STM32F446ZET6 - 180MHz ARM Cortex-M4F MCU | STMicroelectronics
MPN: STM32F446ZET6 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.5 | $12.50 |
| 10 | $11.25 | $112.50 |
| 100 | $10 | $1,000.00 |
| 500 | $9 | $4,500.00 |
| 1,000 | $8.1 | $8,100.00 |
Drop-in alternatives for STM32F446ZET6 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
STM32F446ZET6TR
β Drop-Inπ Reference alternative (not in catalog)
STM32F446ZET6Q
β Drop-Inπ Reference alternative (not in catalog)
STM32F446ZET7
β Drop-Inπ Reference alternative (not in catalog)
STM32F446ZET6
β Drop-Inβ 99,999 In Stock
$8.1 / Unit
View Datasheet βSTM32F446ZET6
β Drop-Inβ 99,999 In Stock
$8.1 / Unit
View Datasheet βSTM32F446ZET6 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M4F with FPU |
| Maximum Clock Speed | 180 MHz |
| Flash Memory | 512 KB |
| SRAM | 128 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Operating Temperature Range | -40Β°C to +85Β°C |
| Package | LQFP144 (20x20 mm) |
| Number of I/O Pins | 114 |
| ADC | 3x 12-bit, up to 24 channels |
| DAC | 2x 12-bit |
| Timers | 12x 16-bit, 2x 32-bit |
| USART | 4x |
| SPI | 4x |
| I2C | 4x |
| USB | USB OTG FS/HS |
| CAN | 2x |
| FMC | Yes (external memory interface) |
| RNG | Yes (true random number generator) |
| RTC | Yes (with calendar) |
| DMA | 16 channels |
| RoHS Status | Compliant |
STM32F446ZET6 Pin Configuration
| Pin 1 | PE2 β GPIO / alternate functions |
| Pin 2 | PE3 β GPIO / alternate functions |
| Pin 3 | PE4 β GPIO / alternate functions |
| Pin 4 | PE5 β GPIO / alternate functions |
| Pin 5 | PE6 β GPIO / alternate functions |
| Pin 6 | VBAT β Backup battery supply |
| Pin 7 | PC13 β GPIO / RTC tamper |
| Pin 8 | PC14 β GPIO / OSC32_IN |
| Pin 9 | PC15 β GPIO / OSC32_OUT |
| Pin 10 | PF0 β GPIO / FMC_A0 |
| Pin 11 | PF1 β GPIO / FMC_A1 |
| Pin 12 | PF2 β GPIO / FMC_A2 |
| Pin 13 | PF3 β GPIO / FMC_A3 |
| Pin 14 | PF4 β GPIO / FMC_A4 |
| Pin 15 | PF5 β GPIO / FMC_A5 |
| Pin 16 | VSS β Ground |
| Pin 17 | VDD β Power supply |
| Pin 18 | PF6 β GPIO / FMC_NWAIT |
| Pin 19 | PF7 β GPIO / FMC_NE1 |
| Pin 20 | PF8 β GPIO / FMC_NCE2 |
| Pin 21 | PF9 β GPIO / FMC_NCE3 |
| Pin 22 | PF10 β GPIO / FMC_NE2 |
| Pin 23 | PF11 β GPIO / FMC_NCE4 |
| Pin 24 | PF12 β GPIO / FMC_A6 |
| Pin 25 | PF13 β GPIO / FMC_A7 |
| Pin 26 | PF14 β GPIO / FMC_A8 |
| Pin 27 | PF15 β GPIO / FMC_A9 |
| Pin 28 | PG0 β GPIO / FMC_A10 |
| Pin 29 | PG1 β GPIO / FMC_A11 |
| Pin 30 | PG2 β GPIO / FMC_A12 |
| Pin 31 | PG3 β GPIO / FMC_A13 |
| Pin 32 | PG4 β GPIO / FMC_A14 |
| Pin 33 | PG5 β GPIO / FMC_A15 |
| Pin 34 | VSS β Ground |
| Pin 35 | VDD β Power supply |
| Pin 36 | PG6 β GPIO / FMC_NE1 |
| Pin 37 | PG7 β GPIO / FMC_INT |
| Pin 38 | PG8 β GPIO / FMC_NCE2 |
| Pin 39 | PG9 β GPIO / FMC_NE2 |
| Pin 40 | PG10 β GPIO / FMC_NE3 |
| Pin 41 | PG11 β GPIO / FMC_NE4 |
| Pin 42 | PG12 β GPIO / FMC_NE4 |
| Pin 43 | PG13 β GPIO / FMC_A24 |
| Pin 44 | PG14 β GPIO / FMC_A25 |
| Pin 45 | PG15 β GPIO / FMC_SDNCAS |
| Pin 46 | PD0 β GPIO / FMC_D2 |
| Pin 47 | PD1 β GPIO / FMC_D3 |
| Pin 48 | PD2 β GPIO / FMC_D4 |
| Pin 49 | PD3 β GPIO / FMC_D5 |
| Pin 50 | PD4 β GPIO / FMC_D6 |
| Pin 51 | PD5 β GPIO / FMC_D7 |
| Pin 52 | PD6 β GPIO / FMC_D8 |
| Pin 53 | PD7 β GPIO / FMC_D9 |
| Pin 54 | VSS β Ground |
| Pin 55 | VDD β Power supply |
| Pin 56 | PD8 β GPIO / USART3_TX |
| Pin 57 | PD9 β GPIO / USART3_RX |
| Pin 58 | PD10 β GPIO / USART3_CK |
| Pin 59 | PD11 β GPIO / USART3_CTS |
| Pin 60 | PD12 β GPIO / USART3_RTS |
| Pin 61 | PD13 β GPIO / TIM4_CH2 |
| Pin 62 | PD14 β GPIO / TIM4_CH3 |
| Pin 63 | PD15 β GPIO / TIM4_CH4 |
| Pin 64 | PC0 β GPIO / ADC123_IN10 |
| Pin 65 | PC1 β GPIO / ADC123_IN11 |
| Pin 66 | PC2 β GPIO / ADC123_IN12 |
| Pin 67 | PC3 β GPIO / ADC123_IN13 |
| Pin 68 | PC4 β GPIO / ADC12_IN14 |
| Pin 69 | PC5 β GPIO / ADC12_IN15 |
| Pin 70 | VSS β Ground |
| Pin 71 | VDD β Power supply |
| Pin 72 | PB2 β GPIO / BOOT1 |
| Pin 73 | PE7 β GPIO / TIM1_ETR |
| Pin 74 | PE8 β GPIO / TIM1_CH1 |
| Pin 75 | PE9 β GPIO / TIM1_CH1N |
| Pin 76 | PE10 β GPIO / TIM1_CH2 |
| Pin 77 | PE11 β GPIO / TIM1_CH2N |
| Pin 78 | PE12 β GPIO / TIM1_CH3 |
| Pin 79 | PE13 β GPIO / TIM1_CH3N |
| Pin 80 | PE14 β GPIO / TIM1_CH4 |
| Pin 81 | PE15 β GPIO / TIM1_CH4N |
| Pin 82 | PB10 β GPIO / I2C2_SCL |
| Pin 83 | PB11 β GPIO / I2C2_SDA |
| Pin 84 | VSS β Ground |
| Pin 85 | VDD β Power supply |
| Pin 86 | PB12 β GPIO / SPI2_NSS |
| Pin 87 | PB13 β GPIO / SPI2_SCK |
| Pin 88 | PB14 β GPIO / SPI2_MISO |
| Pin 89 | PB15 β GPIO / SPI2_MOSI |
| Pin 90 | PD8 β GPIO / USART3_TX |
| Pin 91 | PD9 β GPIO / USART3_RX |
| Pin 92 | PD10 β GPIO / USART3_CK |
| Pin 93 | PD11 β GPIO / USART3_CTS |
| Pin 94 | PD12 β GPIO / USART3_RTS |
| Pin 95 | PD13 β GPIO / TIM4_CH2 |
| Pin 96 | PD14 β GPIO / TIM4_CH3 |
| Pin 97 | PD15 β GPIO / TIM4_CH4 |
| Pin 98 | PC6 β GPIO / TIM3_CH1 |
| Pin 99 | PC7 β GPIO / TIM3_CH2 |
| Pin 100 | PC8 β GPIO / TIM3_CH3 |
| Pin 101 | PC9 β GPIO / TIM3_CH4 |
| Pin 102 | PA0 β GPIO / ADC123_IN0 / WKUP |
| Pin 103 | PA1 β GPIO / ADC123_IN1 |
| Pin 104 | PA2 β GPIO / ADC123_IN2 / USART2_TX |
| Pin 105 | PA3 β GPIO / ADC123_IN3 / USART2_RX |
| Pin 106 | VSS β Ground |
| Pin 107 | VDD β Power supply |
| Pin 108 | PA4 β GPIO / ADC12_IN4 / DAC_OUT1 |
| Pin 109 | PA5 β GPIO / ADC12_IN5 / DAC_OUT2 |
| Pin 110 | PA6 β GPIO / ADC12_IN6 / TIM3_CH1 |
| Pin 111 | PA7 β GPIO / ADC12_IN7 / TIM3_CH2 |
| Pin 112 | PC4 β GPIO / ADC12_IN14 |
| Pin 113 | PC5 β GPIO / ADC12_IN15 |
| Pin 114 | PB0 β GPIO / ADC12_IN8 / TIM3_CH3 |
| Pin 115 | PB1 β GPIO / ADC12_IN9 / TIM3_CH4 |
| Pin 116 | PB2 β GPIO / BOOT1 |
| Pin 117 | PE7 β GPIO / TIM1_ETR |
| Pin 118 | PE8 β GPIO / TIM1_CH1 |
| Pin 119 | PE9 β GPIO / TIM1_CH1N |
| Pin 120 | PE10 β GPIO / TIM1_CH2 |
| Pin 121 | PE11 β GPIO / TIM1_CH2N |
| Pin 122 | PE12 β GPIO / TIM1_CH3 |
| Pin 123 | PE13 β GPIO / TIM1_CH3N |
| Pin 124 | PE14 β GPIO / TIM1_CH4 |
| Pin 125 | PE15 β GPIO / TIM1_CH4N |
| Pin 126 | PB10 β GPIO / I2C2_SCL |
| Pin 127 | PB11 β GPIO / I2C2_SDA |
| Pin 128 | VSS β Ground |
| Pin 129 | VDD β Power supply |
| Pin 130 | PB12 β GPIO / SPI2_NSS |
| Pin 131 | PB13 β GPIO / SPI2_SCK |
| Pin 132 | PB14 β GPIO / SPI2_MISO |
| Pin 133 | PB15 β GPIO / SPI2_MOSI |
| Pin 134 | PD8 β GPIO / USART3_TX |
| Pin 135 | PD9 β GPIO / USART3_RX |
| Pin 136 | PD10 β GPIO / USART3_CK |
| Pin 137 | PD11 β GPIO / USART3_CTS |
| Pin 138 | PD12 β GPIO / USART3_RTS |
| Pin 139 | PD13 β GPIO / TIM4_CH2 |
| Pin 140 | PD14 β GPIO / TIM4_CH3 |
| Pin 141 | PD15 β GPIO / TIM4_CH4 |
| Pin 142 | PC6 β GPIO / TIM3_CH1 |
| Pin 143 | PC7 β GPIO / TIM3_CH2 |
| Pin 144 | PC8 β GPIO / TIM3_CH3 |
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
STM32F446ZET6 is suitable for 6 applications: Motor Control, Industrial Automation, Medical Devices, Consumer Electronics, IoT Gateways, Audio Processing.
Motor Control
The STM32F446ZET6 is ideal for motor control applications due to its 180 MHz Cortex-M4F core with FPU, advanced timers with complementary PWM outputs, and high-speed ADCs. It supports field-oriented control (FOC) for BLDC, PMSM, and AC induction motors. The FPU accelerates complex mathematical computations, enabling real-time control loops. The device's rich peripheral set includes multiple timers for encoder feedback and PWM generation, and the ADC can sample current and voltage signals with high precision. In a typical motor control system, the STM32F446ZET6 reads current sensors via ADC, executes the FOC algorithm, and generates PWM signals to drive the inverter. The dead-time generation and break features ensure safe operation. Compared to lower-performance MCUs, the F446 provides higher control loop frequency and better dynamic response, reducing torque ripple and improving efficiency. Designers should ensure proper isolation and filtering of analog signals to maintain ADC accuracy.
Recommended
Industrial Automation
The STM32F446ZET6 is well-suited for industrial automation, including PLCs, robotics, and process control. Its 180 MHz core and extensive connectivity (CAN, UART, SPI, I2C) enable communication with sensors, actuators, and higher-level controllers. The FMC interface allows external memory expansion for data logging or large control programs. The device's robust design, with a wide temperature range and low-power modes, makes it reliable in harsh industrial environments. In a PLC, the STM32F446ZET6 can handle multiple I/O points, execute ladder logic, and communicate via Modbus or EtherCAT. The FPU accelerates PID control algorithms, improving response time. The RNG and cryptographic acceleration enhance security for industrial IoT applications. Designers should consider using the STM32F446ZET6's DMA to offload data transfer from the CPU, ensuring real-time performance. The device's 5V-tolerant I/O pins simplify interfacing with industrial sensors and actuators.
Recommended
Medical Devices
The STM32F446ZET6 is used in medical devices such as patient monitors, infusion pumps, and diagnostic equipment. Its high performance enables real-time signal processing, while its low-power modes extend battery life in portable devices. The device's multiple ADCs and DACs allow precise analog signal acquisition and generation. In a patient monitor, the STM32F446ZET6 can process ECG, SpO2, and blood pressure signals, displaying waveforms on an LCD via the FMC interface. The FPU accelerates digital filtering algorithms, improving signal quality. The device's security features (RNG, crypto) protect patient data. Designers must ensure compliance with medical standards (IEC 60601) and implement proper isolation for patient-connected circuits. The STM32F446ZET6's wide supply voltage range (1.8V-3.6V) allows operation from a single lithium-ion battery. The RTC enables timestamping of patient data.
Recommended
Consumer Electronics
The STM32F446ZET6 is used in consumer electronics such as smart appliances, audio systems, and gaming peripherals. Its high clock speed and rich peripherals enable advanced user interfaces, audio processing, and connectivity. In a smart speaker, the STM32F446ZET6 can handle voice recognition, audio playback, and Wi-Fi communication via an external module. The I2S interface supports high-quality audio codecs, and the FPU accelerates audio effects. The device's USB OTG allows direct connection to smartphones for firmware updates or data transfer. The FMC can drive TFT-LCD displays for touch interfaces. Designers can leverage the STM32F446ZET6's low-power modes to meet energy efficiency standards. The device's small form factor (LQFP144) and wide temperature range make it suitable for consumer products. The RNG and crypto acceleration enhance security for smart home applications.
Recommended
IoT Gateways
The STM32F446ZET6 is an excellent choice for IoT gateways that aggregate data from multiple sensors and communicate with the cloud. Its multiple UARTs, SPIs, and I2Cs allow connection to various sensors and communication modules (e.g., LoRa, Zigbee, Wi-Fi). The 180 MHz core can handle protocol stacks and data processing. The FMC interface can expand memory for buffering data. In a typical IoT gateway, the STM32F446ZET6 collects sensor data via UART or SPI, processes it, and forwards it to the cloud via Ethernet or Wi-Fi. The device's security features (RNG, crypto) ensure secure communication. The low-power modes enable battery-powered gateways. Designers should consider using the STM32F446ZET6's DMA to handle high data rates without CPU intervention. The device's wide supply voltage range and temperature range make it suitable for outdoor deployments.
Recommended
Audio Processing
The STM32F446ZET6 is well-suited for audio processing applications such as audio interfaces, effects processors, and voice-controlled devices. Its 180 MHz Cortex-M4F core with FPU accelerates DSP algorithms like filtering, FFT, and audio effects. The device features a dedicated audio PLL and multiple I2S interfaces with full-duplex support, enabling high-quality audio streaming. In an audio interface, the STM32F446ZET6 can handle multiple channels of audio input/output, apply effects, and communicate with a host via USB. The FPU enables real-time processing of audio signals with low latency. The device's DACs can generate analog audio output directly. Designers should use the audio PLL to generate precise clock frequencies for I2S, reducing jitter. The STM32F446ZET6's large SRAM (128 KB) allows buffering of audio data. The device's low-power modes are beneficial for portable audio devices.
Recommended
Recommended Products Summary
Engineering reference data for STM32F446ZET6 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | STM32F446ZET6TR | STM32F446ZET6Q | STM32F446ZET7 |
|---|---|---|---|---|
| Package | LQFP144 | LQFP144 | LQFP144 | LQFP144 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Core | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F |
| Maximum Clock Speed | 180 MHz | 180 MHz | 180 MHz | 180 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB |
| Operating Temperature Range | -40Β°C to +85Β°C | -40Β°C to +85Β°C | -40Β°C to +105Β°C | -40Β°C to +85Β°C |
| Number of I/O Pins | 114 | 114 | 114 | 114 |
Key Differentiators
- Higher clock speed (180 MHz) than many competitors (vs STM32F407ZET6 (168 MHz))
- Dedicated audio PLL (vs STM32F407ZET6)
- More SRAM (128 KB) than some alternatives (vs STM32F446RET6 (128 KB SRAM))
Design Notes
The STM32F446ZET6 requires a stable power supply. Decouple each VDD pin with a 100nF ceramic capacitor placed as close as possible to the pin, and add a 4.7uF bulk capacitor per power domain. The VDDA pin should be connected to a filtered analog supply using a ferrite bead and a 1uF capacitor to reduce noise for ADC accuracy. Ensure VSS and VSSA are connected to a solid ground plane.
For the LQFP144 package, use a 4-layer PCB with a dedicated ground plane and power plane. Place the crystal oscillator (HSE) and load capacitors close to the OSC_IN/OSC_OUT pins, with a ground guard ring to minimize noise. Keep high-speed signals (e.g., FMC, USB) away from analog pins to reduce crosstalk. Use via stitching around the ground plane to reduce EMI.
A common mistake is forgetting to configure the BOOT0 and BOOT1 pins correctly. BOOT0 must be pulled low for normal boot from flash. Also, ensure the NRST pin has a 100nF capacitor to ground for reliable reset. When using the FMC, verify the timing parameters for external memory to avoid data corruption. For USB HS, an external PHY is required; do not connect the USB DP/DM directly to the MCU without a PHY.
Compliance Information
RoHS and REACH compliant per STMicroelectronics product page. Not AEC-Q100 qualified; for automotive, consider STM32F446ZET6Q (extended temp) but still not AEC-Q100.
