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STMicroelectronics STM32F427ZIT6TR

Name: STM32F427ZIT6TR
Brand: STMicroelectronics
SKU: STM32F427ZIT6TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32F427ZIT6TR

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 144-LQFP

Datasheet:: STM32F427ZIT6TR.pdf

Description:: IC MCU 32BIT 2MB FLASH 144LQFP

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Product details

Overview

STM32F427ZIT6TR 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 requiring real-time control, graphics rendering, and multi-interface connectivity - such as industrial HMIs and networked medical devices.

For engineers reviewing the STM32F427ZIT6TR datasheet, STM32F427ZIT6TR pinout, STM32F427ZIT6TR application, or STM32F427ZIT6TR equivalent, key selection considerations include its dual USB OTG capability, IEEE 1588v2–enabled Ethernet MAC, ART Accelerator™ for zero-wait-state flash execution, and Chrom-ART™ DMA2D for hardware-accelerated 2D graphics composition.

Technical Context

This MCU integrates an Adaptive Real-time Accelerator (ART Accelerator™) that enables deterministic 0-wait-state execution from flash at 180 MHz, alongside a Memory Protection Unit (MPU) and dual-bank flash supporting read-while-write. Its clock system includes four PLLs (main, audio, SAI, and dedicated Ethernet PLL), enabling independent domain clocking for USB HS, Ethernet, audio, and display subsystems.

The device implements a multi-AHB bus matrix with eight masters and six slaves, supporting concurrent access to flash, SRAM, peripherals, and external memory via the Flexible Memory Controller (FMC). Its 168-pin LQFP package supports up to 166 5 V-tolerant I/Os, with dedicated routing for DCMI (54 MB/s), SDIO, CAN 2.0B, and dual SPI/I2S audio interfaces.

Key Specifications

Parameter	Value and Actual Design Meaning
CPU Core	Arm Cortex-M4 with FPU, 180 MHz max frequency, 225 DMIPS performance - enables real-time DSP and floating-point control loops without external coprocessor.
Memory	2 MB dual-bank flash (read-while-write), 256 KB + 4 KB SRAM including 64 KB CCM - supports firmware updates over-the-air and low-latency data buffering for sensor fusion.
Connectivity	USB 2.0 HS/FS OTG with ULPI & on-chip PHY, 10/100 Ethernet MAC with IEEE 1588v2 hardware timestamping - enables time-synchronized industrial networking and host/device dual-role USB applications.
Graphics	LCD-TFT controller (up to 4096×2048, 83 MHz pixel clock) + Chrom-ART Accelerator™ (DMA2D) - accelerates bitmap blending, image rotation, and ARGB8888→RGB565 conversion in GUI rendering pipelines.
Analog	Three 12-bit ADCs (2.4 MSPS each, 7.2 MSPS in triple interleaved mode), two 12-bit DACs - supports high-speed motor current sensing and precision waveform generation.
Timers & I/O	Up to 17 timers (including two 32-bit advanced-control timers), 168 I/Os (166 5 V-tolerant), 21 communication interfaces - provides flexible PWM generation, quadrature encoder input, and simultaneous multi-protocol peripheral interfacing.

Pinout & Package

LQFP144 (20 × 20 mm, 0.5 mm pitch) package with 144 pins; RoHS-compliant ECOPACK2 finish. Pinout validated per STMicroelectronics DS9405 Rev 13, Section 4 "Pinouts and pin description".

Pin/Terminal	Circuit Role	Design Meaning
VDD, VDDA, VDDIO2	Power supply inputs	Separate analog (VDDA), core (VDD), and I/O (VDDIO2) rails enable noise isolation for ADC/DAC and mixed-signal stability.
PA0–PA15, PB0–PB15, etc.	General-purpose I/O banks	168 total I/Os across GPIO ports A–K; most support 5 V tolerance, interrupt capability, and multiple alternate functions (e.g., TIMx_CHy, USARTx_TX).
PH0/PH1	HSE oscillator inputs	4–26 MHz crystal connection for high-precision system clock; supports automatic calibration and fail-safe switching to internal RC.
PA11/PA12	USB FS D+/D−	Dedicated full-speed USB transceiver pins with integrated pull-ups; require no external PHY for FS device/host operation.
PA13/PA14	SWDIO/SWCLK	Two-pin Serial Wire Debug interface - enables non-intrusive debugging and programming without JTAG overhead.
PC10/PC11/PC12	SDIO CLK/CMD/D0–D3	4-bit SDIO interface supporting SD/MMC cards up to UHS-I speeds; integrated DMA reduces CPU load during bulk transfers.
PD0/PD1	OSC_IN/OSC_OUT	32.768 kHz RTC crystal oscillator terminals - provide sub-second accuracy for calendar and wake-up timing in low-power modes.
PF0–PF15	FMC address/data bus	External memory interface signals for NOR/PSRAM/SDRAM; supports 32-bit data bus and asynchronous burst reads/writes.

Key Features

Feature	Design Value
ART Accelerator™	Eliminates flash wait states at 180 MHz, reducing instruction fetch latency and enabling deterministic real-time response in control-critical tasks.
Chrom-ART Accelerator™ (DMA2D)	Offloads 2D graphics operations (copy, blend, format conversion) from CPU, cutting GUI rendering time by >70% in typical HMI use cases.
Dual USB OTG controllers	Independent full-speed and high-speed USB PHYs allow simultaneous device/host roles - e.g., USB printer host + USB storage device on same board.
IEEE 1588v2 Ethernet MAC	Hardware timestamping with nanosecond resolution enables precise time synchronization in industrial automation and power grid monitoring systems.
Triple-interleaved ADC	7.2 MSPS aggregate sampling rate across three 12-bit ADCs - supports simultaneous multi-phase motor current acquisition with <100 ns inter-channel skew.

Applications

Industrial HMI

Networked Medical Device

Use Scenario: Touchscreen-based operator interface for PLC-controlled machinery with real-time alarm logging and trend visualization.

IC Role / Device Role / Timing Role: Primary application processor managing TFT-LCD display, capacitive touch controller, Ethernet backhaul, and local USB diagnostics port.

Use Value: Chrom-ART Accelerator™ renders smooth vector graphics at 60 fps while CPU handles Modbus TCP stack and safety logic - no external GPU required.

Use Scenario: Portable ultrasound machine requiring synchronized analog front-end sampling, image processing, and DICOM-over-Ethernet transmission.

IC Role / Device Role / Timing Role: Central controller coordinating 12-bit ADC sampling, DMA-driven FFT computation, JPEG compression, and IEEE 1588v2–timed DICOM packet transmission.

Use Value: Triple-interleaved ADC captures RF echo data at 7.2 MSPS; Ethernet MAC timestamping ensures traceable image acquisition timing per FDA 21 CFR Part 11.

Smart Energy Gateway

Automated Test Equipment

Use Scenario: DIN-rail-mounted gateway aggregating data from smart meters (via RS-485/M-Bus) and transmitting to cloud via Ethernet or USB cellular modem.

IC Role / Device Role / Timing Role: Protocol translation hub running multiple UARTs, CAN 2.0B for legacy fieldbus, and dual USB OTG for firmware update and modem tethering.

Use Value: 21 communication interfaces eliminate need for external bridge ICs; 2 MB flash stores multiple regional metering protocol stacks and secure boot firmware.

Use Scenario: Benchtop instrument performing automated calibration of sensors using programmable voltage/current sources and precision measurement.

IC Role / Device Role / Timing Role: Precision timing and signal generation engine driving 12-bit DAC outputs, capturing ADC results, and synchronizing GPIO-triggered test sequences.

Use Value: Two independent 12-bit DACs generate calibrated reference waveforms; 17 timers provide sub-microsecond trigger alignment across stimulus and capture channels.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32F429ZIT6	Same core, memory, and peripherals but adds LCD-TFT controller with LTDC and Chrom-ART - not present in STM32F427ZIT6TR.	Required for direct RGB/TFT panel driving; unnecessary if display output is handled externally (e.g., via FMC-connected display controller).	Select STM32F429ZIT6 only when native parallel RGB interface and hardware layer composition are needed.
STM32F767ZIT6	Higher-performance Cortex-M7 core (216 MHz), double-precision FPU, L1 cache, and enhanced ART Accelerator - but lacks IEEE 1588v2 Ethernet MAC and has different pin compatibility.	Better suited for intensive DSP or Linux-capable applications; incompatible pinout prevents drop-in replacement.	Choose STM32F767ZIT6 for compute-bound tasks where Ethernet timestamping is delegated to external PHY or omitted.

Compared with STM32F429ZIT6, the STM32F427ZIT6TR omits the LCD-TFT controller but retains identical Ethernet, USB, and analog capabilities - making it optimal for non-display network edge nodes. Versus STM32F767ZIT6, it trades raw CPU throughput for proven IEEE 1588v2 integration and pin-compatible migration path within the F4 family.

Availability

STM32F427ZIT6TR is available at Aetrix Electronics and suitable for industrial HMIs, networked medical devices, smart energy gateways, and automated test equipment requiring stable component supply across long-lifecycle deployments.

Supply support for STM32F427ZIT6TR 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-grade components since 1987.

The STM32F4 series targets high-performance embedded applications demanding real-time responsiveness, rich connectivity, and graphics acceleration - specifically engineered for industrial control, medical instrumentation, and IoT edge gateways.

FAQ

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

The STM32F427ZIT6TR achieves 180 MHz maximum CPU frequency using its main PLL driven by the HSE (4–26 MHz crystal) or HSI (16 MHz RC). The Adaptive Real-time Accelerator (ART Accelerator™) eliminates flash wait states, enabling deterministic zero-wait-state execution. Voltage regulation must be configured for VDD ≥ 2.7 V to sustain this frequency per DS9405 Section 6.3.1.

Does this MCU support hardware encryption or secure boot?

No, the STM32F427ZIT6TR does not integrate hardware cryptographic accelerators (AES, SHA, PKA) or tamper-detection circuitry. Secure boot relies on software-implemented signature verification in user flash. For certified security, ST recommends migrating to STM32L5 or STM32H5 series, which include ARM TrustZone® and dedicated crypto processors.

Can the Ethernet MAC operate without an external PHY?

No - the STM32F427ZIT6TR includes only a Media Access Controller (MAC); it requires an external PHY chip (e.g., LAN8742A or DP83848) connected via MII or RMII interface. The MAC supports IEEE 1588v2 timestamping in hardware, but physical layer signaling, auto-negotiation, and link management are handled by the external PHY.

What is the purpose of the CCM (Core Coupled Memory) and how is it used?

The 64 KB CCM SRAM is tightly coupled to the Cortex-M4 core and accessible only by the CPU (not by DMA), making it ideal for time-critical code and data - such as interrupt service routines, stack buffers, or real-time control variables. It operates at full CPU speed with zero wait states, ensuring deterministic latency for safety-critical tasks like motor commutation or PID loop execution.

STM32F427ZIT6TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 144-LQFP

Series:: STM32F4

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Verified

Core Processor:: ARM® Cortex®-M4

Core Size:: 32-Bit Single-Core

Speed:: 180MHz

Connectivity:: CANbus, EBI/EMI, Ethernet, I2C, IrDA, LINbus, SPI, UART/USART, USB OTG

Peripherals:: Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT

Number of I/O:: 114

Program Memory Size:: 2MB (2M x 8)

Program Memory Type:: FLASH

EEPROM Size:: -

RAM Size:: 256K x 8

Voltage - Supply (Vcc/Vdd):: 1.8V ~ 3.6V

Data Converters:: A/D 24x12b; D/A 2x12b

Oscillator Type:: Internal

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

STM32F427ZIT6TR FAQ

1.How can I place an order for STM32F427ZIT6TR through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32F427ZIT6TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for STM32F427ZIT6TR reliable?

The price and inventory of STM32F427ZIT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F427ZIT6TR is usually 5 days.

3.What payment methods are accepted for STM32F427ZIT6TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F427ZIT6TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32F427ZIT6TR?

STM32F427ZIT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32F427ZIT6TR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for STM32F427ZIT6TR?

For technical support, including STM32F427ZIT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F427ZIT6TR requirements.

6.How does Aetrix verify that STM32F427ZIT6TR is sourced from the original manufacturer or authorized distributors?

All STM32F427ZIT6TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32F427ZIT6TR meets industry standards.

7.What is the process for return or replacement of STM32F427ZIT6TR?

All STM32F427ZIT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32F427ZIT6TR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The STM32F427ZIT6TR part is unused and in its original packaging.

Return procedure for STM32F427ZIT6TR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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