STMicroelectronics STM32F405ZGT7

Overview

STM32F405ZGT7 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), USB OTG HS/FS, 10/100 Ethernet MAC with IEEE 1588v2 hardware support, and dual CAN 2.0B interfaces - deployed in industrial gateways requiring real-time connectivity, deterministic timing, and multi-protocol edge processing.

For engineers reviewing the STM32F405ZGT7 datasheet, STM32F405ZGT7 pinout, STM32F405ZGT7 application, or STM32F405ZGT7 equivalent, key selection criteria include Ethernet MAC + USB OTG HS coexistence, CCM RAM for latency-critical ISR execution, ART Accelerator-enabled zero-wait-state flash performance at 168 MHz, and 140 GPIOs with 5 V tolerance for mixed-voltage system interfacing.

Technical Context

The STM32F405ZGT7 integrates an Arm Cortex-M4 core with single-precision FPU and Adaptive Real-Time (ART) Accelerator, enabling deterministic 0-wait-state execution from flash at full 168 MHz - critical for hard real-time control loops. Its memory subsystem includes 64 KB of core-coupled memory (CCM) accessible only by CPU (no DMA), isolating time-critical data from bus contention.

Connectivity is architected for concurrent high-bandwidth peripherals: dedicated DMA channels for USB OTG HS (with ULPI interface), Ethernet MAC (MII/RMII), and SDIO; dual CAN controllers with programmable bit timing; and triple 12-bit ADCs supporting 7.2 MSPS in interleaved mode for synchronized multi-channel sampling.

Key Specifications

Pinout & Package

LQFP144 package with 0.5 mm pitch, 20 × 20 mm body, exposed thermal pad (EPAD) connected to VSS for enhanced thermal dissipation under continuous 168 MHz operation and Ethernet/USB HS activity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407ZGT6, the STM32F405ZGT7 adds extended temperature qualification without sacrificing performance or features; versus STM32H743ZIT6, it delivers proven real-time determinism and lower power at 168 MHz while avoiding M7-specific toolchain and validation complexity.

Availability

STM32F405ZGT7 is available at Aetrix Electronics and suitable for industrial gateways, edge controllers, vision hubs, and secure field gateways requiring stable component supply through 2030 and beyond.

Supply support for STM32F405ZGT7 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 components for industrial, automotive, and consumer markets.

The STM32F4 series targets high-performance real-time embedded applications requiring DSP capability, rich connectivity, and deterministic execution - optimized for industrial automation, motor control, and IoT edge nodes with multi-protocol convergence.

FAQ

What is the maximum operating junction temperature for STM32F405ZGT7?

The STM32F405ZGT7 is specified for operation up to +105°C ambient temperature in LQFP144 package with proper PCB thermal design (≥4 thermal vias under EPAD). Its absolute maximum junction temperature is 125°C, and thermal resistance θ_JA is 27.5°C/W per datasheet DS8626 Rev 12 Section 7.8 - sustained operation above 105°C ambient requires active cooling or derating.

Does STM32F405ZGT7 support USB OTG High-Speed in device mode?

No - USB OTG HS operates only in host mode on STM32F405ZGT7. The HS PHY and ULPI interface are host-only; device-mode operation is limited to Full-Speed (12 Mbps) via the integrated on-chip FS PHY on PA11/PA12. This is confirmed in Section 3.31 of DS8626 Rev 12 and Table 2 (peripheral counts).

How many independent CAN interfaces does STM32F405ZGT7 provide?

The STM32F405ZGT7 integrates two fully independent bxCAN 2.0B controllers (CAN1 and CAN2), each with its own message RAM, filter banks, and clock domain. Both support programmable bit timing, loopback/self-test modes, and up to 28 filter banks - enabling dual-bus redundancy or gateway bridging without external CAN controllers.

Is the CCM RAM accessible by DMA controllers?

No - the 64 KB CCM (core-coupled memory) is accessible exclusively by the Cortex-M4 CPU and cannot be addressed by any DMA channel. This architectural isolation ensures deterministic, zero-latency access for time-critical variables and interrupt stacks, as documented in Section 3.6 of DS8626 Rev 12.