TI new ultra-low power MCUs boost battery life - Embedded.com

TI new ultra-low power MCUs boost battery life


Texas Instruments' new MSP430F525x microcontrollers (MCUs) reduce power consumption in “always on” applications like smart phones, tablets and accessories. Developers who transfer sensor hub, keyboard control, and battery/power management functionalities to MSP430F525x MCUs can create portable consumer devices that put power-hungry application processors and touch screen controllers on standby instead of draining the system’s battery.

MSP430F525x MCUs feature a 1.8V split-rail I/O architecture that allows seamless interface to the application processor without needing an external level shifting circuit. Smartphones, tablets and accessories can maintain I/O at 1.8V while operating the MCU at maximum performance. With a wake-up time of 3.5µs and as little as 1.6µA power consumption in standby mode, TI claims these microcontrollers can extend battery life in portable consumer products from hours to days, while simultaneously reducing board space and system cost.

The new 16-bit MCUs also include additional RAM, I/O and serial interfaces to handle complex sensor algorithms, aggregation and monitoring functionalities quicker.


  • Four USCI_A and four USCI_B interfaces so developers have up to eight serial interfaces (four I2C and four SPI) for fast and robust communication to sensors or peripheral devices
  • Up to 35 general-purpose I/O can be used in the 1.8V voltage rail to conserve energy by switching off power supplies to components that are not in active use
  • Low-power peripherals include four 16-bit timers, a high-performance 10-bit analog-to-digital converter (ADC), hardware multiplier, DMA, comparator, and real-time clock module with alarm capabilities
  • Active power at 290µA/MHz in Flash and 150µA/MHz in RAM, standby mode at 1.6µA (3V) and ultra-fast wakeup at 3.5µs allows developers to implement differentiated features while maintaining ultra-low power consumption

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