STMicroelectronics STM32F733IEK6

Overview

STM32F733IEK6 from STMicroelectronics is a 32-bit Arm® Cortex®-M7 microcontroller with FPU, operating at up to 216 MHz (462 DMIPS), featuring 512 KB Flash, 256+16+4 KB SRAM, dual USB OTG (FS/HS), three 12-bit ADCs (2.4 MSPS), two 12-bit DACs, and CAN 2.0B - deployed in industrial HMI, motor control gateways, and audio-enabled edge nodes.

For engineers reviewing the STM32F733IEK6 datasheet, STM32F733IEK6 pinout, STM32F733IEK6 application, or STM32F733IEK6 equivalent, key selection factors include its 216 MHz real-time performance with L1 cache, dual USB OTG PHY support (including HS with dedicated DMA), integrated AES-256 and TRNG for secure firmware updates, and 140 I/Os with 138 5 V-tolerant pins for mixed-voltage system interfacing.

Technical Context

The STM32F733IEK6 implements an Arm Cortex-M7 core with adaptive real-time accelerator (ART Accelerator) and 8 KB instruction + 8 KB data L1 cache, enabling zero-wait-state execution from Flash or external memory. Its AXI/AHB bus matrix supports concurrent high-bandwidth access across CPU, DMA, and peripherals including FMC, Quad-SPI, and dual SAI.

It integrates dual USB OTG controllers: one full-speed (OTG_FS) with on-chip PHY, and one high-speed/full-speed (OTG_HS) with dedicated DMA, on-chip FS PHY, and selectable HS PHY or ULPI interface - enabling simultaneous host/device roles and isochronous audio streaming via SAI+PLLI2S/PLLSAI.

Key Specifications

Pinout & Package

LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; 64-pin quad flat configuration optimized for cost-sensitive, space-constrained industrial control modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32H743VIT6, the STM32F733IEK6 delivers full USB HS functionality out-of-box with on-chip PHY, while offering lower BOM cost and smaller PCB area; versus STM32F767ZIT6, it provides identical CPU performance and USB/audio features in a compact 64-pin package, eliminating unused Ethernet and extra Flash overhead.

Availability

STM32F733IEK6 is available at Aetrix Electronics and suitable for industrial motor control gateways, secure edge telemetry nodes, and audio-enabled HMIs requiring stable component supply across multi-year production cycles.

Supply support for STM32F733IEK6 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The STM32F7 series targets high-end embedded applications demanding real-time determinism, rich connectivity, and hardware security - specifically engineered for industrial automation, medical devices, and advanced human-machine interfaces.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32F733IEK6 achieves 216 MHz via its Arm Cortex-M7 core with ART Accelerator and L1 cache (8 KB instruction + 8 KB data), enabling zero-wait-state execution from Flash or external memory. This frequency is sustained under full voltage (3.3 V) and ambient temperature (–40°C to 85°C), validated per DS11854 Rev 7 Section 6.3.1.

Does this MCU support USB High-Speed device mode without external components?

Yes - the STM32F733IEK6 integrates a full USB 2.0 high-speed PHY (480 Mbps) alongside dedicated DMA and on-chip full-speed PHY, allowing true HS device/host/OTG operation without external transceivers. This is confirmed in Section 3.30 and Table 48 of DS11854 Rev 7.

How many ADC channels are available and what is their effective sampling rate?

The device integrates three independent 12-bit ADCs, each capable of 2.4 MSPS. In triple interleaved mode, they achieve 7.2 MSPS aggregate throughput across up to 24 channels - verified in Section 3.34 and Table 24 of the datasheet, with timing constraints defined in Section 6.3.24.

What package type and pin count does STM32F733IEK6 use?

The STM32F733IEK6 uses the LQFP64 package (10 × 10 mm, 0.5 mm pitch) with 64 pins, as specified in Table 10 (pin definition) and Section 7.1 of DS11854 Rev 7. This package includes VCAP1/VCAP2 pins for voltage regulator decoupling and supports all core peripherals including USB OTG_FS/HS and CAN.