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 translation.
Typical applications include analog and digital sensor systems, data loggers, and various general-purpose applications.
Dual-Supply Voltage Device
Primary Supply (AVCC, DVCC):
Powered From External Supply: 3.6 V Down to 1.8 V
Up to 22 General-Purpose I/Os With up to Four External Interrupts
Low-Voltage Interface Supply (DVIO):
Powered From Separate External Supply: 1.62 V to 1.98 V
Up to 31 General-Purpose I/Os With up to 12 External Interrupts
Serial Communications
Ultra-Low Power Consumption
Active Mode (AM):
All System Clocks Active
290 µA/MHz at 8 MHz, 3.0 V, Flash Program Execution (Typical)
150 µA/MHz at 8 MHz, 3.0 V, RAM Program Execution (Typical)
Standby Mode (LPM3):
Real-Time Clock (RTC) With Crystal, Watchdog, and Supply Supervisor Operational, Full RAM Retention, Fast Wakeup:
1.9 µA at 2.2 V, 2.1 µA at 3.0 V (Typical)
Low-Power Oscillator (VLO), General-Purpose Counter, Watchdog, and Supply Supervisor Operational, Full RAM Retention, Fast Wakeup:
1.4 µA at 3.0 V (Typical)
Off Mode (LPM4):
Full RAM Retention, Supply Supervisor Operational, Fast Wakeup:
1.1 µA at 3.0 V (Typical)
Shutdown Mode (LPM4.5):
0.18 µA at 3.0 V (Typical)
Wake up From Standby Mode in 3.5 µs (Typical)
16-Bit RISC Architecture, Extended Memory, up to 25-MHz System Clock
Flexible Power-Management System
Fully Integrated LDO With Programmable Regulated Core Supply Voltage
Supply Voltage Supervision, Monitoring, and Brownout
