STM32 MCUs with ARM Cortex-M7 processors and graphics performance


STMICROELECTRONICS has released new graphics-centric STM32 microcontrollers utilising ARM Cortex-M7 processors.

The new STM32F767/769 microcontrollers (MCUs) have rich memory, graphics and communication peripherals, allowing their use in a wide range of applications such as portable or wearable consumer devices, smart-building and industrial controllers, smart appliances, and personal or point-of-care medical equipment.

The new MCUs are particularly well suited to simplifying the design of high-performance controls and user interfaces. They featue a 216MHz/462DMIPS/1082 EEMBC CoreMark Cortex-M7 core with double-precision floating-point unit and DSP instructions.

Integrated alongside the core are up to 2MB of dual-bank Flash, ST’s Chrom-ART Accelerator for powerful graphics performance, a hardware JPEG accelerator, TFT-LCD controller, and MIPI-DSI host controller.

The integrated on-chip features means rich rendering for graphic applications beyond the capabilities of other microcontrollers. Audio functionality is also catered for, with an I2S interface, Serial Audio Interface (SAI), audio PLLs, and DFSDM (Digital Filter for Sigma-Delta Modulators) for connecting a digital microphone or external Sigma-Delta ADC.

The STM32F767/769 feature 512KB of integrated RAM, and 16KB Data and Instruction caches, while the Flexible Memory Controller (FMC) and Quad-SPI interface simplify off-chip memory expansion allowing practically unlimited application code size. The on-chip Flash allows read-while-write for seamless application performance and continuous operation even while simultaneously updating software.

Additionally, the STM32F777/779 devices providing the option of a crypto/hash engine (with) for security-conscious applications. Designers can also quickly upgrade to these new MCUs from the STM32F469/479 Cortex-M4 devices that have similar graphics and memory features.