STM32F429IET6 - 180MHz Cortex-M4 512KB MCU | STMicroelectronics
MPN: STM32F429IET6 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $9.5877 | $9.59 |
| 10 | $9.5877 | $95.88 |
| 100 | $9.5877 | $958.77 |
| 500 | $9.5877 | $4,793.85 |
| 1,000 | $9.5877 | $9,587.70 |
STM32F429IET6 Overview
A microcontroller is a programmable system-on-chip that executes firmware, coordinates digital interfaces, samples analog signals, and controls external hardware. The STM32F4 family sits within the hierarchy microcontroller, embedded processor, semiconductor, and electronic component. Its Cortex-M4 core is designed for real-time embedded workloads where efficient instruction execution, deterministic peripherals, and integrated connectivity are more important than a host operating system.
Key verified features include a 32-bit Cortex-M4 core with FPU, DSP instructions, operation up to 180 MHz, 512 KB of Flash, 225 DMIPS, an MPU, and zero-wait-state Flash execution using the ART Accelerator. The family datasheet also identifies USB high-speed and full-speed support, Ethernet, 17 timers, three ADCs, up to 20 communication interfaces, camera capability, and an LCD-TFT controller. These resources support demanding industrial controls, communications equipment, graphical instruments, and connected embedded systems.
The core can execute 225 DMIPS according to the verified family data, while the FPU accelerates floating-point calculations and DSP instructions support signal-processing workloads. The 512 KB target variant offers substantial firmware space for networking stacks, control algorithms, and application logic. Exact SRAM capacity, voltage limits, GPIO count, and detailed timing values are not provided in the supplied excerpts and therefore are not inferred here.
Typical uses include EtherCAT or industrial automation controllers, Ethernet-connected equipment, USB peripherals, camera-based inspection, TFT human-interface panels, and high-performance sensor-processing modules. The combination of Ethernet, USB, camera, LCD-TFT, and multiple serial interfaces allows consolidation of functions that might otherwise require several discrete components.
Designers must use the manufacturer pinout and electrical data before PCB layout because all 176 package pins must be assigned correctly and unused interfaces need suitable termination. Power, decoupling, clock, reset, boot, and signal-integrity decisions should follow the STM32F427xx and STM32F429xx family datasheet rather than generic MCU assumptions.
This product record consolidates verified distributor specifications, the official family datasheet, sourcing information, and practical integration guidance. It also distinguishes true same-package drop-in alternatives from merely similar MCUs, helping engineers avoid replacements that require firmware, board, or pin-function changes.
Drop-in alternatives for STM32F429IET6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with STM32F429IET6 (same form factor and footprint) — differing in Communication Interfaces, Flash Memory, Package, Memory Protection Unit, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
STM32F429IGT6
✅ Drop-In✓ In Stock
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View Datasheet →STM32F437IIT6
✅ Drop-In✓ In Stock
$11.84 / Unit
View Datasheet →STM32F407IET6
✅ Drop-In✓ In Stock
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View Datasheet →STM32F429IET6 Maximum Ratings & Electrical Characteristics
| Product Type | 32-bit ARM Cortex-M4 microcontroller |
| Maximum CPU Frequency | 180 MHz |
| Flash Memory | 512 KB (512K x 8) |
| CPU Core | ARM 32-bit Cortex-M4 with FPU |
| DSP Support | DSP instructions |
| Adaptive Real-Time Accelerator | ART Accelerator with 0-wait-state Flash execution |
| Computational Performance | 225 DMIPS; 1.25 DMIPS/MHz using Dhrystone 2.1 |
| Memory Protection Unit | MPU |
| Timer Count | 17 timers |
| ADC Count | 3 ADCs |
| Communication Interfaces | Up to 20 communication interfaces |
| USB Support | USB OTG high-speed and full-speed |
| Ethernet Support | Ethernet |
| Display Support | LCD-TFT controller |
| Camera Support | Camera interface |
| Package | 176-pin LQFP, 24 x 24 mm |
| Mounting Type | Surface mount |
| I2C Interface | 3-channel I2C |
| SPI Interface | 6-channel SPI |
STM32F429IET6 176-pin lqfp, 24 x 24 mm Pin Configuration Guide
Pin configuration for STM32F429IET6 (176-pin lqfp, 24 x 24 mm package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for STM32F429IET6.
Refer to the datasheet for full pin configuration.
Typical Applications
STM32F429IET6 is suitable for 7 applications: EtherCAT Industrial Control, USB Performer and Test Equipment, Camera-Based Inspection System, TFT Human-Machine Interface, High-Speed Sensor Processing, Connected Industrial Gateway, Audio-Control System.
EtherCAT Industrial Control
The STM32F429IET6 fits EtherCAT or industrial-control designs that require substantial real-time processing and extensive peripheral integration. Its verified 180 MHz Cortex-M4 core, 225 DMIPS performance, 512 KB of Flash, and Ethernet support provide a strong basis for motion logic, digital I/O handling, diagnostics, and communication stacks. The Ethernet-capable STM32F4 family is therefore suited to controllers connecting sensors, drives, and operator stations. Before schematic release, verify the target pinout, supported Ethernet MAC configuration, PHY interface, clock tree, isolation requirements, and firmware support. The practical benefit is integration: Ethernet, timers, ADCs, and serial interfaces are consolidated in one MCU, but industrial nodes still need careful power, grounding, surge protection, and differential-signal layout.
Recommended
USB Performer and Test Equipment
The STM32F429IET6 is appropriate for USB-connected instrumentation because the STM32F4 family supports USB OTG high-speed and full-speed while the target core runs up to 180 MHz. That processing headroom can coordinate data acquisition, protocol handling, user-interface updates, and real-time control more effectively than a basic low-speed microcontroller. USB traffic also makes the MCU suitable for analyzers, programmable test devices, and laboratory peripherals. The design must follow the exact USB data-pin assignment and transceiver requirements in the family datasheet. Layout attention is essential at high-speed USB: controlled impedance, continuous reference planes, minimized stubs, and correct connector launch geometry are essential for reliable signal integrity and EMC.
Recommended
Camera-Based Inspection System
The verified camera interface and 180 MHz Cortex-M4 performance make STM32F429IET6 candidates for compact image-acquisition and inspection control. The MCU can coordinate camera data, buffer transfers, exposure sequencing, trigger handling, and machine-control logic while the FPU and DSP instructions assist numerically intensive operations. Its three ADCs and broad communication-interface count also support analog sensing and sensor fusion. This does not mean the MCU performs unrestricted high-resolution image processing; frame size, compression, memory bandwidth, latency, and algorithm complexity must be evaluated against the target SRAM configuration. Camera-clock isolation, signal return paths, connector placement, and unused-signal handling should follow the reference design and family datasheet to avoid image corruption and EMC issues.
Recommended
TFT Human-Machine Interface
The STM32F429IET6 is well matched to an industrial TFT human-machine interface because the verified STM32F427xx and STM32F429xx family data includes an LCD-TFT controller, Ethernet, USB, and up to 20 communication interfaces. The Cortex-M4 core operates up to 180 MHz, supporting responsive touch handling, menu logic, communications, and machine-control tasks within one package. This can simplify the hardware architecture compared with separate display and communications controllers. Engineering validation must still confirm the target's LCD timing, bus width, memory requirements, pin multiplexing, display voltage levels, and backlight drive. For products with long update intervals, evaluate power-saving modes carefully because processing requirements and peripheral clock settings determine whether the MCU should remain continuously clocked.
Recommended
High-Speed Sensor Processing
The STM32F429IET6's Cortex-M4 FPU, DSP instructions, three ADCs, and 180 MHz clock make it suitable for real-time sensor processing outside basic GPIO control. Possible workloads include filtering, condition monitoring, vibration analysis, industrial signal conditioning, and closed-loop control. The FPU reduces the software burden of floating-point calculations, while DSP instructions support common multiply-accumulate operations. Performance depends on effective flash execution and the ART Accelerator, plus careful DMA and buffer management. Engineers should calculate acquisition, processing, and communications deadlines rather than assuming the 225 DMIPS figure represents usable application throughput. Analog filtering, reference stability, ADC sampling timing, grounding, and digital-analog partitioning are as important as CPU selection in this application.
Recommended
Connected Industrial Gateway
The STM32F429IET6 can serve as a protocol gateway or embedded communications controller because Ethernet, USB, and numerous serial interfaces coexist with 512 KB of program memory and high core performance. It is relevant to gateways that translate between service interfaces, collect equipment data, run local control functions, and provide status reporting. The MCU's multiple timers and ADCs also allow supervisory control tasks to coexist with communications. A practical design should partition protocols by deterministic execution time, use DMA for high-throughput transfers, and preserve service access for boot and recovery. Because 512 KB may constrain large protocol stacks, filesystem caching, TLS material, and application modules, measure the final binary size and RAM demand before committing to this density. Lifecycle and supply planning should match the industrial product duration.
Recommended
Audio-Control System
The STM32F429IET6's 180 MHz Cortex-M4 core, FPU, DSP instructions, three ADCs, and USB support fit digital audio control, monitoring, and signal-generation systems. It can process control logic, acquire analog monitoring signals, handle USB audio or configuration data, and supervise external converters or amplifiers. The FPU and DSP capability are more relevant here than raw clock speed because they improve implementation of filters and real-time arithmetic. Engineering teams must still confirm RAM, codec interfaces, supported sample rates, DMA channels, and low-latency clocking from the family documentation. Analog sections require short, quiet return paths and separation from switching and high-current outputs. Firmware should include overload protection and graceful degradation if audio timing or USB connectivity is interrupted.
Recommended
Recommended Products Summary
Engineering reference data for STM32F429IET6 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32F429IGT6 | STM32F437IIT6 | STM32F407IET6 |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 176-pin LQFP, 24 x 24 mm | 176-pin LQFP | 176-pin LQFP | 176-pin LQFP |
| Drop-In Verification | Target device | Same-package family comparison; full pin-level verification required | Same-package family comparison; full pin-level verification required | Same-package site-list comparison; full pin-level verification required |
Key Differentiators
- Lower Flash capacity than the same-package STM32F429IGT6 (vs STM32F429IGT6)
- Higher verified maximum clock than STM32F437IIT6 (vs STM32F437IIT6)
- Purposeful Flash-density choice within the same STM32F429 naming family (vs STM32F429IGT6)
Design Notes
Use the official STM32F427xx and STM32F429xx electrical requirements to determine supply voltage, regulator capacity, decoupling, and startup sequencing. The supplied excerpts do not include the target's complete voltage and current limits, so no regulator value should be inferred from generic STM32F4 designs. Place bulk and high-frequency decoupling close to supply pins, preserve clean return paths, and validate startup across temperature and peripheral-load conditions.
Assign all 176 LQFP pins against the official datasheet before routing. Separate Ethernet, USB, camera, and other high-speed interfaces from analog and switching nodes, maintain continuous reference planes, and avoid routing sensitive signals beneath noisy or high-current paths. Confirm each signal's alternate function and direction because package pin availability varies with firmware and peripheral configuration. Prototype timing and EMC results rather than relying only on schematic connectivity.
Do not treat an STM32F429, STM32F437, or STM32F407 part as a drop-in replacement merely because it is a Cortex-M4 in LQFP-176. Verify every pin, boot configuration, supply limit, debug connection, peripheral mapping, memory organization, and software device identifier. The cited alternatives differ in verified Flash capacity or maximum frequency, so firmware size, timing margins, and board assumptions must be reviewed before substitution.
Camera, USB, Ethernet, and TFT interfaces should follow the manufacturer's recommended topology and reference layouts. Keep impedance-controlled traces continuous, provide appropriate return paths, place termination at the correct end, and follow clock and data skew limits. The supplied data does not include target-specific rise-time or routing values, so consult the official family datasheet and selected transceiver documentation before fixing trace geometry or component values.
Compliance Information
The supplied search results identify the manufacturer and package but do not provide target-specific compliance declarations. No RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals claim has been inferred.
