STM32F446VCT6: The Definitive Guide to STMicroelectronics' 180 MHz Cortex-M4 MCU

Admin Β· Aug 22, 2026 Β· 4 min read AI-Assisted Β· Updated: Aug 21, 2026 Β· Fact-Checked
Explore the STM32F446VCT6, a 180 MHz ARM Cortex-M4 MCU with 256 KB Flash and 128 KB SRAM. Learn specs, design tips, alternatives, and market insights. Available now at XAIPART.

Quick Answers: What Is the STM32F446VCT6 and Why Does It Matter?

The STM32F446VCT6 is a high-performance 32-bit microcontroller from STMicroelectronics, built on the Arm Cortex-M4 core with FPU and DSP instructions. It operates at a maximum clock frequency of 180 MHz, delivering 225 DMIPS, and comes with 256 KB of Flash memory and 128 KB of SRAM. The device is housed in a 100-pin LQFP (14x14 mm) package and is currently available at XAIPART with a base price of $4.9848 as of 2026-08-22. This MCU is designed for demanding embedded applications such as industrial motor control, IoT gateways, and audio processing, offering a rich set of peripherals including 3x 12-bit ADCs, 2x 12-bit DACs, and multiple communication interfaces.

Technical Guide: How to Select, Design In, and Use the STM32F446VCT6

When selecting the STM32F446VCT6 for your project, consider its core specifications: a 180 MHz Arm Cortex-M4 with FPU, 256 KB Flash, 128 KB SRAM, and a 2.0V to 3.6V operating range. The device provides 82 I/O pins, 3x 12-bit ADCs with 16 channels, 2x 12-bit DACs, 12x 16-bit timers, and 2x 32-bit timers. Communication interfaces include USART, SPI, I2C, CAN, USB OTG, and SDIO, making it versatile for various connectivity needs.

For power supply design, ensure proper decoupling with 100 nF capacitors placed close to each VDD pin. The device supports multiple low-power modes (Sleep, Stop, Standby) to optimize energy consumption. When laying out the PCB, consider the thermal characteristics of the LQFP-100 package; adequate copper area is recommended for high-current I/O toggling.

To start development, download the datasheet from STMicroelectronics and use the STM32CubeMX tool for pin configuration and code generation. The FPU accelerates floating-point arithmetic, which is beneficial for DSP algorithms like FOC motor control or audio filtering.

Alternatives & Comparison: Drop-In Replacements for STM32F446VCT6

If you need more Flash memory or a different performance level, several pin-compatible alternatives exist. The STM32F446VET6 offers 512 KB Flash, while the STM32F446VGT6 provides 1 MB Flash, both in the same 100-pin LQFP package. For cross-brand options, the GigaDevice GD32F450VIT6 runs at 200 MHz with 512 KB Flash and is pin-compatible, but firmware porting is required. The GD32F407VET6 is another alternative at 168 MHz with 512 KB Flash. Note that the STM32F446RCT6 is not pin-compatible due to its 64-pin package.

ParameterSTM32F446VCT6STM32F446VET6STM32F446VGT6GD32F450VIT6GD32F407VET6
CoreARM Cortex-M4 with FPUARM Cortex-M4 with FPUARM Cortex-M4 with FPUARM Cortex-M4 with FPUARM Cortex-M4 with FPU
Max Clock180 MHz180 MHz180 MHz200 MHz168 MHz
Flash256 KB512 KB1 MB512 KB512 KB
SRAM128 KB128 KB128 KB192 KB192 KB
Package100-LQFP100-LQFP100-LQFP100-LQFP100-LQFP
Pin CompatibilityReferenceYesYesYes (firmware porting needed)Yes (firmware porting needed)

When selecting an alternative, verify electrical characteristics and firmware compatibility. For a drop-in replacement with more Flash, the STM32F446VET6 is the best choice. For higher performance, the GD32F450VIT6 offers 200 MHz but requires firmware changes.

Industry Insight: Market Position, Lifecycle, and Supply Situation

The STM32F446VCT6 is currently in an active lifecycle status, indicating ongoing production and availability. As of 2026-08-22, XAIPART holds 99,999 units in stock, ensuring immediate availability for orders. The device is widely used in industrial, consumer, and medical applications, reflecting its strong market position within the STM32F4 series. Pricing tiers start at $8.7273 for single units and decrease to $4.9848 for quantities of 1080 or more, making it cost-effective for volume production. [DATA_NEEDED: Global market share data for STM32F446VCT6]

Trends & Outlook: What Buyers Should Watch

As embedded systems demand higher performance and connectivity, the STM32F446VCT6 remains relevant due to its 180 MHz core and rich peripheral set. The trend toward edge computing and real-time control in IoT and industrial automation aligns with the MCU's capabilities. Buyers should monitor supply chain dynamics, as lead times can vary; the current stock at XAIPART provides a buffer. Additionally, the availability of pin-compatible alternatives with more Flash (e.g., STM32F446VET6) offers scalability for future firmware growth. The active lifecycle ensures long-term support, but designers should plan for potential obsolescence by considering second-source options like GigaDevice equivalents.

Frequently Asked Questions

The STM32F446VCT6 operates at a maximum clock frequency of 180 MHz. According to the STMicroelectronics datasheet, this is achieved with the Arm Cortex-M4 core with FPU, providing 225 DMIPS performance. This high frequency enables demanding real-time applications such as motor control and audio processing.
The STM32F446VCT6 has 256 KB of Flash memory. This is sufficient for complex firmware, including RTOS, communication stacks, and application code. The Flash is organized as 256K x 8 bits and supports read-while-write for EEPROM emulation.
The STM32F446VCT6 has 256 KB Flash and 128 KB SRAM, while the STM32F446RET6 has 512 KB Flash and 128 KB SRAM. Both are in the same STM32F446 family, but the RET6 offers double the Flash memory. They share the same 100-pin LQFP package and are pin-compatible, but the RET6 is better suited for applications requiring larger code storage.
Yes, the STM32F446VCT6 is well-suited for motor control. Its 180 MHz Cortex-M4 core with FPU and DSP instructions efficiently executes field-oriented control (FOC) algorithms. It includes advanced timers with complementary PWM outputs, 12-bit ADCs for current sensing, and CAN interface for industrial communication, making it ideal for brushless DC and permanent magnet synchronous motor drives.
The STM32F446VCT6 operates from 2.0V to 3.6V. This wide range allows flexibility in power supply design, supporting both 3.3V and lower-voltage systems. The device has internal voltage regulators and brown-out reset circuitry to ensure reliable operation across the voltage range.
The STM32F446VCT6 is available from major distributors such as DigiKey, Mouser, and Octopart. As of 2026-08-19, pricing starts at approximately $6.73 for single-unit quantities, with volume discounts available. Lead times vary by distributor, typically 1-2 weeks for in-stock items.
As of 2026-08-19, the STM32F446VCT6 is priced at approximately $6.73 for 1 unit, $5.21 for 10 units, $4.84 for 100 units, $4.47 for 500 units, and $4.23 for 1000 units. Prices are from distributor Onzuu and may vary by supplier and order quantity.
The lead time for STM32F446VCT6 is typically 12 weeks from STMicroelectronics, as indicated by Onzuu. However, many distributors like DigiKey and Mouser often have stock available for immediate shipment. For large orders, it is advisable to check current availability with your preferred distributor.
Yes, the STM32F446VCT6 is currently in stock at several distributors. Heisener reports 6,944 pieces in stock, and Onzuu shows 153 units. DigiKey and Mouser also list it as available. Stock levels can change rapidly, so it is recommended to check the distributor's website for real-time availability.
For audio processing, the STM32F446VCT6 is generally better due to its higher clock speed (180 MHz vs 168 MHz) and integrated FPU, which accelerates DSP algorithms. Both have similar peripheral sets, but the F446's faster core and additional SRAM (128 KB vs 192 KB) provide better real-time performance for audio effects and codec interfacing. However, the F407 has more Flash (1 MB vs 256 KB), which may be beneficial for large audio sample libraries.
Choose the STM32F446VCT6 when you need higher performance, a floating-point unit, and more advanced peripherals. The F446 runs at 180 MHz with FPU and DSP instructions, while the F103 runs at 72 MHz without FPU. The F446 also offers more SRAM (128 KB vs 48 KB) and additional interfaces like USB OTG and CAN. However, the F103 is more cost-effective for simple applications and has a larger ecosystem of legacy code.
The best drop-in replacement for STM32F446VCT6 is the STM32F446VET6, which is pin-compatible and offers 512 KB Flash instead of 256 KB. Other pin-compatible options include the STM32F446RCT6 (64-pin, not drop-in for 100-pin) and the STM32F446VGT6 (1 MB Flash). For cross-brand alternatives, the GigaDevice GD32F450VIT6 is a pin-compatible option, but firmware porting is required.
Yes, the GD32F450VIT6 from GigaDevice can replace the STM32F446VCT6 as a drop-in replacement. It shares the same 100-pin LQFP package and is pin-to-pin compatible. However, firmware porting is required because the register map and peripheral libraries differ. The GD32F450 runs at 200 MHz and offers similar memory, but you must verify all peripherals and clock configurations before production.
The STM32F446VCT6 datasheet PDF can be downloaded from the STMicroelectronics website at https://www.st.com/resource/en/datasheet/stm32f446vc.pdf. It is also available on distributor sites like DigiKey and Mouser, and on datasheet aggregators like Octopart and Datasheets.com.
The STM32F446VCT6 pinout is detailed in the datasheet, specifically in the pin description section. The 100-pin LQFP package has 82 I/O pins, with multiple power and ground pins. The pinout diagram is available on page 30 of the datasheet, and a summary is provided in the product documentation on the ST website.
The STM32F446VCT6 features a 180 MHz Arm Cortex-M4 core with FPU, 256 KB Flash, 128 KB SRAM, and operates from 2.0V to 3.6V. It includes 3x 12-bit ADCs, 2x 12-bit DACs, 12x 16-bit timers, 2x 32-bit timers, and interfaces for USART, SPI, I2C, CAN, USB OTG, and SDIO. The device is available in a 100-pin LQFP package and is RoHS compliant.
The STM32F446VCT6 can be replaced by the STM32F446VET6 (same package, more Flash) or the STM32F446VGT6 (same package, 1 MB Flash). For cross-brand options, the GigaDevice GD32F450VIT6 is pin-compatible, but firmware changes are needed. Always verify pin compatibility and electrical characteristics before substitution.
No, the STM32F446VCT6 and STM32F446VET6 are not the same. The VCT6 has 256 KB Flash and 128 KB SRAM, while the VET6 has 512 KB Flash and 128 KB SRAM. They share the same 100-pin LQFP package and are pin-compatible, but the VET6 offers double the Flash memory, making it suitable for larger applications.
The best GigaDevice equivalent for STM32F446VCT6 is the GD32F450VIT6. It is pin-compatible with the same 100-pin LQFP package and offers a 200 MHz Cortex-M4 core with FPU, 512 KB Flash, and 192 KB SRAM. However, firmware porting is required due to differences in the peripheral register map and library APIs.
The STM32F446VCT6 has typical power consumption of 240 uA/MHz in Run mode at 3.3V. In Stop mode, it consumes approximately 20 uA with RTC and backup registers. Standby mode reduces consumption to about 2 uA. These figures are from the datasheet and depend on the clock configuration and peripheral usage.

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