STM32F446 product line enables high performance and rich connectivity in a highly integrated and energy efficient product, starting from 256 K flash.
It leverages ST’s proprietary ART Accelerator™, smart architecture, advanced Flash technology and its embedded ARM Cortex-M4 core to achieve leading performance of 225 DMIPS and 608 CoreMark® at 180MHz executing from embedded Flash.
Efficient simultaneous communication via multiple interfaces enables smarter and more interactive industrial, scientific, medical, and Internet-of-Things (IoT) applications, while the advanced process technology, together with dynamic voltage scaling, extensive clock gating and flexible sleep modes allow for significant power savings.
Performance:
At 180 MHz, the STM32F446 delivers 225 DMIPS/608 CoreMark performance executing from Flash memory, with 0-wait states thanks to ST’s ART Accelerator. The DSP instructions and the floating point unit enlarge the range of addressable applications.
Power efficiency: ST’s 90 nm process, ART Accelerator and the dynamic power scaling enables the current consumption in run mode and executing from Flash memory to be as low as 200 µA/MHz at 180 MHz. In Stop mode, the power consumption is 50 µA typical.
Integration:
- 2 dedicated audio PLL, SPDIF input, 3 half duplex I²S , and 2 serial audio interfaces (SAI) supporting full duplex I²S as well as time division multiplex (TDM) mode.
- Up to 20 communication interfaces (including 4x USARTs plus 2x UARTs running at up to 11.25 Mbit/s, 4x SPI running at up to 45 Mbit/s, 3x I²C with a new optional digital filter capability, 2x CAN, SDIO, HDMI CEC and camera interface)
- Two 12-bit DACs, three 12-bit ADCs reaching 2.4 MSPS or 7.2 MSPS in interleaved mode
- Up to 17 timers: 16- and 32-bit running at up to 180 MHz
- Easily extendable memory range using the flexible 90 MHz memory controller with a 32-bit parallel interface, and supporting Compact Flash, SRAM, PSRAM, NOR, NAND and SDRAM memories
- Cost effective NOR flash extension thanks to the 90MHz Dual quadSPI interface supporting memory mapped mode
The STM32F446 product line provides from 256-Kbyte to 512-Kbyte Flash, 128-Kbyte SRAM and from 64 to 144 pins in packages as small as 3.85 x 3.728 mm.
Core
- ARM® 32-bit Cortex®-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait state execution from flash memory, frequency up to 180 MHz, MPU, 225 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions
Memories
- 512 kB of Flash memory
- 128 KB of SRAM
- Flexible external memory controller with up to 16-bit data bus: SRAM,PSRAM,SDRAM/LPSDR SDRAM, Flash NOR/NAND memories
- Dual mode Quad SPI interface
LCD parallel interface, 8080/6800 modes
Clock, reset and supply management
- 1.7 V to 3.6 V application supply and I/Os
- POR, PDR, PVD and BOR
- 4-to-26 MHz crystal oscillator
- Internal 16 MHz factory-trimmed RC (1% accuracy)
- 32 kHz oscillator for RTC with calibration
- Internal 32 kHz RC with calibration
Low power
- Sleep, Stop and Standby modes
- VBATsupply for RTC, 20×32 bit backup registers + optional 4 KB backup SRAM
Converters
- 3×12-bit, 2.4 MSPS ADC: up to 24 channels and 7.2 MSPS in triple interleaved mode
- 2×12-bit D/A converters
- General-purpose DMA: 16-stream DMA controller with FIFOs and burst support
Up to 17 timers:
- 2x watchdog, 1x SysTick timer and up to twelve 16-bit and two 32-bit timers up to 180 MHz, each with up to 4 IC/OC/PWM or pulse counter
Debug mode
- SWD & JTAG interfaces
- Cortex®-M4 Trace Macrocell™
Up to 114 I/O ports with interrupt capability
- Up to 111 fast I/Os up to 90 MHz
- Up to 112 5 V-tolerant I/Os
Up to 20 communication interfaces
- SPDIF-Rx
- Up to 4 × I2C interfaces (SMBus/PMBus)
- Up to 4 USARTs/2 UARTs (11.25 Mbit/s, ISO7816 interface, LIN, IrDA, modem control)
- Up to 4 SPIs (45 Mbits/s), 3 with muxed I2S for audio class accuracy via internal audio PLL or external clock
- 2 x SAI (serial audio interface)
- 2 × CAN (2.0B Active)
- SDIO interface
- Consumer electronics control (CEC) I/F
Advanced connectivity
- USB 2.0 full-speed device/host/OTG controller with on-chip PHY
- USB 2.0 high-speed/full-speed device/host/OTG controller with dedicated DMA, on-chip full-speed PHY and ULPI
- Dedicated USB power rail enabling on-chip PHYs operation throughout the entire MCU power supply range
8- to 14-bit parallel camera interface up to 54 Mbytes/s
CRC calculation unit
RTC: subsecond accuracy, hardware calendar
96-bit unique ID
Applications
- Motor drive and application control
- Medical equipment
- Industrial applications: PLC, inverters, circuit breakers
- Printers, and scanners
- Alarm systems, video intercom, and HVAC
- Home audio appliances
