STMicroelectronics

STM32F446VCT6 - 180MHz Cortex-M4 MCU, 256KB Flash | STMicroelectronics

Name: STM32F446VCT6
Brand: STMicroelectronics
Price: 6.73 USD
Availability: InStock

MPN: STM32F446VCT6 ✓ Active

In Stock (99,999) Ships in 1-3 business days

2.0V to 3.6V Vdss 100-LQFP (14x14 mm) Package 180 MHz Speed 256 KB Memory

$6.73 USD / Unit

MOQ: 1 |

Volume Pricing

Qty	Unit Price	Extended
1	$6.73	$6.73
10	$5.21	$52.10
100	$4.84	$484.00
500	$4.47	$2,235.00
1,000	$4.23	$4,230.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for STM32F446VCT6 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

STM32F446VET6

✅ Drop-In

📦 100-LQFP (14x14 mm)

512 KB Flash instead of 256 KB, same pinout

📋 Reference alternative (not in catalog)

STM32F446VGT6

✅ Drop-In

📦 100-LQFP (14x14 mm)

1 MB Flash, same pinout

📋 Reference alternative (not in catalog)

GD32F450VIT6

✅ Drop-In

📦 100-LQFP (14x14 mm)

200 MHz, 512 KB Flash, pin-compatible but firmware porting needed

📋 Reference alternative (not in catalog)

GD32F407VET6

✅ Drop-In

📦 100-LQFP (14x14 mm)

168 MHz, 512 KB Flash, pin-compatible but firmware porting needed

📋 Reference alternative (not in catalog)

ℹ️ 1 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

STM32F446VCT6 Maximum Ratings & Electrical Characteristics

Core	ARM Cortex-M4 with FPU
Maximum Clock Frequency	180 MHz
Flash Memory	256 KB
SRAM	128 KB
Package	100-LQFP (14x14 mm)
Operating Voltage	2.0V to 3.6V
I/O Pins	82
ADC	3x 12-bit, 16 channels
DAC	2x 12-bit
Timers	12x 16-bit, 2x 32-bit
Communication Interfaces	USART, SPI, I2C, CAN, USB OTG, SDIO
Operating Temperature	-40C to +85C
Mounting Type	Surface Mount
RoHS Status	Compliant
DSP Instructions	Yes

STM32F446VCT6 Pin Configuration

Pin 1	VBAT — Backup battery supply
Pin 2	PC13 — GPIO / RTC tamper
Pin 3	PC14 — GPIO / OSC32_IN
Pin 4	PC15 — GPIO / OSC32_OUT
Pin 5	PF0 — GPIO / OSC_IN
Pin 6	PF1 — GPIO / OSC_OUT
Pin 7	NRST — Reset (active low)
Pin 8	PC0 — GPIO / ADC12_IN10
Pin 9	PC1 — GPIO / ADC12_IN11
Pin 10	PC2 — GPIO / ADC12_IN12
Pin 11	PC3 — GPIO / ADC12_IN13
Pin 12	VDD — Digital power supply
Pin 13	VSS — Digital ground
Pin 14	PC4 — GPIO / ADC12_IN14
Pin 15	PC5 — GPIO / ADC12_IN15
Pin 16	PB2 — GPIO / BOOT1
Pin 17	PE7 — GPIO / TIM1_ETR
Pin 18	PE8 — GPIO / TIM1_CH1N
Pin 19	PE9 — GPIO / TIM1_CH1
Pin 20	PE10 — GPIO / TIM1_CH2N

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

STM32F446VCT6 is suitable for 6 applications: Industrial Motor Control, IoT Gateway, Audio Processing, Consumer Electronics, Medical Devices, Robotics.

🏭

Industrial Motor Control

The STM32F446VCT6 is ideal for industrial motor control applications. Its 180 MHz Cortex-M4 core with FPU and DSP instructions efficiently executes field-oriented control (FOC) algorithms for brushless DC (BLDC) and permanent magnet synchronous motors (PMSM). The device includes advanced timers with complementary PWM outputs, 12-bit ADCs for current and voltage sensing, and CAN interface for industrial communication. In a typical motor drive, the MCU reads phase currents via ADCs, computes the FOC algorithm, and generates PWM signals to drive the inverter. The high clock speed ensures low latency in control loops, while the FPU accelerates mathematical computations. Designers should ensure proper isolation and filtering on ADC inputs to minimize noise from the power stage. The CAN interface enables seamless integration into industrial networks, making this MCU a robust choice for variable frequency drives, servo drives, and robotics.

Recommended

IR2104 (Gate driver for MOSFET/IGBT in inverter) ACS712 (Current sensor for phase current feedback)

🌐

IoT Gateway

The STM32F446VCT6 serves as a powerful MCU for IoT gateways, providing the processing power to handle multiple communication protocols and data aggregation. With interfaces for Ethernet (via external PHY), USB OTG, CAN, and multiple UARTs/SPIs, it can connect to various sensors and actuators. The 256 KB Flash and 128 KB SRAM accommodate RTOS, TCP/IP stacks, and application logic. In a typical IoT gateway, the MCU collects data from sensors via UART or SPI, processes it, and forwards it to the cloud via Ethernet or Wi-Fi (using an external module). The high clock speed enables real-time data processing and protocol conversion. Designers should consider power consumption, as the MCU can operate in low-power modes when idle. The rich peripheral set and ample memory make it suitable for edge computing tasks, such as data filtering and local decision-making, reducing cloud latency and bandwidth usage.

Recommended

ESP8266 (Wi-Fi module for cloud connectivity) LAN8720A (Ethernet PHY for wired connectivity)

🎧

Audio Processing

The STM32F446VCT6 is well-suited for audio processing applications, such as audio effects processors, voice recognition, and active noise cancellation. The 180 MHz Cortex-M4 core with FPU and DSP instructions accelerates audio algorithms like FIR/IIR filters, FFT, and audio codecs. The device includes I2S interfaces for connecting to audio codecs and DACs, and a 12-bit DAC for direct analog output. In a typical audio application, the MCU receives digital audio via I2S, processes it in real-time (e.g., equalization, reverb), and outputs the processed signal. The high clock speed ensures low latency, critical for real-time audio. The FPU simplifies floating-point audio algorithms, improving precision and dynamic range. Designers should use high-quality audio codecs and ensure proper grounding to minimize noise. The large SRAM allows buffering of audio samples, reducing dropouts.

Recommended

CS43L22 (Audio codec with I2S interface) TAS5754M (Digital audio amplifier)

📱

Consumer Electronics

The STM32F446VCT6 is a versatile MCU for consumer electronics, including smart home devices, wearables, and portable gadgets. Its low power consumption in Stop and Standby modes extends battery life, while the high performance supports rich user interfaces and connectivity. The device includes USB OTG for direct connection to smartphones or PCs, and multiple timers for PWM dimming of LEDs or driving buzzers. In a smart home device, the MCU can manage sensors, display, and wireless communication (via external modules). The 256 KB Flash allows for feature-rich firmware, and the 128 KB SRAM supports complex applications. Designers should optimize power consumption by using low-power modes and efficient clock gating. The wide operating voltage range (2.0V to 3.6V) accommodates various battery configurations.

Recommended

CC2541 (BLE module for wireless connectivity) TMP117 (High-accuracy temperature sensor)

💊

Medical Devices

The STM32F446VCT6 is used in medical devices such as patient monitors, infusion pumps, and diagnostic equipment. Its high performance and rich analog peripherals enable precise data acquisition and real-time processing. The 12-bit ADCs with up to 16 channels can interface with various sensors (e.g., ECG, SpO2, temperature). The device includes a true random number generator (RNG) for security applications, and multiple communication interfaces for data logging and connectivity. In a patient monitor, the MCU acquires vital signs, processes them, and displays them on a screen or transmits to a central station. The high clock speed ensures timely processing of critical data. Designers must ensure compliance with medical standards (e.g., IEC 60601) and implement robust error handling. The large memory allows for storing patient data and firmware updates.

Recommended

ADS1298 (ECG front-end with SPI interface) MAX30102 (Pulse oximeter sensor)

🤖

Robotics

The STM32F446VCT6 is a powerful MCU for robotics, providing the computational power for control algorithms, sensor fusion, and communication. Its 180 MHz Cortex-M4 core with FPU accelerates kinematics and dynamics calculations, while the multiple timers and ADCs interface with encoders, IMUs, and motor drivers. The device supports CAN for multi-motor coordination and UART/SPI for communication with sensors and modules. In a robot, the MCU reads encoder data, processes IMU data for orientation, and generates PWM signals for motor control. The high clock speed enables real-time control loops, essential for stable and responsive robots. Designers should consider the power requirements of motors and ensure proper isolation between power and logic circuits. The rich peripheral set and memory make it suitable for autonomous robots with complex behaviors.

Recommended

MPU6050 (IMU for orientation sensing) DRV8825 (Stepper motor driver)

Recommended Products Summary

IR2104 Gate driver for MOSFET/IGBT in inverter Used in: Industrial Motor Control ACS712 Current sensor for phase current feedback Used in: Industrial Motor Control ESP8266 Wi-Fi module for cloud connectivity Used in: IoT Gateway LAN8720A Ethernet PHY for wired connectivity Used in: IoT Gateway CS43L22 Audio codec with I2S interface Used in: Audio Processing TAS5754M Digital audio amplifier Used in: Audio Processing CC2541 BLE module for wireless connectivity Used in: Consumer Electronics TMP117 High-accuracy temperature sensor Used in: Consumer Electronics ADS1298 ECG front-end with SPI interface Used in: Medical Devices MAX30102 Pulse oximeter sensor Used in: Medical Devices MPU6050 IMU for orientation sensing Used in: Robotics DRV8825 Stepper motor driver Used in: Robotics

What is the maximum clock frequency of STM32F446VCT6?

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.

How much Flash memory does STM32F446VCT6 have?

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.

What is the difference between STM32F446VCT6 and STM32F446RET6?

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.

Can STM32F446VCT6 be used for motor control applications?

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.

What is the operating voltage range of STM32F446VCT6?

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.

Where can I buy STM32F446VCT6 online?

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.

What is the price of STM32F446VCT6?

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.

What is the lead time for STM32F446VCT6?

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.

Is STM32F446VCT6 in stock?

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.

STM32F446VCT6 vs STM32F407VGT6 - which is better for audio processing?

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.

When should I choose STM32F446VCT6 over STM32F103VCT6?

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.

What is the best drop-in replacement for STM32F446VCT6?

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.

Can GD32F450VIT6 replace STM32F446VCT6?

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.

Where to download STM32F446VCT6 datasheet PDF?

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.

Where to find STM32F446VCT6 pinout?

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.

What are the key specifications of STM32F446VCT6 that engineers should know?

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.

Hey Google, what can replace STM32F446VCT6?

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.

Is STM32F446VCT6 the same as STM32F446VET6?

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.

What is the best GigaDevice equivalent for STM32F446VCT6?

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.

What are the power consumption figures for STM32F446VCT6?

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.

Engineering reference data for STM32F446VCT6 — comparison, design guidance, and compliance information.

Selection Guide

Choose the STM32F446VCT6 when you need a high-performance MCU with FPU and DSP capabilities at a cost-effective price point. It is ideal for applications requiring real-time processing, such as motor control, audio, and IoT gateways. If you need more Flash memory, consider the STM32F446VET6 (512 KB) or STM32F446VGT6 (1 MB), which are pin-compatible. For cross-brand alternatives, the GigaDevice GD32F450VIT6 offers higher clock speed and more SRAM but requires firmware porting. The STM32F446VCT6 is best for designs where STM32 ecosystem, tools, and libraries are preferred, and where 256 KB Flash is sufficient. For simpler applications with lower performance needs, the STM32F103 series may be more cost-effective.

Comparison with Alternatives

Parameter	This Product	STM32F446VET6	STM32F446VGT6	GD32F450VIT6
Package	100-LQFP (14x14 mm)	100-LQFP (14x14 mm) - same	100-LQFP (14x14 mm) - same	100-LQFP (14x14 mm) - same
Brand	STMicroelectronics	STMicroelectronics	STMicroelectronics	GigaDevice
Core Clock	180 MHz	180 MHz	180 MHz	200 MHz
Flash Memory	256 KB	512 KB	1 MB	512 KB
SRAM	128 KB	128 KB	128 KB	192 KB
FPU	Yes	Yes	Yes	Yes
Operating Voltage	2.0V to 3.6V	2.0V to 3.6V	2.0V to 3.6V	2.6V to 3.6V
Price (1 pcs)	$6.73	[DATA_NEEDED]	[DATA_NEEDED]	[DATA_NEEDED]

Key Differentiators

Higher clock speed with FPU (vs STM32F103VCT6)
More SRAM (vs STM32F407VGT6)
Pin-compatible with larger Flash variants (vs STM32F446VET6)

Design Notes

Decouple each VDD pin with a 100 nF ceramic capacitor placed as close as possible to the pin. Additionally, use a 4.7 uF or larger bulk capacitor on the main power rail. For VDDA (analog supply), use a dedicated LC filter or ferrite bead to isolate analog noise. Ensure VSSA is connected to a clean analog ground plane.

For the 100-pin LQFP package, ensure adequate copper area for thermal dissipation. The thermal resistance (theta_JA) is approximately 45 C/W, so for high-current I/O toggling, add thermal vias under the exposed pad (if present) and connect to a ground plane. Keep high-speed traces short and use proper impedance control for USB and Ethernet interfaces.

When using the STM32F446VCT6, ensure the boot pins (BOOT0 and BOOT1) are configured correctly. BOOT0 is typically tied to ground for normal operation. Also, verify the HSE crystal load capacitors match the crystal's specification. Incorrect values can cause startup failures. For low-power modes, ensure all unused GPIOs are configured to analog mode to reduce leakage current.