The TI MSP430™ family of ultra-low-power
microcontrollers consists of several devices featuring different sets of peripherals targeted for
various applications. The architecture, combined with extensive low-power modes, is optimized to
achieve extended battery life in portable measurement applications. The device features a powerful
16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code
efficiency. The digitally controlled oscillator (DCO) allows the device to wake up from low-power
modes to active mode in 3.5 µs (typical).
The MSP430F522x series are microcontrollers with four 16-bit timers, a high-performance
10-bit ADC, two universal serial communication interfaces (USCIs), a hardware multiplier, DMA, a
comparator, and an RTC module with alarm capabilities.
The MSP430F521x series include all of the peripherals of the MSP430F522x series with
the exception of the ADC.
All devices have a split I/O supply system that allows for a seamless interface to
other devices that have a nominal 1.8-V I/O interface without the need for external level
For complete module descriptions, see the MSP430F5xx
and MSP430F6xx Family Users Guide. For design guidelines, see
Designing With MSP430F522x and MSP430F521x
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