STMicroelectronics STM32F732IEK6

Overview

STM32F732IEK6 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 HMI controllers requiring deterministic real-time response and multi-interface connectivity.

For engineers reviewing the STM32F732IEK6 datasheet, STM32F732IEK6 pinout, STM32F732IEK6 application, or STM32F732IEK6 equivalent, key selection considerations include its 216 MHz Cortex-M7 core with L1 cache, dual-mode Quad-SPI for external code/data expansion, hardware AES-128/256 acceleration, true RNG, and support for USB OTG HS with dedicated DMA - critical for secure, high-throughput embedded edge nodes.

Technical Context

The STM32F732IEK6 integrates an adaptive real-time accelerator (ART Accelerator) and 8 KB instruction + 8 KB data L1 cache to enable zero-wait-state execution from Flash or external memories. Its memory subsystem includes 256 KB data TCM RAM for time-critical variables and 16 KB instruction TCM RAM for latency-sensitive routines - essential for deterministic interrupt handling and real-time control loops.

It implements a full AXI-AHB bus matrix supporting concurrent access to Flash, SRAM, peripherals, and external memory via Flexible Memory Controller (FMC). The dual-mode Quad-SPI interface operates in memory-mapped or indirect mode, enabling seamless boot and XIP from external flash or PSRAM - directly supporting scalable firmware architectures without external address/data buses.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm) package with exposed thermal pad; 64-pin quad flat lead frame suitable for industrial PCB assembly and thermal management in enclosed enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F733IEK6, the STM32F732IEK6 omits the integrated USB HS PHY but retains identical CPU performance, memory, and peripheral count - making it ideal for designs using external ULPI PHY or limiting to full-speed USB. Against STM32H743VIK6, it trades raw compute headroom and safety features for lower cost, simpler power design, and proven qualification in volume industrial deployments.

Availability

STM32F732IEK6 is available at Aetrix Electronics and suitable for industrial motor control, secure edge gateways, human-machine interfaces, and medical diagnostic instruments requiring stable component supply across extended product lifecycles.

Supply support for STM32F732IEK6 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 analog products for industrial, automotive, and consumer markets.

The STM32F7-series targets high-end embedded applications demanding real-time performance, rich connectivity, and hardware security - specifically engineered for industrial automation, advanced HMI, and secure IoT edge nodes where deterministic latency and peripheral integration are critical.

FAQ

What is the maximum operating frequency and associated power supply range for STM32F732IEK6?

The STM32F732IEK6 operates at up to 216 MHz with a core supply voltage (VDD) of 1.7–3.6 V. At full speed, it requires VDD ≥ 2.7 V per electrical characteristics (Section 6.3.1); operation below 2.7 V limits maximum frequency to 180 MHz or lower depending on temperature and process variation.

Does STM32F732IEK6 support external SDRAM, and what interface is used?

Yes, STM32F732IEK6 supports external SDRAM via its Flexible Memory Controller (FMC) with 16-bit data bus capability. It implements standard SDRAM command sequences and timing control, compatible with common IS42S16400J and MT48LC4M32B2 chips - validated in ST's AN4821 application note.

How many independent 12-bit ADCs does STM32F732IEK6 integrate, and what is their maximum aggregate sampling rate?

It integrates three independent 12-bit ADCs (ADC1, ADC2, ADC3), each capable of 2.4 MSPS. In triple interleaved mode with synchronized triggers, they achieve an aggregate sampling rate of 7.2 MSPS across up to 24 channels - confirmed in Section 3.34 and Table 24 of DS11854 Rev 7.

Is the STM32F732IEK6 pin-compatible with other packages in the STM32F732xx family?

No - the STM32F732IEK6 uses the LQFP64 package (10 × 10 mm), while other variants like STM32F732VEH6 use LQFP100 and STM32F732ZGT6 use LQFP144. Pinouts differ significantly across packages; migration requires PCB redesign and signal reassignment per Table 10 in DS11854 Rev 7.