STM32F427/437 Microcontrollers, STMicroelectronics STMicroelectronics STM32 F427 and STM32 F437 MCU are based on the ARM^® Cortex™ M4 microcontroller with 180 MHz CPU operating up to 256 KB SRAM and up to 2 MB of dual bank Flash with SDRAM interface and Chrom-ART Accelerator™. The STM32F437 crypto/hash processor provides hardware acceleration for AES 128, 192, 256, Triple DES, and hash (MD5, SHA-1).
ST’s STM32 F427/437 with industry standard Cortex™ M4 core architecture offers enhanced I/Os and peripherals including Serial audio interface (SAI), DACs, ADCs, 16-bit/32-bit timers, true number random generator (RNG) and RTC. As well as power saving modes that allow the design of low-power applications. In addition to this it has an Ethernet MAC and camera interface for CMOS sensors. The STM32 F427/437 32-bit Flash MCUs feature a Floating point unit (FPU) with digital signal processing (DSP) instructions and a memory protection unit (MPU) which enhances application security.

Ideal in medical applications, alarm systems, PLCs and industrial applications as well as application control and user interfaces.
ARM 32-bit Cortex™ M4 CPU with FPU
Chrom-ART Accelerator™
Adaptive real-time accelerator (ART Accelerator™)
Flash memory: up to 2 MB; SRAM: Up to 256,4 KB back up RAM (includes 64 KB of CCM (core coulped memory) data RAM
Power supply: 1.8 V to 3.6 V
Timers: 16-bit and 32-bit timers
DACs, 12-bit ADCs
Real time clock (RTC)
True random number generator (RNG)
Crypto/hash processor (STM32F437 only)
Audio connectivity: dedicated audio PLL, I²S, serial audio interface (SAI)
Communication interfaces: USARTs, UARTs, SPI, I²C, CAN and SDIO
Extendable memory range: flexible memory controller and supports the Compact Flash, SRAM, PSRAM, NOR and NAND and SDRAM memories