180 MHz Cortex-M4 with 256 KB Flash — fit for industrial control and audio pipelines
The STM32F446RCT7TR is a 32-bit ARM Cortex-M4 single-core MCU from STMicroelectronics' STM32F4 series, clocked at 180 MHz with 256 KB Flash and 128 KB RAM. It carries 50 I/O lines, a 16-channel 12-bit ADC, a 2-channel 12-bit DAC, and connectivity spanning CANbus, USB OTG, SAI, and SPDIF-Rx. The -40°C to 105°C operating range and 1.7 V to 3.6 V supply make it a candidate for motor drives, outdoor telecom, and industrial sensor hubs where extended temperature and mixed-signal integration are required.
180 MHz — what it buys you on the bus
The Cortex-M4 core runs at 180 MHz. The 256 KB Flash and 128 KB RAM support real-time control loops and DMA transfers.
Lifecycle: EOL hot — plan the last-time buy now
STMicroelectronics lists the STM32F446RCT7TR as EOL hot. The last-time-buy window is open.
Peripheral set and package — board-level fit
The 64-LQFP (10x10 mm) package with 50 I/O fits two-layer boards where trace routing is tight. The CANbus and USB OTG interfaces allow direct connection to industrial fieldbus and a host PC for firmware updates or data logging. SAI and SPDIF-Rx support digital audio input — useful for audio-over-IP gateways or smart speakers.