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HomeProductsIntegrated Circuits (ICs)Embedded - MicrocontrollersSTM32F732IET6
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STM32F732IET6 - STMicroelectronics

Manufacturer Part Number
STM32F732IET6
Manufacturer
STMicroelectronics
Allelco Part Number
98D-STM32F732IET6
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
49,476 pcs available, New & Original
Parts Description
IC MCU 32BIT 512KB FLASH 176LQFP
Package
176-LQFP (24x24)
Data sheet
STM32F732IET6.pdf

PCN Packaging

2.73KHz.pdf

PCN Assembly/Origin

2.73KHz.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 49476
  • Unit Price: $11.636
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $11.636 $11.64
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

STM32F732IET6 Tech Specifications
STMicroelectronics - STM32F732IET6 technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics - STM32F732IET6

Product Attribute Attribute Value
Manufacturer STMicroelectronics
Voltage - Supply (Vcc/Vdd) 1.7V ~ 3.6V
Supplier Device Package 176-LQFP (24x24)
Speed 216MHz
Series STM32F7
RAM Size 256K x 8
Program Memory Type FLASH
Program Memory Size 512KB (512K x 8)
Peripherals Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Package / Case 176-LQFP
Package Tray
Product Attribute Attribute Value
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Number of I/O 140
Mounting Type Surface Mount
EEPROM Size -
Data Converters A/D 24x12b; D/A 2x12b
Core Size 32-Bit Single-Core
Core Processor ARM® Cortex®-M7
Connectivity CANbus, EBI/EMI, I²C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, UART/USART, USB
Base Product Number STM32F732

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 3 (168 Hours)
REACH Status REACH Unaffected
ECCN 5A992C
HTSUS 8542.31.0001

Frequently Asked Questions(FAQ)

What is the maximum operating frequency and core architecture of the STM32F732IET6 microcontroller, and how does this impact real-time processing performance in industrial control applications?
The STM32F732IET6 features a 32-bit ARM® Cortex®-M7 core running at up to 216MHz, enabling high-throughput signal processing and deterministic response times essential for industrial automation. This clock speed allows execution of complex algorithms—such as motor control loops or digital filter banks—within tight timing budgets, with instruction throughput up to two cycles per clock due to the dual-issue pipeline. For example, a PID loop requiring 500 instructions can complete in under 2.3 microseconds, supporting high-resolution sensor feedback systems.
How does the 512KB Flash memory size compare to the RAM size in the STM32F732IET6, and what are the implications for firmware complexity and data buffering in embedded systems?
The STM32F732IET6 provides 512KB of Flash program memory and 32KB of SRAM (256K x 8), resulting in a code-to-data ratio of approximately 16:1. While sufficient for many mid-complexity applications, large lookup tables or runtime buffers may require external memory expansion. For instance, a full-color image buffer at 640x480 with 16-bit color would consume ~600KB, exceeding internal RAM. Developers must optimize data structures or use QSPI-connected flash to avoid bottlenecks, especially during DMA-intensive transfers.
Can the STM32F732IET6 support simultaneous communication via USB, CANbus, and multiple SPI peripherals without bus contention or timing conflicts?
Yes, the STM32F732IET6 includes dedicated hardware interfaces including one USB OTG FS/HS, one CAN 2.0B controller, and up to five SPI/I2S interfaces, all independently clocked and managed by the AHB and APB buses. With proper DMA configuration, these peripherals can operate concurrently; for example, USB bulk transfers can share bandwidth with SPI-driven sensor arrays while CAN handles safety-critical messages. However, careful attention to interrupt prioritization and bus arbitration is required to maintain latency guarantees under load.
What voltage range does the STM32F732IET6 support, and how does it affect power supply design when interfacing with sensors operating at different logic levels?
The STM32F732IET6 operates from 1.7V to 3.6V, allowing direct compatibility with both 3.3V and lower-voltage sensor domains without level shifters. This flexibility simplifies power architecture in battery-powered or mixed-voltage systems. However, analog peripherals like the 24-channel 12-bit ADC require careful decoupling and reference stability, as input ranges must be within VDD_A (typically 2.0V–3.6V). Designers should ensure analog supplies are clean and isolated from digital noise to maintain conversion accuracy.
How does the STM32F732IET6 handle brown-out detection and reset functionality, and what role does it play in ensuring reliable operation in automotive or rugged environments?
The device integrates advanced power management features including programmable brown-out reset (BOR) thresholds and power-on reset (POR), which monitor VDD and trigger system recovery if voltage drops below safe operating limits. In automotive applications where transient dips are common, setting BOR to Level 2 (approximately 2.9V) prevents erratic behavior during cold starts. Combined with an internal voltage regulator, this ensures stable core operation even when peripherals draw peak currents, reducing risk of soft failures.
Is it possible to execute code directly from external QSPI memory using the STM32F732IET6, and what are the performance trade-offs compared to internal Flash?
The STM32F732IET6 supports XIP (execute-in-place) from external QSPI NOR flash via its QUADSPI peripheral, enabling code execution from off-chip memory. This frees up internal Flash but introduces latency due to memory access overhead—typically 3–5 cycles per instruction versus 1 cycle from internal Flash. At 216MHz, this results in a theoretical 20–30% performance penalty. For non-real-time tasks, this trade-off enables larger firmware images, but time-critical routines should reside in internal Flash or SRAM.
How many GPIO pins does the STM32F732IET6 provide, and how are they distributed across available alternate functions for flexible I/O mapping?
The STM32F732IET6 offers 140 general-purpose I/Os spread across 176-pin LQFP package, with each pin supporting multiple alternate functions such as UART, I2C, PWM, or SAI. This extensive remapping capability allows designers to optimize pin usage for compact layouts. However, certain peripherals share resources (e.g., TIM1 and TIM8 cannot run simultaneously), so configuration must be planned early. Tools like STM32CubeMX help visualize conflicts and assign optimal mappings based on application requirements.
What is the maximum sampling rate achievable with the integrated 24-channel ADC in the STM32F732IET6, and how does oversampling enhance measurement precision?
The STM32F732IET6’s 12-bit ADC achieves up to 3.6Msps (million samples per second) in single-conversion mode per channel, though total throughput depends on scan configuration. When sampling multiple channels sequentially, effective resolution can be improved through oversampling and averaging—for example, accumulating 16 samples yields ~14-bit equivalent precision. This technique is valuable in precision sensing applications like current monitoring or thermocouple reading, where noise reduction outweighs speed requirements.
How does the STM32F732IET6 compare to the STM32F746IG in terms of Flash size and peripheral integration for motor control applications?
While both belong to the STM32F7 series, the STM32F732IET6 has 512KB Flash and 32KB SRAM, whereas the STM32F746IG offers 1MB Flash and 320KB SRAM. The F746 also includes additional Ethernet MAC and LCD-TFT controller, making it better suited for display-rich HMI applications. However, for high-performance motor control using FOC (Field-Oriented Control), both devices leverage the same Cortex-M7 core and floating-point unit. The key difference lies in memory capacity: larger code libraries (e.g., ARM CMSIS-DSP) may exceed 512KB, necessitating the F746 variant.
Can the STM32F732IET6 drive a standard 8-bit parallel interface LCD without external controllers, and what limitations apply?
No, the STM32F732IET6 lacks a dedicated LCD controller. While it can emulate parallel signals using GPIO toggling and DMA, this approach consumes significant CPU cycles and limits refresh rates to tens of Hz, insufficient for responsive displays. Instead, designers typically pair the MCU with an external TFT driver like the ILI9341, using SPI or 8-bit parallel mode via GPIO multiplexing. This adds component count but enables smooth video-like updates at acceptable frame rates.
What is the recommended decoupling strategy for the STM32F732IET6 to minimize electromagnetic interference and ensure stable operation near 216MHz?
Each VDD/VSS pair on the 176-LQFP package requires individual 100nF ceramic capacitors placed as close as possible (<2mm) to the pin, supplemented by a bulk 10µF tantalum or ceramic capacitor near the board edge. High-speed digital nets like USB D+/D− and QSPI lines need impedance-controlled routing and termination resistors where appropriate. Poor decoupling at 216MHz can cause voltage droop that corrupts Flash writes or triggers spurious resets, particularly during ADC conversions or DMA bursts.
Does the STM32F732IET6 support secure firmware updates over-the-air (OTA), and what hardware security features are available to protect intellectual property?
The device includes built-in read protection (RDP), write protection (WRP), and option bytes that lock specific memory regions. While not a full TPM-class security module, it supports basic anti-tamper measures such as CRC checks and bootloader authentication. For OTA updates, developers must implement cryptographic verification (e.g., ECDSA) using software libraries, as no dedicated crypto accelerator is present—though future revisions may add more robust IP protection mechanisms.

Parts with Similar Specifications

The three parts on the right have similar specifications to STMicroelectronics STM32F732IET6

Product Attribute STM32F732RET6 STM32F732VET6TR STM32F732VET6 STM32F733IET6
Part Number STM32F732RET6 STM32F732VET6TR STM32F732VET6 STM32F733IET6
Manufacturer STMicroelectronics STMicroelectronics STMicroelectronics STMicroelectronics
Connectivity - - - -
Program Memory Size - - - -
Core Processor - - - -
Voltage - Supply (Vcc/Vdd) - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Program Memory Type - - - -
Data Converters - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Core Size - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Speed - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Oscillator Type - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Number of I/O - - - -
RAM Size - - - -
Peripherals - - - -
EEPROM Size - - - -

STM32F732IET6 Datasheet PDF

Download STM32F732IET6 pdf datasheets and STMicroelectronics documentation for STM32F732IET6 - STMicroelectronics.

PCN Packaging
2.73KHz.pdf
PCN Assembly/Origin
2.73KHz.pdf
HTML Datasheet
STM32F7 Series Brochure.pdf

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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Brazil 7
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New Zealand 5
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0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
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STM32F732IET6 Image

STM32F732IET6

STMicroelectronics
98D-STM32F732IET6

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