STM32F446RE中文资料意法半导体数据手册PDF规格书

特性 Features

• Core: ARM® 32-bit Cortex®-M4 CPU with FPU,

Adaptive real-time accelerator (ART

Accelerator™) allowing 0-wait state execution

from Fl ash 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

– VBAT supply for RTC, 20×32 bit backup

registers + 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 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