STMicroelectronics STM32F732RET6

Overview

STM32F732RET6 from STMicroelectronics is a high-performance Arm® Cortex®-M7 32-bit microcontroller with FPU, operating at up to 216 MHz (462 DMIPS), featuring 512 KB Flash, 256+16+4 KB SRAM, USB OTG HS/FS, three 12-bit ADCs (2.4 MSPS), two 12-bit DACs, and CAN 2.0B - deployed in industrial motor control systems requiring deterministic real-time response and multi-interface connectivity.

For engineers reviewing the STM32F732RET6 datasheet, STM32F732RET6 pinout, STM32F732RET6 application, or STM32F732RET6 equivalent, key selection criteria include its dual USB OTG capability (HS + FS), ART Accelerator-enabled zero-wait-state Flash execution, TCM RAM partitioning for time-critical routines, and 140 I/Os with 108 MHz toggle rate and 5 V tolerance - critical for mixed-voltage industrial HMI and gateway designs.

Technical Context

The STM32F732RET6 implements an adaptive real-time accelerator (ART) with 8 KB instruction and 8 KB data L1 cache, enabling deterministic 0-wait-state execution from embedded Flash or external memories. Its memory subsystem includes 256 KB data TCM RAM, 16 KB instruction TCM RAM, and 4 KB backup SRAM retained in Standby mode with VBAT support.

It integrates dual USB OTG controllers: one full-speed with on-chip PHY, and one high-speed/full-speed with dedicated DMA and dual PHY (on-chip FS + HS or ULPI). The peripheral set includes three independent 12-bit ADCs supporting up to 7.2 MSPS in triple interleaved mode, two 12-bit DACs, and a bxCAN 2.0B controller with programmable bit timing and automatic retransmission.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad. Pin count: 64 leads. Compatible with standard PCB assembly processes and industrial-grade thermal cycling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F733RET6, the F732RET6 omits the integrated USB HS PHY but retains identical CPU, memory, and peripheral configuration - making it ideal for ULPI-based HS designs where PHY flexibility and cost control are priorities. Against STM32H743VIT6, the F732 offers lower power, smaller footprint, and simpler toolchain support for pure M7 real-time workloads without dual-core overhead.

Availability

STM32F732RET6 is available at Aetrix Electronics and suitable for industrial motor control, human-machine interface (HMI), and programmable logic controller (PLC) gateway applications requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.

Supply support for STM32F732RET6 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, specializing in microcontrollers, power management, sensors, and automotive ICs with ISO 9001 and IATF 16949 certified manufacturing.

The STM32F7 series targets high-end embedded applications demanding real-time determinism, rich connectivity, and advanced signal processing - designed specifically for industrial automation, medical devices, and audio/video edge nodes.

FAQ

What is the maximum operating frequency and corresponding performance metric of the STM32F732RET6?

The STM32F732RET6 operates at a maximum CPU frequency of 216 MHz, delivering 462 DMIPS (Dhrystone 2.1) at 2.14 DMIPS/MHz. This performance is sustained using the ART Accelerator and L1 cache to eliminate Flash wait states, and is validated under full industrial temperature range (–40°C to +85°C) with VDD = 3.3 V.

Does the STM32F732RET6 support USB High-Speed device/host functionality natively?

No - the STM32F732RET6 integrates a USB OTG HS controller with dedicated DMA and supports high-speed operation, but requires an external ULPI PHY or discrete HS transceiver. Unlike the STM32F733xx variant, it does not include an on-chip USB HS PHY, making it suitable for designs where PHY selection or cost optimization is critical.

How is the SRAM organized, and what is the purpose of TCM RAM partitions?

The STM32F732RET6 provides 256 KB data TCM RAM, 16 KB instruction TCM RAM, and 4 KB backup SRAM. TCM RAM is tightly coupled to the Cortex-M7 core with zero-latency access, reserved for time-critical variables (data TCM) and ISRs/boot code (instruction TCM), ensuring deterministic execution unaffected by cache misses or bus arbitration.

Which packages are available for the STM32F732RET6, and what is the correct pin count for the 'RET6' suffix?

The 'RET6' suffix denotes the LQFP64 package: 64-pin, 10 × 10 mm, 0.5 mm pitch, with exposed thermal pad. While the broader STM32F732xx family offers UFBGA144, LQFP100, and other variants, RET6 exclusively refers to this LQFP64 configuration - confirmed in ST's official ordering information table (DS11854 Rev 7, Table 1).