Item specifics
Description
The STM32F427VGT6 is a Cortex-M4 high-performance MCU from STMicroelectronics in an LQFP-100 package. It runs at 180 MHz with FPU and ART Accelerator. It integrates 1 MB Flash, 256 KB SRAM (incl. 64 KB CCM), Ethernet 10/100 MAC (IEEE 1588 PTP, MII/RMII), USB 2.0 OTG (FS/HS, FS on-chip PHY), camera interface (DCMI), hardware crypto/HASH/true random number processor, dual CAN 2.0B, two 12-bit DACs, three 12-bit ADCs (24ch, up to 7.2 MSPS in triple-interleaved mode), up to 17 timers (incl. 2 advanced motor control PWM/deadtime). 82 I/Os, all 5 V-tolerant. Supply 1.8–3.6 V, -40–85 °C. Compared to the STM32F407VGT6 (168 MHz, 192 KB SRAM), this model increases the core frequency to 180 MHz, increases SRAM to 256 KB, adds a second CAN interface and a true random number generator, providing comprehensive enhancements in performance and security. Compared to the STM32F401RET6 (84 MHz Cortex-M4), it delivers an overall performance upgrade and adds advanced features including Ethernet, DCMI, crypto engine, and dual CAN.
Core: Arm Cortex-M4 180 MHz + FPU + ART Accelerator Memory: 1 MB Flash, 256 KB SRAM (incl. 64 KB CCM) Ethernet MAC: 10/100 Mbit/s, IEEE 1588 PTP hardware support, MII/RMII USB 2.0 OTG: FS + HS, FS on-chip PHY, HS requires external ULPI SDIO + HW Crypto: SD/MMC interface; AES 128/192/256, 3DES, HASH (MD5, SHA-1), True RNG Dual CAN 2.0B: Supports dual industrial bus communication Camera Interface: 8–14-bit parallel DCMI 3×12-bit ADCs: 24 channels, 2.4 MSPS (up to 7.2 MSPS in triple-interleaved mode) 2×12-bit DACs: Buffered output Timers: Up to 17 (2× motor control PWM/deadtime/emergency stop, 12× 16-bit GP/quadrature encoder, 2× basic, 2× watchdogs, SysTick) Communication Interfaces: 4×USART + 2×UART (ISO7816/LIN/IrDA), 3×SPI (30 Mbit/s), 2×I2S, 3×I2C (SMBus), USB OTG, SDIO, Ethernet I/Os: 82, all 5 V-tolerant Low Power: Sleep/Stop/Standby, VBAT backup RTC Package: LQFP-100 (14×14×1.4 mm)
Industrial: PLCs, inverters, precision motor drives, industrial Ethernet gateways Motor Control: Dual-motor FOC, servo drives, pumps Image Capture: Simple camera monitoring, barcode scanning, industrial vision Network Communication: Ethernet control nodes, IoT gateways Security Applications: IoT security, payment terminals, data integrity verification Portable Medical Devices
180 MHz Cortex-M4 + FPU: Increased core frequency for complex DSP and floating-point operations 256 KB SRAM + 1 MB Flash: Large SRAM for complex data processing and buffering Ethernet + DCMI + Crypto + Dual CAN: Network communication, image capture, data security, and dual industrial bus in a 100-pin package Hardware Crypto Engine + RNG: AES/3DES/HASH/true random number for data security and integrity Dual DACs + 3 ADCs: Comprehensive analog functions with multi-channel synchronous acquisition 17 Timers (incl. 2 Motor Control): Supports dual-motor FOC Mature STM32 Ecosystem: CubeIDE/CubeMX/HAL/LL
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FAQ:
What is the STM32F427VGT6 and how does it differ from the STM32F427VIT6?
The STM32F427VGT6 is a 180 MHz Cortex‑M4 microcontroller with 1 MB Flash, 256 KB SRAM, and an extensive set of communication peripherals, all in a compact LQFP‑100 package. The only difference from the VIT6 is the Flash size: the VGT6 has 1 MB while the VIT6 provides 2 MB. Both share the same CPU speed, SRAM, and peripheral count, making the VGT6 the more cost‑sensitive choice when 1 MB of code and data storage is sufficient.
Is 1 MB of Flash enough for a real‑time OS, TCP/IP, and industrial fieldbus stacks?
Absolutely. A typical setup with FreeRTOS, LwIP, CANopen or Modbus/TCP, plus a file system and application logic, often occupies between 400 KB and 700 KB. This leaves ample headroom for custom features, calibration tables, or a small web server. If your code base is well‑defined and unlikely to expand beyond 1 MB, the VGT6 delivers the same M4 processing power and connectivity as the larger‑Flash versions without paying for unused memory.
Why choose the LQFP‑100 package for a high‑performance MCU? Doesn’t it limit I/O?
The LQFP‑100 provides up to 82 I/Os, which is sufficient for many industrial devices. You can run Ethernet (RMII), USB high‑speed (ULPI), dual CAN, and still have pins for several UART, SPI, and I2C interfaces—all without conflicts when planned carefully. The 100‑pin body keeps the PCB small, simplifies layout, and is far easier to hand‑solder or rework than larger 144‑pin or BGA packages.
How does the STM32F427VGT6 compare to the STM32F407VGT6? Is it a good upgrade?
Yes, it is a direct evolution. Both are LQFP‑100 and share a very similar pin‑out. The F427VGT6 raises the clock to 180 MHz (from 168 MHz), increases SRAM to 256 KB (from 192 KB), and adds extra serial interfaces while keeping the Flash at 1 MB. This means you get more processing headroom and larger runtime memory with essentially the same PCB, and existing STM32F4 HAL code ports with minimal effort.
Does the STM32F427VGT6 have a graphics controller or camera interface?
No. Like all STM32F427 devices, it lacks the TFT‑LCD controller, Chrom‑ART accelerator, and DCMI camera interface found on the F429 series. It is optimised for headless (display‑less) applications, such as industrial gateways, motor drives, and data concentrators. If a graphical display is required, you can still drive a small SPI LCD or upgrade to an STM32F429 variant.
How is the 256 KB SRAM organised, and what is the CCM memory?
The SRAM is split into 112 KB of general‑purpose RAM, 64 KB of core‑coupled memory (CCM), 64 KB of additional system SRAM, and 16 KB of instruction TCM. The CCM offers zero‑wait‑state access for the CPU and is perfect for the stack and real‑time critical data, but it cannot be used by DMA. Assign DMA‑dependent buffers to the general‑purpose or system SRAM.
Can the STM32F427VGT6 run Ethernet, USB HS, and two CAN ports simultaneously with 82 I/Os?
Yes. Using RMII for Ethernet (instead of the pin‑hungry MII) and ULPI for USB HS, you can allocate all these interfaces plus a pair of UARTs and SPIs without pin conflicts. STM32CubeMX helps you verify the exact multiplexing and ensures no signal overlaps before you finalise the schematic.
Is 1 MB Flash sufficient for over‑the‑air (OTA) firmware updates?
Yes. You can logically partition the Flash into a bootloader, an active application, and a download buffer, or use an A/B scheme with two 500 KB slots. The large SRAM temporarily holds the new firmware image during reception and verification, enabling safe single‑bank updates over Ethernet, USB, or a wireless module.
What development tools and IDEs support the STM32F427VGT6? Is there a suitable Nucleo board?
All major environments—free STM32CubeIDE, Keil MDK, and IAR EWARM—fully support the chip. While no dedicated 100‑pin Nucleo exists for this exact part, the NUCLEO‑F429ZI (144‑pin) is fully software‑compatible. Develop your firmware there, then re‑target to the VGT6 by adjusting the linker script and CubeMX pin‑out.
What are the most typical applications for the STM32F427VGT6?
It is ideal for cost‑optimised industrial IoT gateways, CAN‑Ethernet converters, multi‑axis motor controllers, digital power supplies, and programmable logic controllers (PLCs). Its balance of 1 MB Flash, 256 KB SRAM, and rich serial connectivity in an easy‑to‑manufacture LQFP‑100 package makes it a go‑to choice for professional headless designs that do not require a graphical interface.