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32bit MCU series integrates ARM Cortex M7 core

Posted: 30 Sep 2014 ?? ?Print Version ?Bookmark and Share

Keywords:Cortex M7? MCU? STM32 F7?

STMicroelectronics released a 32bit MCU series that leverages the ARM Cortex M7 core, boasting delivery of up to twice as much processing and DSP performance that is accessible via a seamless upgrade path.

The STM32 F7 MCU series operates at frequencies up to 200MHz and uses a 6-stage superscalar pipeline and floating point unit (FPU) to produce up to 1000 CoreMarks. The devices integrate two independent mechanismsadaptive real-time (ART) accelerator and L1 cache for both execution and data accessto achieve zero-wait-state performance from both internal and external memories.

The company said that the higher performance of the MCUs has not impacted power efficiency. Despite greater functionality, the series consumes current at 7 CoreMarks/mW in run mode, and 120?A in STOP mode with all contexts and SRAM content saved, 1.7?A in STANDBY mode and 0.1?A in VBAT mode.

In addition to ART accelerator and 4KB instruction and data caches, the STM32 F7 touts smart and flexible system architecture: an AXI and Multi-AHB (advanced high-performance bus) matrix with dual general-purpose DMA controllers and dedicated DMA controllers for Ethernet, USB OTG HS (on-the-go high speed), and hardware acceleration of graphics via ST's Chrom-ART accelerator.


AXI-AHB bus matrix architecture (large wires for 64bit bus and thin wires for 32bit bus). Source: ST

The STM32 F7 is manufactured on ST's 90nm embedded-non-volatile memory CMOS process technology, with the STM32F756NG MCU from the series now available for sampling.

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