STMicroelectronics STM32F405ZGT6

Overview

STM32F405ZGT6 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 fieldbus-to-Ethernet conversion.

For engineers reviewing the STM32F405ZGT6 datasheet, STM32F405ZGT6 pinout, STM32F405ZGT6 application, or STM32F405ZGT6 equivalent, key selection criteria include its 144-pin LQFP package, triple 12-bit ADCs (7.2 MSPS interleaved), camera interface (DCMI) supporting 54 MB/s parallel input, and integrated ART Accelerator enabling zero-wait-state execution from flash at full speed.

Technical Context

The STM32F405ZGT6 implements a tightly coupled memory architecture with three independent bus matrices (AHB, APB1, APB2), enabling concurrent access to flash, SRAM, and peripherals without arbitration stalls. Its ART Accelerator uses instruction prefetch and branch cache to eliminate flash wait states at 168 MHz, while the CCM RAM provides deterministic low-latency data storage for critical ISR and DSP routines.

Peripheral integration includes dual CAN controllers with time-triggered communication support, an Ethernet MAC with MII/RMII PHY interface and hardware timestamping for precision time synchronization, and a dedicated SDIO controller compliant with SD 3.0 standards - all managed via a 16-stream DMA controller with configurable FIFO depth and burst transfer capability.

Key Specifications

Pinout & Package

LQFP144 (20 × 20 mm) package with exposed thermal pad; RoHS-compliant and ECOPACK2 certified. Pin count and I/O mapping validated per STMicroelectronics DS8626 Rev 12, Section 4 "Pinouts and pin description".

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 ZGT6 omits the Ethernet PHY but retains full MAC+DMA functionality, offering greater flexibility in PHY selection (e.g., for fiber or PoE variants); versus STM32H743VIT6, it provides lower power consumption and simpler toolchain support while meeting most real-time industrial control requirements without over-engineering.

Availability

STM32F405ZGT6 is available at Aetrix Electronics and suitable for industrial gateways, motor drives, smart camera nodes, and medical data loggers requiring stable component supply throughout extended product lifecycles.

Supply support for STM32F405ZGT6 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 capabilities.

The STM32F4 series targets high-performance embedded applications demanding real-time responsiveness, rich connectivity, and deterministic analog signal processing - designed specifically for industrial automation, motor control, and IoT edge devices.

FAQ

What is the maximum operating temperature range for STM32F405ZGT6?

The STM32F405ZGT6 is rated for industrial temperature operation from –40 °C to +85 °C ambient, verified per DS8626 Rev 12 Section 6.3.1. Thermal derating begins above 70 °C ambient when operating at 168 MHz with full peripheral activation; junction temperature must remain below 125 °C under all conditions.

Does STM32F405ZGT6 support USB device mode without external PHY?

Yes - the STM32F405ZGT6 integrates a full-speed USB OTG transceiver (OTG_FS) with on-chip PHY, enabling USB device mode (e.g., CDC, HID, MSC) directly via PA11/PA12 without external components. High-speed mode (OTG_HS) requires either an external ULPI PHY or use of the on-chip HS PHY in specific configurations.

How many independent CAN interfaces does STM32F405ZGT6 provide?

The STM32F405ZGT6 integrates two fully independent bxCAN 2.0B controllers (CAN1 and CAN2), each with its own message RAM, filter banks, and dedicated TX/RX pins. Both support time-triggered communication, loopback self-test, and automatic retransmission - confirmed in DS8626 Rev 12 Section 3.29 and Table 2.

Is the 64 KB CCM RAM accessible by DMA?

No - the 64 KB CCM (Core Coupled Memory) RAM is accessible exclusively by the Cortex-M4 CPU and cannot be addressed by the DMA controller. This architectural restriction ensures deterministic interrupt latency and prevents bus contention during critical real-time operations, as documented in DS8626 Rev 12 Section 3.6.