Datasheet

Description STM32F446xC/E
12/202 DocID027107 Rev 6
2 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 which supports 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) which enhances application security.
The STM32F446xC/E devices incorporate high-speed embedded memories (Flash memory
up to 512 Kbyte, up to 128 Kbyte 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.
• Up to four I
2
Cs;
• Four SPIs, three I
2
Ss full simplex. To achieve audio class accuracy, the I
2
S peripherals
can be clocked via a dedicated internal audio PLL or via an external clock to allow
synchronization;
• Four USARTs plus two UARTs;
• An USB OTG full-speed and an USB OTG high-speed with full-speed capability (with
the ULPI), both with dedicated power rails allowing to use them throughout the entire
power range;
• Two CANs;
• Two SAIs serial audio interfaces. To achieve audio class accuracy, the SAIs can be
clocked via a dedicated internal audio PLL;
• An SDIO/MMC interface;
• Camera interface;
• HDMI-CEC;
• SPDIF Receiver (SPDIFRx);
• QuadSPI.
Advanced peripherals include an SDIO, a flexible memory control (FMC) interface, a
camera interface for CMOS sensors. Refer to
Table 2: STM32F446xC/E features and
peripheral counts for the list of peripherals available on each part number.
The STM32F446xC/E devices operates in the –40 to +105 °C temperature range from a 1.7
to 3.6
V power supply.
The supply voltage can drop to 1.7 V with the use of an external power supply supervisor
(refer to
Section 3.16.2: Internal reset OFF). A comprehensive set of power-saving mode
allows the design of low-power applications.
The STM32F446xC/E devices offer devices in 6 packages ranging from 64 pins to 144 pins.
The set of included peripherals changes with the device chosen.
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