Product overview
Description
The STM32F446xC/E devices are based on the high-performance Arm® Cortex®-M4 32-bit RISC core operating at a frequency of up to 180 MHz. The Cortex-M4 core features a floating point unit (FPU) single precision supporting all Arm® single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) that enhances application security.
The STM32F446xC/E devices incorporate high-speed embedded memories (Flash memory up to 512 Kbytes, up to 128 Kbytes of SRAM), up to 4 Kbytes of backup SRAM, and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.
All devices offer three 12-bit ADCs, two DACs, a low-power RTC, twelve general-purpose 16-bit timers including two PWM timers for motor control, two general-purpose 32-bit timers.
They also feature standard and advanced communication interfaces.
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All features
- 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 Kbytes of Flash memory
- 128 Kbytes of SRAM
- Flexible external memory controller with up to 16-bit data bus: SRAM, PSRAM, SDRAM/LPSDR SDRAM, NOR/NAND Flash memories
- Dual mode QuadSPI 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
- VBAT supply for RTC, 20×32 bit backup registers plus optional 4 KB backup SRAM
- 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 four IC/OC/PWM or pulse counter
- Debug mode
- SWD and 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 four USARTs and two UARTs (11.25 Mbit/s, ISO7816 interface, LIN, IrDA, modem control)
- Up to four SPIs (45 Mbits/s), three with muxed I2S for audio class accuracy via internal audio PLL or external clock
- 2x 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
Circuit Diagram
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All resources
| Resource title | Version | Latest update |
|---|
System View Description (1)
| Resource title | Version | Latest update | |||
|---|---|---|---|---|---|
| ZIP | 2.0 | 12 Feb 2024 | 12 Feb 2024 |
IBIS models (1)
| Resource title | Version | Latest update | |||
|---|---|---|---|---|---|
| ZIP | 1.0 | 30 Mar 2016 | 30 Mar 2016 |
BSDL files (1)
| Resource title | Version | Latest update | |||
|---|---|---|---|---|---|
| ZIP | 1.0 | 13 Jan 2016 | 13 Jan 2016 |
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Longevity Commitment | Longevity Starting Date | Material Declaration** |
|---|---|---|---|---|---|---|---|
| STM32F446RET6 | Active | LQFP 64 10x10x1.4 mm | Industrial | Ecopack2 | 10 | 2026-01-01T00:00:00.000+01:00 | |
| STM32F446RET6TR | Active | LQFP 64 10x10x1.4 mm | Industrial | Ecopack2 | 10 | 2026-01-01T00:00:00.000+01:00 | |
| STM32F446RET7 | Active | LQFP 64 10x10x1.4 mm | Industrial | Ecopack2 | 10 | 2026-01-01T00:00:00.000+01:00 | |
| STM32F446RET7TR | Active | LQFP 64 10x10x1.4 mm | Industrial | Ecopack2 | 10 | 2026-01-01T00:00:00.000+01:00 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | D/A Converters (typ) (12-bit) | Timers (typ) (16-bit) | Timers (typ) (32-bit) | Number of Channels (typ) | SMPS | Number of Channels (typ) | UART (typ) | I/Os (High Current) | Integrated op-amps | Comparator | SPI (typ) | USART (typ) | Number of Channels (typ) | I2S (typ) | Advanced Motor Control Timers | CAN (2.0) | CAN (FD) | Ethernet | ||
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| STM32F446RET7TR | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32F446RET6TR | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32F446RET6 | | | distributors No availability of distributors reported, please contact our sales office |
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| STM32F446RET7 | | | distributors No availability of distributors reported, please contact our sales office |
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STM32F446RET7TR Active
STM32F446RET6TR Active
STM32F446RET6 Active
STM32F446RET7 Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors