STMicroelectronics STM32F427ZGT6

Overview

STM32F427ZGT6 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 controllers. It targets high-performance embedded applications such as industrial gateways, motor control HMI, and networked medical devices requiring real-time processing and rich peripheral integration.

For engineers reviewing the STM32F427ZGT6 datasheet, STM32F427ZGT6 pinout, STM32F427ZGT6 application, or STM32F427ZGT6 equivalent, key selection considerations include its 17-timer suite (including advanced-control TIM1/TIM8), triple 12-bit ADCs (7.2 MSPS in interleaved mode), LCD-TFT controller support (up to 4096×2048), and dual USB OTG with dedicated DMA - all in LQFP144 package with 144 pins and 5 V-tolerant I/Os.

Technical Context

The STM32F427ZGT6 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 (1 MB), 256 KB SRAM (64 KB CCM), and flexible external memory controller supporting SDRAM, NOR, and NAND.

Peripherals are organized across multiple AHB/APB buses with multi-layer AHB matrix arbitration. Key connectivity blocks include IEEE 1588v2-capable Ethernet MAC with MII/RMII, USB 2.0 HS/FS OTG with on-chip PHY and ULPI interface, and dual bxCAN controllers - all independently clocked and DMA-accessible for deterministic real-time operation.

Key Specifications

Pinout & Package

LQFP144 (20 × 20 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant and ECOPACK2 certified.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F429ZIT6, the STM32F427ZGT6 omits LTDC but retains identical connectivity and analog performance - ideal for Ethernet/CAN gateways where display is secondary. Versus STM32F469NIH6, it trades MIPI-DSI and JPEG for lower cost and power, better fitting deterministic control applications.

Availability

STM32F427ZGT6 is available at Aetrix Electronics and suitable for industrial gateways, motor control HMIs, medical imaging consoles, and networked test equipment requiring stable component supply across extended product lifecycles.

Supply support for STM32F427ZGT6 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 - optimized for industrial automation, medical devices, and IoT edge nodes.

FAQ

What is the maximum operating frequency and associated performance metric of the STM32F427ZGT6?

The STM32F427ZGT6 operates at up to 180 MHz with an integer performance rating of 225 DMIPS (Dhrystone 2.1). This is achieved using the Arm Cortex-M4 core with FPU and ART Accelerator™, which enables zero-wait-state execution from flash memory. The FPU supports single-precision floating-point operations essential for motor control algorithms and signal processing tasks.

Does the STM32F427ZGT6 support external SDRAM, and what interface is used?

Yes, the STM32F427ZGT6 supports external SDRAM via its Flexible Memory Controller (FMC), which provides a 32-bit data bus and dedicated control signals (CKE, CLK, CAS, RAS, WE, BA0–BA2). It supports standard SDR SDRAM and low-power SDRAM (LPDDR/PSRAM), enabling expansion beyond internal 256 KB SRAM for applications like frame buffering or large data logging.

How many USB interfaces does the STM32F427ZGT6 integrate, and what are their capabilities?

The STM32F427ZGT6 integrates two independent USB controllers: one full-speed (FS) OTG with on-chip PHY, and one high-speed/full-speed (HS/FS) OTG with dedicated DMA, on-chip FS PHY, and ULPI interface for external HS PHY. Both support device, host, and OTG roles, enabling simultaneous USB device enumeration and host-side mass storage access without CPU intervention.

What are the key differences between the STM32F427ZGT6 and STM32F429ZGT6?

The STM32F429ZGT6 adds an integrated LCD-TFT controller (LTDC) and Chrom-ART Accelerator™ (DMA2D), along with 2 MB flash versus 1 MB in the F427ZGT6. All other peripherals - including Ethernet MAC, dual CAN, USB OTG HS/FS, ADCs, timers, and I/O count - are functionally identical. The F427 variant is selected when display functionality is handled externally or not required.