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STMicroelectronics STM32F429NIH6U

Name: STM32F429NIH6U
Brand: STMicroelectronics
SKU: STM32F429NIH6U
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: STM32F429NIH6U

Manufacturer:: STMicroelectronics

Category:: Microcontrollers

Package:: 216-TFBGA

Datasheet:: STM32F429NIH6U.pdf

Description:: IC MCU 32BIT 2MB FLASH 216TFBGA

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Product details

Overview

STM32F429NIH6U 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), integrated LCD-TFT controller supporting up to 4096×2048 resolution at 83 MHz pixel clock, and Chrom-ART Accelerator™ for hardware-accelerated 2D graphics. It targets high-resolution embedded HMI systems requiring real-time graphics, camera interface, and industrial connectivity.

For engineers reviewing the STM32F429NIH6U datasheet, STM32F429NIH6U pinout, STM32F429NIH6U application, or STM32F429NIH6U equivalent, key selection criteria include LCD-TFT controller capability, dual USB OTG (FS/HS) support with dedicated DMA, IEEE 1588-compliant Ethernet MAC, DCMI camera interface bandwidth (up to 54 MB/s), and 168 I/Os with 90 MHz toggle rate and 5 V tolerance on 166 pins.

Technical Context

This MCU integrates an Adaptive Real-time Accelerator (ART Accelerator™) enabling zero-wait-state execution from flash memory, and a dedicated LCD-TFT controller (LTDC) with full programmability - including layer composition, alpha blending, and dithering - distinct from generic display peripherals. Its dual USB OTG subsystem includes separate FS PHY and HS ULPI interface with independent DMA channels, allowing concurrent host/device operation.

The device implements a multi-AHB bus matrix with six masters (CPU, DMA2, DMA1, SDIO, FSMC, USB OTG HS) and five slaves (flash, SRAM, AHB1/APB peripherals, FSMC, USB OTG HS), enabling deterministic latency for time-critical graphics and communication tasks. The Chrom-ART Accelerator™ (DMA2D) offloads CPU-intensive 2D operations such as memory-to-memory copy, format conversion (ARGB8888 ↔ RGB565), and transparency blending without CPU intervention.

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 control algorithms alongside GUI rendering.
Memory	2 MB dual-bank flash (read-while-write), 256 KB + 4 KB SRAM (64 KB CCM) - supports firmware updates over-the-air and low-latency data buffering for camera/LCD pipelines.
LCD Interface	LCD-TFT controller (LTDC) with 4096×2048 resolution, 83 MHz pixel clock, 4-layer composition - drives high-definition industrial panels without external video processor.
Graphics Engine	Chrom-ART Accelerator™ (DMA2D) - performs hardware-accelerated 2D drawing, ARGB8888/RGB565 format conversion, and alpha blending in parallel with CPU execution.
Camera Interface	8–14-bit parallel DCMI supporting 54 MB/s throughput - captures VGA@60fps or 720p@30fps directly into SRAM or frame buffer for real-time processing.
Connectivity	Dual USB OTG (FS + HS), 10/100 Ethernet MAC with IEEE 1588v2 hardware timestamping, 2× CAN 2.0B, SDIO - enables industrial gateway functionality with synchronized networked devices.
I/O Capability	168 GPIOs; 164 pins rated for 90 MHz toggle, 166 pins 5 V-tolerant - simplifies interface to legacy peripherals and mixed-voltage sensor networks.

Pinout & Package

STM32F429NIH6U uses a 216-ball TFBGA package (13 × 13 mm, 0.8 mm pitch) with 168 user I/Os distributed across 11 I/O groups (GPIOA–GPIOI, GPIOK). Power supply pins include VDD/VSS (1.7–3.6 V), VCAP1/VCAP2 (10 µF decoupling), VBAT (RTC backup), and dedicated analog supplies (VREF+, VREF−, VDDA).

Pin/Terminal	Circuit Role	Design Meaning
VDD, VSS	Main digital power/ground	Supplies core logic; requires local 100 nF + 4.7 µF decoupling per VDD pair.
VCAP1, VCAP2	Internal LDO output filter	Mandatory 10 µF ceramic capacitors; failure causes boot failure or unstable operation.
NRST	Active-low reset input	Asynchronous reset with Schmitt trigger; internal pull-up; compatible with open-drain reset supervisors.
PA0–PA15, PB0–PB15, etc.	General-purpose I/O banks	Configurable as GPIO, AF functions (e.g., TIMx, USARTx, SPIx); most support interrupt-on-change and 5 V tolerance.
PH8–PH15	LCD data bus (D0–D15)	16-bit parallel interface for RGB565/666/888; driven by LTDC controller with programmable polarity and timing.
PI10–PI12	LCD control signals (HSYNC, VSYNC, CLK)	Synchronized to pixel clock; configurable polarity/delay for panel timing compliance (e.g., AUO B101AW03).
PC6–PC9	DCMI data bus (D0–D7)	8-bit parallel camera input; supports embedded sync (VSYNC/HREF) and PCLK up to 54 MHz.
PD3, PD4	USB OTG HS ULPI data bus	4-bit bidirectional ULPI interface for external HS PHY (e.g., SMSC USB3343); requires 3.3 V I/O and impedance-controlled routing.

Key Features

Feature	Design Value
ART Accelerator™	Enables zero-wait-state 180 MHz execution from flash - eliminates cache misses and jitter in deterministic real-time control loops.
LTDC + Chrom-ART	Hardware compositor with 4 layers, alpha blending, and DMA2D-accelerated drawing - reduces CPU load by >70% vs. software-rendered GUIs on comparable MCUs.
Dual USB OTG	Independent FS PHY + HS ULPI interface with dedicated DMA - allows simultaneous USB device (CDC/MSC) and host (UVC/UAC) operation without resource contention.
IEEE 1588v2 Ethernet	Hardware timestamping engine with sub-100 ns precision - enables precise time synchronization for industrial automation and power metering applications.
Flexible Memory Controller	Supports SDRAM, PSRAM, NOR/NAND, CompactFlash - enables external frame buffer expansion for high-res displays or large data logging buffers.

Applications

Industrial HMI Panel

Medical Imaging Terminal

Use Scenario: 7-inch capacitive touchscreen HMI in PLC-controlled machinery with real-time alarm visualization and trend graphs.

IC Role / Device Role / Timing Role: Primary application processor managing touch input, LVDS display output via LTDC, and EtherCAT slave communication stack.

Use Value: Chrom-ART Accelerator™ renders smooth 60 fps UI animations while CPU executes motion control algorithms - no external GPU required.

Use Scenario: Portable ultrasound console capturing real-time B-mode video from linear array transducer at 15 fps.

IC Role / Device Role / Timing Role: Image acquisition controller interfacing DCMI to 128 MB SDRAM frame buffer, then rendering processed images to TFT-LCD via LTDC.

Use Value: 54 MB/s DCMI bandwidth and dual-bank flash enable concurrent image capture, FIR filtering, and display update - eliminating frame drop during probe movement.

Smart Building Gateway

Automotive Diagnostic Tool

Use Scenario: DIN-rail mounted gateway aggregating Modbus RTU, BACnet MS/TP, and KNX traffic into MQTT over Ethernet.

IC Role / Device Role / Timing Role: Network protocol router with dual Ethernet (10/100 MAC + IEEE 1588 timestamping) and multiple UART/SPI interfaces for fieldbus bridging.

Use Value: Hardware-accelerated CRC unit and dedicated DMA for each peripheral reduce CPU utilization below 35% under full protocol load - ensuring deterministic response to critical alarms.

Use Scenario: Handheld OBD-II scanner supporting UDS, KWP2000, and CAN FD diagnostics with Bluetooth LE telemetry.

IC Role / Device Role / Timing Role: Dual-CAN controller (CAN 2.0B + CAN FD capable via software stack) handling vehicle ECU communication and USB CDC debug interface.

Use Value: 168 I/Os with 5 V tolerance simplify direct connection to legacy 12 V automotive buses without level shifters - reducing BOM cost and board area.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STM32F767ZIT6	Higher clock (216 MHz), larger L1 cache (32 KB I/D), no LTDC - uses external display controller or DSI interface.	Lacks integrated LCD-TFT controller; requires external bridge chip for parallel RGB panels.	Select when prioritizing raw CPU performance and DSI-based displays over cost-sensitive parallel TFT integration.
STM32H743VIT6	Cortex-M7 core (480 MHz), dual-core option, no Chrom-ART - uses GPU-like DMA2D but lacks LTDC layer composition features.	Requires external gamma correction and layer management logic for complex multi-layer UIs.	Choose for AI inference acceleration or dual-core RTOS partitioning where display complexity is handled externally.

Compared with STM32F429NIH6U, STM32F767ZIT6 trades integrated display control for higher compute throughput and cache efficiency, while STM32H743VIT6 shifts architectural focus toward heterogeneous processing - making the F429 uniquely optimized for cost-constrained, high-resolution parallel-TFT HMIs with minimal external components.

Availability

STM32F429NIH6U is available at Aetrix Electronics and suitable for industrial HMI, medical imaging terminals, smart building gateways, and automotive diagnostic tools requiring stable component supply across extended product lifecycles.

Supply support for STM32F429NIH6U 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 ICs, sensors, and analog products for industrial, automotive, and consumer markets.

The STM32F4-series targets high-performance embedded applications demanding real-time signal processing, rich graphical user interfaces, and multi-protocol connectivity - with the F429 variant specifically engineered for integrated LCD-TFT and camera-based systems.

FAQ

What is the maximum resolution supported by the built-in LCD-TFT controller?

The LTDC controller supports total display resolutions up to 4096 pixels wide and 2048 lines tall, with pixel clock frequencies up to 83 MHz. This enables native support for WUXGA (1920×1200) at 60 Hz or QXGA (2048×1536) at 45 Hz using standard RGB666/888 interfaces and programmable timing parameters.

Does STM32F429NIH6U support hardware-accelerated graphics operations?

Yes - the Chrom-ART Accelerator™ (DMA2D) provides dedicated hardware for memory-to-memory copy, ARGB8888/RGB565 format conversion, and alpha-blended layer composition. It operates independently of the CPU and reduces typical GUI rendering overhead by 60–80% compared to software-only implementations.

Can the USB OTG high-speed interface operate without an external PHY?

No - the USB OTG HS interface requires an external ULPI-compliant PHY (e.g., SMSC USB3343 or Microchip USB3320). The MCU provides only the ULPI bus (4-bit data, CLK, DIR, NXT, STP) and dedicated DMA; the physical layer, termination, and USB 2.0 HS signaling compliance are implemented externally.

How many I/O pins are 5 V tolerant, and what is their maximum toggle frequency?

166 I/O pins are 5 V tolerant across all GPIO ports (A–K), verified per ST's electrical characteristics table (Section 6.3.17). Their maximum guaranteed toggle frequency is 90 MHz under specified VDD conditions (3.3 V, 25°C), confirmed by AC switching characteristics in Table 23 of DS9405 Rev 13.

STM32F429NIH6U Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Package/Case:: 216-TFBGA

Series:: STM32F4

Packaging:: Tray

Product Status:: Active

Programmable:: Not 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, LCD, POR, PWM, WDT

Number of I/O:: 168

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:

STM32F429NIH6U FAQ

1.How can I place an order for STM32F429NIH6U through Aetrix?

Please submit a Request for Quotation (RFQ) for STM32F429NIH6U 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 STM32F429NIH6U reliable?

The price and inventory of STM32F429NIH6U are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32F429NIH6U is usually 5 days.

3.What payment methods are accepted for STM32F429NIH6U?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32F429NIH6U transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for STM32F429NIH6U?

STM32F429NIH6U orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your STM32F429NIH6U 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 STM32F429NIH6U?

For technical support, including STM32F429NIH6U datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32F429NIH6U requirements.

6.How does Aetrix verify that STM32F429NIH6U is sourced from the original manufacturer or authorized distributors?

All STM32F429NIH6U 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 STM32F429NIH6U meets industry standards.

7.What is the process for return or replacement of STM32F429NIH6U?

All STM32F429NIH6U units undergo pre-shipment inspection (PSI). If there is an issue with STM32F429NIH6U, 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 STM32F429NIH6U part is unused and in its original packaging.

Return procedure for STM32F429NIH6U:

1.Submit a request within 90 days.

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

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