Micros

Dynamic voltage scaling cuts MCU power consumption

7th December 2014
Mick Elliott
0

Farnell element14 has stock availability of STMicroelectronics‘ STM32 L0.The combination of an ARM Cortex-M0+ core and STM32 ultra-low-power features, makes the STM32 L0 an ideal solution for applications operating on battery or supplied by energy harvesting. The device’s dynamic voltage scaling further reduces the device's power consumption, by on-the-fly adaptation of the digital supply voltage to the operating speed.

Wakeup current peaks can be reduced to industry's lowest values leading to savings in terms of decoupling capacitors on the supply line and an ultra-low-power oscillator achieves 87µA/MHz in run mode

The microcontroller also offers a wide range of functionalities, such as an LCD interface, comparator, DAC and hardware encryption.

The load on the ARM Cortex-M0+ core has been reduced by new autonomous peripherals (including USART, I²C, touch sense controller), leading to fewer CPU wakeups and contributing to decreased processing time and power consumption.

Other value-added features such as 16-bit ADC (HW oversampling), crystal-less USB, short wake-up time and communication peripherals capable of operating in ultra-low-power mode make up for an unrivalled balance of feature integration, performance and ultra-low-energy consumption.

The microcontroller is available with up to 64 Kbytes of Flash, 8 Kbytes of RAM and up to 2 Kbytes of embedded EEPROM (no emulation needed) in 32- to 64-pin packages, including a space-saving WLCSP36

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