STMicroelectronics STM32F733ZET6

Overview

STM32F733ZET6 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, dual USB OTG (FS/HS), three 12-bit ADCs (up to 7.2 MSPS in triple interleaved mode), and one CAN 2.0B interface - deployed in industrial motor control systems requiring deterministic real-time response and multi-interface connectivity.

For engineers reviewing the STM32F733ZET6 datasheet, STM32F733ZET6 pinout, STM32F733ZET6 application, or STM32F733ZET6 equivalent, key selection considerations include its 216 MHz Cortex-M7 core with L1 cache, USB HS/FS dual PHY support, 140 GPIOs (138 5 V-tolerant), and integrated AES-128/256 hardware accelerator for secure firmware updates.

Technical Context

The STM32F733ZET6 implements an adaptive real-time accelerator (ART Accelerator) with 8 KB instruction and 8 KB data caches, 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 audio interfaces.

It integrates dual USB OTG controllers: one full-speed with on-chip PHY, and one high-speed with dedicated DMA and dual PHY options (on-chip HS/FS or ULPI). The bxCAN controller operates in active 2.0B mode with programmable bit timing and automatic retransmission - critical for deterministic fieldbus communication in PLC edge nodes.

Key Specifications

Pinout & Package

LQFP144 (20 × 20 mm, 0.5 mm pitch) package with exposed thermal pad. Pin count: 144 leads; RoHS-compliant; rated for industrial temperature range (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F767ZIT6 and STM32H743ZIT6, the STM32F733ZET6 uniquely balances USB HS device capability, 512 KB Flash, and industrial I/O tolerance - making it optimal for cost-sensitive, USB-centric edge controllers where Ethernet or dual-core features are unnecessary.

Availability

STM32F733ZET6 is available at Aetrix Electronics and suitable for industrial motor control, human-machine interface, and secure firmware gateway applications requiring stable component supply and long-term manufacturing continuity.

Supply support for STM32F733ZET6 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, specializing in microcontrollers, power management, sensors, and automotive ICs - with over 40 years of industrial-grade product development.

The STM32F7-series targets high-end embedded applications demanding real-time performance, rich connectivity, and security - designed specifically for industrial automation, motor control, and advanced HMI platforms.

FAQ

What is the maximum operating frequency and associated power supply requirement?

The STM32F733ZET6 operates at up to 216 MHz with a core supply (VDD) of 1.7–3.6 V. At maximum frequency, it requires stable 1.2 V core voltage (regulated internally), and external 100 nF decoupling capacitors on VCAP1/VCAP2 pins per datasheet Section 6.3.2. Typical current consumption in Run mode at 216 MHz is 125 mA (regulator ON, code from Flash with ART enabled).

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

Yes - the STM32F733ZET6 integrates a dedicated USB OTG HS controller with on-chip high-speed PHY, enabling true USB 2.0 HS (480 Mbit/s) device operation without external transceivers. It also includes a separate full-speed OTG controller with on-chip FS PHY, allowing simultaneous FS and HS device roles.

How many ADC channels can be sampled simultaneously, and what is the effective throughput?

Three independent 12-bit ADCs support up to 24 total channels. In triple interleaved mode, they achieve 7.2 MSPS aggregate sampling rate with synchronized start triggers - delivering 2.4 MSPS per ADC while maintaining phase coherence across all three, critical for multi-sensor acquisition in motor control.

Is the LQFP144 package of STM32F733ZET6 pin-compatible with other STM32F7 series MCUs?

No - while the LQFP144 footprint is shared across several STM32F7 devices (e.g., STM32F767ZIT6), pin functions differ significantly due to peripheral mapping variations (e.g., USB HS PHY pins, FMC signals, SAI channels). Direct replacement requires PCB redesign and firmware adaptation per RM0410 reference manual Table 12 (AF mapping).