STMicroelectronics STM32F427ZIT7TR

Overview

STM32F427ZIT7TR from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 180 MHz (225 DMIPS), featuring 2 MB flash, 256+4 KB SRAM (including 64 KB CCM), USB OTG HS/FS, 10/100 Ethernet MAC, and LCD-TFT controller. 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 STM32F427ZIT7TR datasheet, STM32F427ZIT7TR pinout, STM32F427ZIT7TR application, or STM32F427ZIT7TR equivalent, key selection criteria include its dual USB OTG capability, IEEE 1588v2 Ethernet support, triple 12-bit ADCs (7.2 MSPS interleaved), Chrom-ART Accelerator™ for GUI rendering, and LQFP144 package with 168 I/Os - all validated in production-grade DS9405 Rev 13.

Technical Context

The device integrates an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash at 180 MHz, alongside a Memory Protection Unit (MPU) and dual-bank flash supporting read-while-write. Its multi-AHB bus matrix enables concurrent access to flash, SRAM, and peripherals without contention.

It implements two independent CAN 2.0B controllers, a dedicated DMA for Ethernet MAC and USB OTG HS, and a flexible external memory controller (FMC) supporting SDRAM, NOR, NAND, and PSRAM - critical for systems requiring local frame buffer or external program storage.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F429ZIT6, STM32F427ZIT7TR trades LCD-TFT capability for identical real-time control and connectivity at lower BOM cost; versus STM32H743ZIT6, it delivers proven M4 determinism and lower power at ~55% of the price point for non-AI applications.

Availability

STM32F427ZIT7TR is available at Aetrix Electronics and suitable for industrial HMI, networked motor control, and medical imaging front-ends requiring stable component supply across extended product lifecycles.

Supply support for STM32F427ZIT7TR 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.

This part belongs to the STM32F427xx mainstream high-performance line, designed for complex real-time embedded systems demanding rich connectivity, graphics support, and deterministic control - especially where Ethernet, USB OTG, and multi-sensor fusion converge.

FAQ

What is the maximum operating temperature range for STM32F427ZIT7TR?

The STM32F427ZIT7TR is rated for industrial temperature range: –40 °C to +105 °C ambient, verified per DS9405 Rev 13 Section 6.3.1. This rating applies to the LQFP144 package with ECOPACK2 finish and is validated under regulated voltage supply conditions (1.7–3.6 V).

Does STM32F427ZIT7TR support USB High-Speed device mode without an external PHY?

No. The STM32F427ZIT7TR integrates a full-speed USB transceiver (OTG_FS) but requires an external ULPI-capable PHY (e.g., SMSC USB3343) for USB High-Speed device or host operation. Its OTG_HS interface is strictly PHY-less and must be connected via ULPI bus.

How many independent CAN interfaces does this MCU provide?

The STM32F427ZIT7TR integrates two fully independent bxCAN 2.0B controllers (CAN1 and CAN2), each with its own message RAM, filter banks, and dedicated APB1 clock domain - enabling simultaneous operation on separate CAN buses without resource contention.

Is the 64 KB CCM (core coupled memory) accessible by DMA?

No. The 64 KB CCM SRAM is accessible only by the Cortex-M4 core (instruction and data bus); it is excluded from the AHB bus matrix and therefore not visible to DMA controllers. This design ensures deterministic, zero-latency access for time-critical code while preventing DMA-induced stalls.