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STMicroelectronics STM32F446RET6TR — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM32F446RET6TR ARM Cortex-M4 MCU, 180MHz, 512KB Flash, 64-LQFP

MPNSTM32F446RET6TR
End of Life

STMicroelectronics STM32F4 series ARM Cortex-M4 MCU, STM32F446RET6TR, 180MHz, 512KB Flash, 128KB RAM, 1.7-3.6V supply, 50 GPIO, 64-LQFP (10x10mm), -40 to 85°C TA.

$12.1300Ref. price · indicative, final on quote
STMicroelectronics STM32F446RET6TR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32F446RET6TR 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
PackageTape & Reel (TR); Cut Tape (CT)
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)50
Core processorARM® Cortex®-M4
Case64-LQFP
Data convertersA/D 16x12b; D/A 2x12b
Program memory size512KB (512K x 8)

Product details

The STM32F446RET6TR is a 32-bit ARM Cortex-M4 MCU from STMicroelectronics' STM32F4 series, clocked at 180 MHz with 512 KB of Flash and 128 KB of RAM. It operates from 1.7 V to 3.6 V and includes a full set of peripherals: CANbus, USB OTG, multiple I²C and SPI interfaces, a 16-channel 12-bit ADC, and a 2-channel 12-bit DAC. The 180 MHz core delivers enough throughput for real-time motor control, digital power conversion, and audio processing without needing an external DSP. The 64-LQFP (10x10 mm) package fits medium-density PCB layouts common in industrial drives and IoT gateways.

Industrial temperature range — deployment context

It is not qualified for under-hood automotive use.

End-of-life — sourcing reality

The STM32F446RET6TR is marked end-of-life. No official successor is listed. For existing BOM lines, a last-time-buy or surplus-channel procurement is the path forward.

Packaging — Cut Tape or full reel

The Cut Tape variant lets you buy small quantities for prototyping or low-volume production without committing to a full reel. Store the reels dry — the 64-LQFP is moisture-sensitive and needs a dry cabinet or bake before reflow if the seal is broken.

Frequently asked questions

What is a drop-in replacement for STM32F446RET6TR?

The STM32F446RE (without the 'T' suffix) is the closest pin-compatible alternative — same 64-LQFP package, same 180 MHz Cortex-M4 core, same 512 KB Flash and 128 KB RAM. Verify the exact silicon revision and errata with your application before swapping.

Can I buy STM32F446RET6TR in cut tape or only full reel?

This order code supports both Tape & Reel (TR) and Cut Tape (CT) options. Cut Tape is available for small-volume orders, so you are not forced to buy a full reel for prototyping or low-run production.