STMicroelectronics STM32F405ZGT6W

Overview

STM32F405ZGT6W from STMicroelectronics is a 32-bit Arm® Cortex®-M4 microcontroller with FPU, operating up to 168 MHz (210 DMIPS), featuring 1 MB flash, 192+4 KB SRAM (including 64 KB CCM), dual CAN 2.0B interfaces, USB OTG HS/FS with dedicated DMA, and 10/100 Ethernet MAC with IEEE 1588v2 hardware support - deployed in industrial gateways requiring real-time connectivity and deterministic timing.

For engineers reviewing the STM32F405ZGT6W datasheet, STM32F405ZGT6W pinout, STM32F405ZGT6W application, or STM32F405ZGT6W equivalent, key selection criteria include Ethernet MAC + USB OTG HS coexistence, triple 12-bit ADCs (7.2 MSPS interleaved), camera interface (DCMI) bandwidth (54 MB/s), and WLCSP90 package thermal performance for space-constrained edge nodes.

Technical Context

The STM32F405ZGT6W integrates an Adaptive Real-time Accelerator (ART) enabling zero-wait-state execution from flash at 168 MHz, alongside a multi-AHB bus matrix for concurrent peripheral access. Its memory subsystem includes 64 KB core-coupled memory (CCM) for time-critical code/data and 512 bytes of OTP for secure boot configuration.

It implements dual USB controllers: OTG_FS with on-chip PHY and OTG_HS with ULPI interface and dedicated DMA, plus a full-duplex 10/100 Ethernet MAC supporting MII/RMII and IEEE 1588v2 timestamping - enabling simultaneous high-bandwidth wired communication without CPU overhead.

Key Specifications

Pinout & Package

STM32F405ZGT6W uses the WLCSP90 (Wafer-Level Chip-Scale Package) with 90 I/O balls in a 9×10 array, optimized for minimal PCB area and thermal efficiency in compact designs. Pin functions are defined per ball position in ST's official pinout table (DS8626 Rev 12, Section 4).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-performance ARM Cortex-M4 microcontroller applications.

Compared with STM32F407VGT6, the STM32F405ZGT6W trades prototyping convenience for 60% smaller footprint and integrated USB HS PHY support; versus STM32H743ZIT6, it delivers deterministic Ethernet + USB coexistence at lower power and BOM cost, without requiring external memory or PHY components.

Availability

STM32F405ZGT6W is available at Aetrix Electronics and suitable for industrial gateways, smart vision nodes, secure IoT endpoints, and audio-enabled HMIs requiring stable component supply across long-lifecycle deployments.

Supply support for STM32F405ZGT6W 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 ICs, sensors, and automotive-grade components since 1987.

The STM32F4 series targets high-performance real-time embedded applications demanding rich connectivity, analog integration, and deterministic execution - especially where Ethernet, USB, and multi-sensor fusion converge in space- and power-constrained environments.

FAQ

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

The STM32F405ZGT6W achieves 168 MHz via its Arm Cortex-M4 core with FPU and Adaptive Real-time Accelerator (ART), which eliminates flash wait states. It requires a 4–26 MHz HSE crystal or internal 16 MHz RC oscillator as input to the main PLL. Stable operation at this frequency mandates proper VCAP capacitor placement (2.2 µF each on VCAP_1/VCAP_2) and adherence to thermal limits specified in DS8626 Rev 12 Section 7.8.

Does STM32F405ZGT6W support USB High-Speed device mode without an external PHY?

Yes - the STM32F405ZGT6W integrates a USB 2.0 high-speed/full-speed OTG controller with on-chip full-speed PHY and ULPI interface. For HS operation, an external ULPI-compliant PHY (e.g., SMSC USB334x) is required; the on-chip PHY only supports FS. The ULPI interface operates at 60 MHz and handles all HS signaling, while the MCU manages link-layer protocols via dedicated DMA.

How many independent ADCs does it have, and what is their combined sampling capability?

The STM32F405ZGT6W integrates three independent 12-bit ADCs (ADC1–ADC3), each capable of 2.4 MSPS. In triple interleaved mode, they achieve 7.2 MSPS aggregate sampling rate with synchronized triggers - enabling simultaneous acquisition across up to 24 channels. This mode uses shared DMA and precise timing alignment, documented in Section 3.35 of DS8626 Rev 12.

What are the key thermal and packaging considerations for WLCSP90?

The WLCSP90 package (4.223 × 3.969 mm) has a thermal resistance θ_JA of 150°C/W (DS8626 Rev 12 Table 13). Successful thermal design requires soldering to a 4-layer PCB with ≥2 thermal vias under the die pad, copper pour on inner layers, and avoidance of large adjacent copper pours that impede convection. Reflow must follow JEDEC J-STD-020 profile for Class 3 moisture sensitivity level.