STMicroelectronics STM32F732IET6

Overview

STM32F732IET6 from STMicroelectronics is a high-performance Arm® Cortex®-M7 32-bit microcontroller with FPU, delivering 462 DMIPS at 216 MHz, featuring 512 KB Flash, 256+16+4 KB SRAM (including TCM and backup RAM), USB OTG HS/FS, three 12-bit ADCs (up to 7.2 MSPS in triple interleaved mode), two 12-bit DACs, and one CAN 2.0B interface - deployed in industrial motor control systems requiring deterministic real-time response and integrated connectivity.

For engineers reviewing the STM32F732IET6 datasheet, STM32F732IET6 pinout, STM32F732IET6 application, or STM32F732IET6 equivalent, key selection considerations include its dual-mode Quad-SPI interface for external code/data expansion, ART Accelerator + L1 cache enabling zero-wait-state execution from Flash, and 140 I/Os with 138 5 V-tolerant pins for mixed-voltage system interfacing.

Technical Context

The STM32F732IET6 implements an Arm Cortex-M7 core with tightly coupled memory (TCM) architecture: 64 KB data TCM RAM for time-critical variables and 16 KB instruction TCM RAM for latency-sensitive routines, both accessible at full 216 MHz CPU frequency. Its adaptive real-time accelerator (ART) includes 8 KB instruction and 8 KB data caches, eliminating wait states during Flash execution when enabled.

It integrates a flexible external memory controller (FMC) supporting NOR/NAND/PSRAM/SDRAM, dual serial audio interfaces (SAIs), two SDMMC hosts, and a hardware AES-128/256 accelerator - all coordinated via AXI/AHB bus matrix with DMA support across 16 streams and multiple FIFO configurations.

Key Specifications

Pinout & Package

LQFP100 package (14 × 14 mm, 0.5 mm pitch) with exposed thermal pad; 100 leads, standard quad flat configuration compliant with JEDEC MO-137.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance Cortex-M7 microcontroller applications.

Compared with STM32F733IET6, the STM32F732IET6 omits the integrated USB HS PHY but retains identical CPU performance, memory map, and peripheral count - making it ideal for designs using external HS PHY or relying solely on FS. Against STM32H743VIT6, it trades dual-core flexibility and expanded memory for lower power, smaller footprint, and reduced licensing complexity in single-threaded real-time systems.

Availability

STM32F732IET6 is available at Aetrix Electronics and suitable for industrial motor control, programmable logic controllers, human-machine interfaces, and IIoT edge gateways requiring stable component supply across extended product lifecycles.

Supply support for STM32F732IET6 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 STM32F7 series targets high-end embedded applications demanding real-time determinism, rich connectivity, and security - specifically engineered for industrial automation, medical equipment, and advanced consumer electronics where Cortex-M7 performance and peripheral integration are essential.

FAQ

What is the maximum operating frequency and corresponding performance metric of the STM32F732IET6?

The STM32F732IET6 operates at a maximum CPU frequency of 216 MHz, achieving 462 DMIPS measured under Dhrystone 2.1 benchmark conditions. This performance level is sustained through the ART Accelerator and L1 cache, which eliminate wait states during Flash execution and ensure deterministic timing for real-time control tasks.

Does the STM32F732IET6 support external memory expansion, and what types are compatible?

Yes, it integrates a Flexible Memory Controller (FMC) supporting external NOR, NAND, PSRAM, and SDRAM/LPSDR SDRAM with up to 32-bit data bus width. Timing parameters are fully programmable, enabling reliable interfacing with common industrial memory components such as Micron MT48LC16M16A2 or ISSI IS42S16400J.

How many analog-to-digital converters does the STM32F732IET6 include, and what is their combined sampling capability?

The device integrates three independent 12-bit ADCs, each capable of 2.4 MSPS conversion rate. In triple interleaved mode, they achieve a combined sampling rate of 7.2 MSPS with synchronized start triggers - enabling simultaneous acquisition of motor phase currents, DC-link voltage, and temperature sensor readings within a single control cycle.

What low-power modes are available, and what is the lowest achievable current consumption?

The STM32F732IET6 supports Sleep, Stop, and Standby modes. In Standby mode with RTC and backup SRAM active, typical current consumption is 1.7 µA (max 5 µA) when powered from VBAT. This mode retains RTC calendar, 32×32-bit backup registers, and 4 KB backup SRAM while disabling all clocks and regulators.