Posted on June 26, 2014 at 16:58
The STM32F411 Dynamic Efficiency line brings innovative Batch Acquisition Mode (BAM) to extend battery life with always-on system awareness
http://www.st.com/web/en/catalog/mmc/FM141/SC1169/SS1577/LN1877
MCUs improve the power-saving performance of data batching –the technique also used in Google’s latest Android 4.4 (KitKat) operating system to maximize battery life- and extend the advantages to many more applications besides smartphones and tablets.The STM32F411:
- Is the entry level to the STM32F4 high-performance series. - Features the ARM® Cortex®-M4 processor core with DSP and Floating-Point Unit (FPU) - Has up to 512Kbyte of Flash with high SRAM capacity of up to 128Kbyte - Minimizes dynamic power and boosts processing performance thanks to the ST’s ART Accelerator™ branch cache, 90nm process, and voltage-scaling capability - Is the first M4-class device to achieve RUN mode current of 100µA/MHz executing EEMBC® CoreMark™ code from Flash with peripherals off while also being able to run up to 100MHz to deliver 125DMIPS. - Has very low current in STOP mode (just 10µA typical with all SRAM content and context saved) - Embeds the new Batch Acquisition Mode (BAM) which saves up to 50% extra power by storing sensor data directly into SRAM while its own CPU core sleeps. The core wakes briefly to process this stored data before returning to power-saving mode. - Has compact packages down to 3.034mm x 3.22mm
The peripheral set includes:
- a 12-bit 16-channel ADC up to 2.4Msample/s - up to 11 timers including motor-control timer and general-purpose 16-bit and 32-bit timers - 3 I2C ports up to 1Mbit/s - 3 USARTs up to 12.5Mbit/s - a USB 2.0 OTG Full Speed interface with embedded PHY - 5 five SPI ports up to 50Mbit/s with five I2S audio interfaces - an SD/MMC interfaceThe STM32F411 is in production now, and is supported with a development ecosystem including:
- thehttp://www.st.com/web/en/catalog/tools/FM116/SC959/SS1532/LN1847/PF260320
open hardware platform -http://www.st.com/web/catalog/tools/FM147/CL1794/SC961/SS1533/PF259242
software tools and embedded software A Discovery kit will also be available in Q4 2014. STM32F411