphical user interfaces - designed specifically for industrial automation, medical equipment, and IoT edge nodes.

FAQ

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

The STM32F427IGT6 achieves 180 MHz maximum CPU frequency using its internal PLL with HSE (4–26 MHz crystal) or HSI (16 MHz RC) as source. The ART Accelerator™ enables zero-wait-state execution from flash memory at this speed, verified under 1.7–3.6 V supply and ambient temperature range (–40°C to +85°C) per DS9405 Rev 13 Section 6.3.1.

Does STM32F427IGT6 support external SDRAM, and what interface is used?

Yes - it supports external SDRAM up to 256 MB via the Flexible Memory Controller (FMC) with 16-bit data bus and standard SDRAM command protocol. The FMC provides dedicated control signals (RAS/CAS/WE/CS) and supports auto-refresh, self-refresh, and burst modes as defined in Section 3.9 and Table 26 of DS9405 Rev 13.

How many independent ADCs does it have, and what is their combined sampling capability?

It integrates three independent 12-bit ADCs (ADC1/2/3), each with up to 16 channels. In triple interleaved mode, they achieve 7.2 MSPS aggregate sampling rate with hardware synchronization and shared DMA channel - confirmed in Section 3.38 and Table 21 of the datasheet.

Is the LQFP176 package RoHS-compliant and lead-free?

Yes - the STM32F427IGT6 in LQFP176 package is ECOPACK2 compliant, meaning it meets RoHS Directive 2011/65/EU and is fully lead-free, halogen-free, and antimony-free. This is specified in Section 7.5 and the device marking table (Section 7.1) of DS9405 Rev 13.