No last-time-buy window is open, and no end-of-life notice is on record. For a BOM freeze or a multi-year production run, this part does not introduce obsolescence risk at the component level. The base product number is STM32F446, which covers multiple density and package variants. If a future design requires more Flash or a different footprint, the family shares the same core and peripheral set, so migration stays within the same toolchain and software investment.
ST STM32F446MCY6TR ARM Cortex-M4 MCU, 180 MHz, 256 KB Flash
MPNSTM32F446MCY6TR
End of Life
ST STM32F4 series, 32-bit ARM Cortex-M4 single-core MCU, 180 MHz, 256 KB Flash, 128 KB RAM, 14×12b ADC, 2×12b DAC, 63 I/O, CANbus, USB OTG, 1.7–3.6 V supply, -40 to 85 °C, 81-UFBGA WLCSP package, Tape & Reel.
$9.0000Ref. price · indicative, final on quote
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Specifications
| Parameter | Value |
|---|---|
| Series | STM32F4 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.7V ~ 3.6V |
| Operating temperature | -40°C~85°C(TA) |
| Speed | 180MHz |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| RAM size | 128K x 8 |
| Core size | 32-Bit Single-Core |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, LVD, POR, PWM, WDT |
| Connectivity | CANbus, EBI/EMI, I²C, IrDA, LINbus, SAI, SD, SPDIF-Rx, SPI, UART/USART, USB, USB OTG |
| Number of i (O) | 63 |
| Core processor | ARM® Cortex®-M4 |
| Case | 81-UFBGA, WLCSP |
| Data converters | A/D 14x12b; D/A 2x12b |
| Program memory size | 256KB (256K x 8) |
Product details
Frequently asked questions
Is STM32F446MCY6TR going end of life?
No. The STM32F446MCY6TR carries an Active product status, so no end-of-life notice is in effect. ST continues to manufacture the part.
What is the closest pin-compatible alternative to STM32F446MCY6TR?
Within the STM32F446 family, the STM32F446RET6 uses the same core and peripherals but comes in an LQFP-64 package instead of the WLCSP. The pinout differs due to the package change, so a board redesign is required. For a drop-in WLCSP replacement, check the STM32F446MCT6 or STM32F446MEY6 variants — they share the same 81-ball footprint with different Flash densities.
Where can I buy STM32F446MCY6TR in tape and reel?
The STM32F446MCY6TR is available in Tape & Reel packaging and is sourced to order against an RFQ. Contact our sales desk for a quote and current lead time.
What is STM32F446MCY6TR's listed speed?
The core runs at 180 MHz, which is the maximum clock for the STM32F446 series. That clock rate supports single-cycle DSP instructions and hardware floating-point operations.
Does STM32F446MCY6TR have the same pinout as STM32F446RET6?
No. The STM32F446MCY6TR uses an 81-ball WLCSP package, while the STM32F446RET6 comes in an LQFP-64. The ball/pin assignments and count differ, so a direct PCB replacement is not possible without a layout change.