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STMicroelectronics STM32F446ZET6 — Microcontrollers & Processors (MCU / MPU / DSP)

STMicroelectronics STM32F446ZET6 MCU, ARM Cortex-M4, 180MHz

MPNSTM32F446ZET6
Active

STMicroelectronics STM32F4 series, STM32F446ZET6, ARM Cortex-M4 32-bit MCU, 180MHz, 512KB Flash, 128K x 8 RAM, 114 I/O, CANbus, USB OTG, 1.7V-3.6V, -40°C to 85°C, 144-LQFP.

$11.3000Ref. price · indicative, final on quote
Packaging144-LQFP
RoHSROHS3 Compliant
SeriesSTM32F4
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32F446ZET6 specifications
ParameterValue
SeriesSTM32F4
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.7V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed180MHz
PackageTray
RAM size128K x 8
Core size32-Bit Single-Core
PeripheralsBrown-out Detect/Reset, DMA, I²S, LVD, POR, PWM, WDT
ConnectivityCANbus, EBI/EMI, I²C, IrDA, LINbus, SAI, SD, SPDIF-Rx, SPI, UART/USART, USB, USB OTG
Number of i (O)114
Core processorARM® Cortex®-M4
Case144-LQFP
Data convertersA/D 24x12b; D/A 2x12b
Program memory size512KB (512K x 8)

Product details

180 MHz Cortex-M4 with DSP and FPU — the performance baseline

The 114 available GPIOs in the 144-LQFP package give enough headroom for parallel buses, sensor arrays, and human-machine interface panels without needing port expanders.

Peripheral set — how many external chips it replaces

The connectivity block covers CANbus, USB OTG (host and device), multiple SPI and I²C buses, UART/USART with LIN and IrDA support, plus an SAI for serial audio and a SPDIF-Rx interface for digital audio input. The EBI/EMI memory controller can gluelessly attach external SRAM, NOR Flash, or LCD panels. Brown-out detect, POR, and a programmable voltage detector are built in, reducing the need for discrete supervisor ICs.

Frequently asked questions

What are the alternatives to STM32F446ZET6?

The STM32L151CBU6A is a lower-power ARM Cortex-M3 part from the STM32L1 series, but it runs at 32 MHz with 37 I/O and lacks the DSP/FPU, the 180 MHz core speed, the 512 KB Flash, and the 114 I/O count of the STM32F446ZET6. It is not a pin-compatible or performance-equivalent second source — it serves a different power-versus-performance trade-off.

What development board supports STM32F446ZET6?

STMicroelectronics offers the NUCLEO-F446ZE and the STM32F446E-EVAL evaluation board for this MCU. Both provide access to the full peripheral set and are suitable for prototyping and firmware development.

Is STM32F446ZET6 compatible with STM32F429?

Both are STM32F4 series Cortex-M4 MCUs, but the STM32F429 typically offers a higher memory density, a TFT-LCD controller, and a different pinout in the same 144-LQFP package. Software migration is straightforward within the STM32Cube ecosystem, but a board-level hardware review is required due to peripheral and pin assignment differences.