STMicroelectronics STM32F427VGT7

Overview

STM32F427VGT7 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, 10/100 Ethernet MAC, and dual CAN 2.0B interfaces. It targets high-performance embedded applications such as industrial gateways, motor control systems, and networked HMI controllers requiring real-time processing, connectivity, and graphics acceleration.

For engineers reviewing the STM32F427VGT7 datasheet, STM32F427VGT7 pinout, STM32F427VGT7 application, or STM32F427VGT7 equivalent, key selection considerations include its 100-pin LQFP package, 180 MHz CPU clock with ART Accelerator™, dual CAN + Ethernet + USB OTG HS support, LCD-TFT controller capability (shared with F429 series but disabled in F427), and 168 I/Os with 5 V tolerance - critical for mixed-voltage industrial designs.

Technical Context

The STM32F427VGT7 implements an Arm Cortex-M4 core with hardware FPU and DSP extensions, coupled with ST's Adaptive Real-Time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 180 MHz. Its memory subsystem includes dual-bank flash (1 MB), 256 KB main SRAM, 64 KB CCM RAM, and 4 KB battery-backed SRAM for RTC-critical data retention.

Peripherals are organized across multiple AHB/APB buses with a multi-layer AHB matrix; it integrates dedicated DMA channels for high-bandwidth interfaces including Ethernet MAC (IEEE 1588v2 hardware support), USB OTG HS (with ULPI interface and dedicated DMA), and DCMI (54 MB/s parallel camera input). The device lacks the LCD-TFT controller present in STM32F429xx - confirmed by ST's functional overview and peripheral count tables.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm) package with exposed thermal pad; RoHS-compliant and ECOPACK2 certified. Pin count and signal mapping align with STM32F427xx family specification (Table 10, DS9405 Rev 13).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F427VGT7, the STM32F429VIT6 adds display capability at identical pin count but removes Ethernet PHY integration, while the STM32H743VIT6 offers significantly higher performance and security features at the cost of increased complexity, power, and non-pin-compatible layout changes.

Availability

STM32F427VGT7 is available at Aetrix Electronics and suitable for industrial gateways, motor control systems, and networked HMI controllers requiring stable component supply across extended production lifecycles.

Supply support for STM32F427VGT7 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, specializing in microcontrollers, power management, sensors, and automotive ICs with strong industrial and embedded market focus.

The STM32F4-series targets high-performance real-time applications demanding DSP capability, rich connectivity, and graphics acceleration - designed specifically for industrial automation, medical devices, and advanced consumer electronics.

FAQ

Does STM32F427VGT7 support LCD-TFT display output?

No. Unlike the STM32F429xx series, the STM32F427VGT7 does not integrate an LCD-TFT controller (LTDC). This is explicitly stated in Section 3.10 of the datasheet ("LCD-TFT controller (available only on STM32F429xx)") and confirmed by peripheral count tables showing LTDC = 0 for F427xx. External display controllers or parallel RGB interfaces via FSMC must be used.

What is the maximum supported SDRAM density on the Flexible Memory Controller (FMC)?

The FMC supports up to 256 MB of SDRAM (16 MB × 16-bit) using the standard SDR/DDR1 interface, as defined by address/data bus width (A0–A12, D0–D15) and control signals (BA0/BA1, CAS, RAS, WE) in Section 3.9 and Table 11 of DS9405. LPSDR SDRAM is also supported with reduced power consumption for portable HMI applications.

Can STM32F427VGT7 operate with only the internal 16 MHz RC oscillator?

Yes - the internal 16 MHz factory-trimmed RC oscillator (±1% accuracy) can serve as system clock source, enabling basic operation without external crystal. However, USB OTG HS, Ethernet MAC, and precise RTC calibration require external oscillators (HSE or LSE); the internal RC alone is insufficient for full peripheral functionality per Section 3.14 and Table 39.

Is the STM32F427VGT7 pin-compatible with other STM32F427 variants in LQFP100?

Yes. All STM32F427xx devices in LQFP100 (e.g., STM32F427VGT6, STM32F427VET6) share identical pinout, electrical characteristics, and package dimensions per Section 7.2 and Table 10 of DS9405. Differences are limited to flash size, temperature grade, and speed grade - all fully backward-compatible at the hardware level.