STMicroelectronics STM32F405VGT6J

Overview

STM32F405VGT6J 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 protocol bridging and multi-interface edge processing.

For engineers reviewing the STM32F405VGT6J datasheet, STM32F405VGT6J pinout, STM32F405VGT6J application, or STM32F405VGT6J equivalent, key selection criteria include Ethernet + USB HS coexistence, triple 12-bit ADCs (7.2 MSPS interleaved), camera interface timing (54 MB/s), ART Accelerator-enabled zero-wait-state flash execution, and 138 5 V-tolerant I/Os for mixed-voltage system interfacing.

Technical Context

The STM32F405VGT6J integrates an Arm Cortex-M4 core with single-precision FPU and DSP instructions, coupled with ST's Adaptive Real-Time (ART) Accelerator enabling deterministic 0-wait-state execution from flash at 168 MHz. Its memory subsystem includes 1 MB of embedded flash, 192 KB main SRAM, 4 KB backup SRAM, and 64 KB CCM RAM tightly coupled to the CPU for low-latency data access.

Peripheral architecture features a multi-AHB bus matrix supporting concurrent high-bandwidth transfers: dedicated DMA channels for Ethernet MAC, USB OTG HS, SDIO, and DCMI; dual CAN controllers with time-triggered communication support; and a flexible static memory controller (FSMC) with NAND/NOR/PSRAM/CompactFlash™ compatibility - enabling direct connection to external displays, NOR flash boot devices, and industrial memory modules.

Key Specifications

Pinout & Package

LQFP100 (14 × 14 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant ECOPACK2 construction; 100-pin layout optimized for high-density industrial PCB routing with dedicated VCAP_1/VCAP_2 decoupling pins adjacent to VDD/VSS pairs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F407VGT6, the STM32F405VGT6J trades integrated Ethernet PHY for greater signal integrity control and lower thermal density; versus STM32H743VIT6, it offers proven maturity, simpler power sequencing, and full USB HS PHY integration - making it optimal for cost-sensitive, thermally constrained industrial gateways needing dual-CAN + Ethernet coexistence.

Availability

STM32F405VGT6J is available at Aetrix Electronics and suitable for industrial protocol gateways, edge vision nodes, secure IoT controllers, and multi-interface HMI platforms requiring stable component supply across extended product lifecycles.

Supply support for STM32F405VGT6J 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 vertical manufacturing and broad industrial qualification coverage.

The STM32F4 series targets high-performance embedded applications demanding real-time responsiveness, rich connectivity, and deterministic execution - designed specifically for industrial automation, motor control, medical instrumentation, and networked edge devices.

FAQ

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

The STM32F405VGT6J achieves 168 MHz maximum CPU frequency using its Arm Cortex-M4 core with FPU, enabled by ST's Adaptive Real-Time (ART) Accelerator. This logic block pre-fetches and caches instructions from flash, eliminating wait states even at full speed. The system clock derives from the main PLL, which accepts input from HSE (4–26 MHz crystal) or HSI (16 MHz RC), and must be configured with appropriate flash wait states and voltage scaling (VOS range 1) to sustain 168 MHz operation.

Does this part support USB High-Speed device/host functionality without external components?

Yes - the STM32F405VGT6J integrates a full USB 2.0 High-Speed (480 Mbps) PHY with ULPI interface and dedicated DMA controller. It supports HS device/host/OTG roles without requiring external transceivers. However, external ULPI PHY components (e.g., SMSC USB334x) are needed only if using ULPI mode instead of the internal PHY; the internal PHY is enabled by default and requires only standard USB connector routing and ESD protection.

How many independent CAN interfaces does it provide, and what protocol versions are supported?

The STM32F405VGT6J provides two fully independent bxCAN controllers (CAN1 and CAN2), each compliant with ISO 11898-1:2015 (CAN 2.0B Active). Both support standard (11-bit) and extended (29-bit) identifiers, programmable bit timing, automatic retransmission, and loopback/self-test modes. Neither supports CAN FD; for FD capability, STM32H7 or STM32G4 series parts are required.

What is the role of the CCM (core-coupled memory), and how is it accessed?

The 64 KB CCM (core-coupled memory) is a tightly coupled SRAM block accessible exclusively by the Cortex-M4 CPU - not by DMA or other bus masters. It provides zero-wait-state, low-latency storage for critical code sections (e.g., ISRs) and stack variables, avoiding AHB bus contention. It is mapped to address 0x10000000 and can be enabled via SYSCFG_MEMRMP register; its use requires explicit linker script placement and compiler attributes (e.g., __attribute__((section(".ccmram")))).