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 MSP430F543xA and MSP430F541xA series are microcontroller configurations with three 16-bit timers, a high-performance 12-bit ADC, up to four universal serial communication interfaces (USCIs), a hardware multiplier, DMA, an RTC module with alarm capabilities, and up to 87 I/O pins.
Typical applications for this device include analog and digital sensor systems, digital motor control, remote controls, thermostats, digital timers, and hand-held meters.
Low Supply Voltage Range: 3.6 V Down to 1.8 V
Ultra-Low Power Consumption
Active Mode (AM): All System Clocks Active 230 µA/MHz at 8 MHz, 3.0 V, Flash Program Execution (Typical) 110 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: 1.7 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: 1.2 µA at 3.0 V (Typical)
Off Mode (LPM4): Full RAM Retention, Supply Supervisor Operational, Fast Wakeup: 1.2 µA at 3.0 V (Typical)
Shutdown Mode (LPM4.5): 0.1 µA at 3.0 V (Typical)
Wake up From Standby Mode in 3.5 µs (Typical)
16-Bit RISC Architecture
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